Item 1. Business
ITEM
1. BUSINESS
Overview
We are a clinical stage pharmaceutical
company developing a pipeline of prescription-based products targeting treatments for diseases with high unmet medical needs as well as
developing proprietary manufacturing technologies.
We are developing an integrated
biosynthesis-based manufacturing approach, called IntegraSyn TM , for synthesizing pharmaceutical-grade cannabinoids, for potential
use in product candidates. We are dedicated to delivering new therapeutic alternatives to patients who may benefit from cannabinoid-based
medicines. Our approach leverages on the several thousand years’ history of health benefits attributed to the Cannabis plant and
brings this anecdotal information into the 21st century by applying tried, tested and true pharmaceutical drug development discipline
and a scientific approach to establish non-plant-derived (synthetically manufactured), individual cannabinoid compounds as clinically
proven, FDA-approved medicines. While our activities do not involve direct use of Cannabis nor extracts from the plant, we note that the
U.S. Food and Drug Administration (“FDA”) has, to date, not approved any marketing application for Cannabis for the treatment
of any disease or condition and has approved only one Cannabis-derived and three Cannabis-related drug products. Our APIs, which are the
ingredients that give medicines their effects, are synthetically made and, therefore, we have no interaction with the Cannabis plant.
We do not grow nor utilize Cannabis nor its extracts in any of our products; our products are applied topically (not inhaled nor ingested);
and, we do not utilize THC or CBD, the most common cannabinoid compounds that are typically extracted from the Cannabis plant, in any
of our products. The API under development for our initial two drug candidates, INM-755 for EB and INM-088 for glaucoma, is CBN. Additional
uses of both INM-755 and INM-088 are being explored, as well as the application of additional rare cannabinoids to treat diseases.
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We believe we are positioned to develop multiple
product candidates in diseases which may benefit from medicines based on rare cannabinoid compounds. Most currently approved cannabinoid
therapies are based specifically on CBD and/or THC and are often delivered orally, which has limitations and drawbacks, such as side effects
(including the psychoactive effects of THC). Currently, we intend to deliver our rare cannabinoid pharmaceuticals through various topical
formulations (cream for dermatology, eye drops for ocular diseases) as a way of enabling treatment of the specific disease at the site
of disease while seeking to minimize systemic exposure and any related unwanted systemic side effects, including any drug-drug interactions
and any metabolism of the active pharmaceutical ingredient by the liver. THC and CBD can be obtained either from plant extraction or chemically
synthesized. We plan to access rare cannabinoids via all non-extraction approaches, including our IntegraSyn TM approach, thus
negating any interaction with or exposure to the Cannabis plant.
On June 29, 2021, we announced
that we entered into a non-binding Letter of Intent to acquire BayMedica Inc., a private company based in Nevada and
California that specializes in the manufacture and commercialization of rare cannabinoids. On September 10, 2021, we entered into a definitive
agreement to acquire BayMedica. Closing of the transaction is subject to certain standard closing conditions. See “Business – Recent Development – Definitive
Agreement to acquire BayMedica, Inc.”
Corporate Information
We were originally incorporated
in the Province of British Columbia, under the BCBCA, on May 19, 1981 with the name “Kadrey Energy Corporation”. We have undergone
a number of corporate name and business sector changes since its incorporation, ultimately changing its name to “InMed Pharmaceuticals
Inc.” on October 6, 2014 to signify our intent to specialize in cannabinoid pharmaceutical product development. Our internet address
is https://www.inmedpharma.com/.
Employees and Human Capital
Our management team is comprised
of highly experienced pharmaceutical and biotechnology executives with successful track records in researching, developing, gaining approval
for and commercializing novel medicines to treat serious diseases. Each member of our management team has over 20 to 30 years of industry
experience, including our CEO, CFO, and (Sr.) Vice Presidents of Clinical and Regulatory Affairs, of Preclinical Research and Development,
and of Chemistry, Manufacturing and Controls. Together, this team has covered the spectrum of pharmaceutical drug discovery, preclinical
research, formulation development, manufacturing, human clinical trials, regulatory submissions and approval, and global commercialization.
Additionally, the team has significant experience in company formation, capital raises, mergers/acquisitions, business development, and
sales and marketing in the pharmaceutical industry. Our Board is constituted by individuals with significant experience in the pharmaceutical
and biotechnology industries. As of June 30, 2021, including our management team, we had 12 full time employees and no part time employees.
None of our employees are represented by a collective bargaining agreement, nor have we experienced any work stoppage. We believe that
our relations with our employees are good.
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We are committed to growing our
business over the long-term. As a result of the competitive nature of the industry in which we operate, employees have significant career
mobility and as a result, the competition for experienced employees is great. The existence of this competition, and the need for talented
and experienced employees to realize our business objectives, underlies the design and implementation of our compensation programs. At
the same time, the Company seeks to keep its approach to compensation simple and streamlined to reflect the still relatively moderate
size of the Company. We have compensation, leave and benefits programs necessary to attract and retain the talented and experienced employees
necessary to develop our business including competitive salaries, stock options awards to permanent employees, both upon initial hiring
and annually thereafter, and pay annual bonuses to permanent employees based on the achievement of corporate and/or personal objectives.
We have developed an Employee Handbook that contains all corporate policies and guidelines for professional behavior. The Company policies
and practices apply to all employees, regardless of title. These guidelines include our Code of Business Conduct, policies for corporate
disclosure, insider trading and whistle blower.
In response to the COVID-19 pandemic,
commencing in March 2020, we implemented a work from home mandate and ceased all non-essential business travel. In the recent months,
some employees have transitioned back to working on-site in conjunction with the implementation of additional safety and infection prevention
measures including enhanced cleaning, additional personal protective equipment, and contact tracing protocols. We continue to provide
our employees with the option to work from home.
Rationale for Use of CBN in Pharmaceutical Drug Development
CBN is one of several rare
cannabinoids naturally produced in the Cannabis plant, albeit at significantly lower levels relative to the more commonly known
THC and CBD. Despite their common origin, different cannabinoids have been observed to have distinct physiological properties, we are
specifically exploring these unique effects of CBN, as well as other rare cannabinoids, and their therapeutic potential to treat disease.
Rare vs. Major Cannabinoids: Types, Prevalence & Application
Our extensive preclinical testing has identified
several unique properties of CBN that outperformed both THC and CBD in various disease-related assays and models. CBN can act with higher
potency when interacting with some receptor systems in the body, while acting with lower potency for others.
INM-755, our lead product
candidate, is being developed as a topical skin cream formulation containing CBN for the treatment of symptoms related to EB, a rare genetic
skin disease characterized by fragile skin that blisters easily from minimal friction that causes shearing of the skin layers. The blisters
become open wounds that do not heal well.
In addition to relief of
symptoms, inflammation, pain, and others, we believe INM-755 may impact the underlying disease by enhancing skin integrity in a subset
of EB patients. We have completed more than 30 preclinical pharmacology and toxicology studies to investigate the effects of CBN. Several
of these nonclinical studies explored the effect on important symptoms such as pain and inflammation. In in vitro pharmacology
studies, CBN demonstrated activity in reducing markers of inflammation. CBN upregulated expression of a type of keratin called keratin
15, or “K15”, which might lead to skin strengthening and reduced blister formation in EB simplex, or “EBS”, patients
with mutations in another keratin called keratin 14, or “K14”. The anti-inflammatory activity of CBN may be beneficial in
healing chronic wounds caused by prolonged inflammation. Following a review of our toxicology studies, the Netherlands National Competent
Authority and Ethics Committee approved the initiation of a Phase I clinical study in healthy volunteers. We have safety data with INM-755
cream in 22 healthy adult volunteers from our first Phase I study (755-101-HV) in which subjects had the INM-755 cream applied to their
upper backs daily for 14 days. An interim safety analysis of the first 16 subjects was reviewed by the Netherlands National Competent
Authority and Ethics Committee and determined to be adequate to allow initiation of the second Phase I study testing INM-755 cream on
small wounds. That second study has completed and we now have safety data for INM-755 cream applied to small open wounds daily for 14
days in 8 healthy adult volunteers.
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A regulatory application
to support our first Phase I clinical study in healthy volunteers with INM-755 (755-101-HV) was submitted November 4, 2019 and approved
December 6, 2019. The initial Phase I clinical study evaluated the safety, tolerability, and pharmacokinetics of INM-755 cream in healthy
volunteers with normal, intact skin; the volunteers had cream applied once daily for a period of 14 days. All subjects in this first clinical
trial completed treatment and evaluations by March 27, 2020. A regulatory application was approved April 17, 2020, for a second Phase
I clinical study of healthy volunteers to test the local safety and tolerability of applying sterile INM-755 cream to small wounds once
daily for 14 days. As with the initial Phase I trial, the second trial (755-102-HV) was conducted with two different drug concentrations
and a vehicle control. Enrollment began in early July 2020 and the clinical trial completed treatment and evaluations at the end of September
2020. The safety of INM-755 will continue to be assessed throughout its clinical development.
INM-755 cream was well tolerated
in the two Phase I clinical studies in healthy volunteers and the next step will be to study INM-755 cream in patients with EB (Study
755-201-EB). Regulatory applications to support this global trial have been filed and are under review by the National Competent Authorities
and Ethics Committees in Germany, France, Italy, Austria, Israel, Greece and Serbia, with patient enrollment expected to begin in 2H21.
CBN is also the active ingredient
in our second drug candidate, INM-088, which is in preclinical studies as a potential treatment for glaucoma. We are conducting studies
to test INM-088’s ability to provide neuroprotection and reduce intraocular pressure in the eye. We compared several cannabinoids,
including CBD and THC, to determine which cannabinoid was the best drug candidate for the treatment of glaucoma. Of all the cannabinoids
examined in preclinical studies, CBN demonstrated the most optimal neuroprotection effect. Furthermore, CBN also exhibited intraocular
pressure reduction capability. INM-088 is in advanced formulation development.
Current treatments for glaucoma
primarily focus on decreasing fluid build-up in the eye. Our data has shown that INM-088 may provide neuroprotection in addition to modulating
intraocular pressure by improving drainage of fluid in the eye. Thus far, we have conducted numerous preclinical pharmacology studies
to demonstrate these effects.
For all current and future
Product Candidates we intend to submit NDAs (or their international equivalents) in most major jurisdictions, including the U.S.
We are actively establishing
a broad patent portfolio to protect our commercial interests in utilizing CBN and other rare cannabinoids across these and other diseases.
We have also filed multiple patent applications for our integrated, biosynthesis-based manufacturing approach. If granted, these patents
may confer meaningful protection to the commercial potential for these technologies.
Our Strengths
We are the only clinical-stage
company with both multiple cannabinoid drug candidates, in multiple therapeutic categories, that also is developing an integrated biosynthesis-based
manufacturing approach, called IntegraSyn TM , to meet the needs of the rapidly evolving pharmaceutical drug needs for rare cannabinoids.
Key strengths include:
Experienced executive team and board of directors with proven track
records.
One key critical success
factor in the field of pharmaceutical drug development is the experience and skill set of the individuals leading the company. We have
been successful in attracting and retaining executive and directors with extensive (20+ years) experience in all facets of the pharmaceutical
industry, including fundamental research and development, drug formulation, clinical trial execution, regulatory approvals, pharmaceutical
commercialization, company and capital formation, business development, legal, and corporate governance. Our leadership team is well-poised
to lead use through all facets of drug development and into regulatory approval and commercialization, either internally or externally
via partnerships. It is this group of individuals that will help optimize our chances for success.
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Innovative IntegraSyn TM manufacturing approach.
IntegraSyn TM is
our integrated cannabinoid synthesis approach designed to efficiently produce bio-identical, economical, pharmaceutical-grade cannabinoids.
IntegraSyn’s TM scalable and flexible manufacturing approach integrates multiple commercially proven methods to efficiently
produce cannabinoids utilizing cost-effective processes.
Leading experts in the therapeutic potential of the rare cannabinoid
CBN.
We have invested significant
time and effort in understanding characteristics and therapeutic potential of our first rare cannabinoid drug candidate, CBN. As such,
we are positioning ourselves to be a world leader in the pharmaceutical development of this cannabinoid. We anticipate that CBN will be
the first of several such drug candidates.
Targeting medical applications of rare cannabinoids to treat diseases
with high unmet medical needs.
Significant investment in
understanding the therapeutic potential of CBN has provided us with important insight as to how best to develop this class of compounds
for treating various diseases. We intend to apply this know-how across several diseases that may benefit from cannabinoid-based medicines.
Diverse portfolio of patent applications covering a spectrum of
commercial opportunities.
Success in pharmaceutical
markets often rests with the strength of intellectual property, including patents, to protect our commercialization interests. We have
filed several patents on our novel findings and expect to continue to do so.
Our Business Strategy
Our goal is to become a global
leader in the manufacturing and clinical development of rare cannabinoids while continuing to avoid any direct interaction with the Cannabis
plant. Our strategies to accomplish this include:
Advance INM-755 and INM-088 through preclinical
and clinical development, thereby establishing important human proof-of-concept in multiple therapeutic applications.
These activities are well
underway, at various stages, for both INM-755 for diseases of the skin and INM-088 for diseases of the eye. We have the internal capabilities
to design and execute, together with multiple external vendors, the preclinical data sets and clinical studies required to advance pharmaceutical
drugs towards regulatory submission.
Establishing partnerships for our various technologies, at different
stages of development, to expedite their path towards commercialization in a resource-efficient manner.
We do not currently have
an organization for the sales, marketing and distribution of pharmaceutical products. With respect to the commercialization of each Product
Candidate, we may rely on i) a “go-it-alone” commercialization effort; ii) out-licensing to third parties; or iii) co-promotion
agreements with strategic collaborators for of our Product Candidates. To develop the appropriate commercial infrastructure internally,
we would have to invest financial and management resources, some of which would have to be deployed prior to any confirmation our products
will be approved by regulatory authorities. Any decision on a “go-it-alone” commercialization effort versus out-licensing
to third parties will depend on various factors including, but not limited to, the complexity, the expertise required and related cost
of building any such infrastructure for our Product Candidates. For INM-755 in EB, it is conceivable that we could oversee the clinical
trials, given the relatively small patient sizes expected for such trials, and build the requisite internal commercialization infrastructure
to self-market the product to EB clinics, which are limited in number and provide direct access to the vast majority of EB patients. For
INM-088 in glaucoma, because of the potentially large clinical trial patient enrollees (possibly several thousand) and the extensive sales
effort required to reach the many thousand prescribing physicians, we may consider exploring partnership opportunities early in the development
process.
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Develop a cost-efficient manufacturing source
for high quality rare cannabinoids as API for our core internal drug candidate pipeline, for licensing opportunities of non-core drug
candidates, as well as a potential source for cannabinoids in the non-pharmaceutical space.
Extraction of rare cannabinoids
from the plant is economically impractical for commercial applications. Modern approaches to product manufacturing, including chemical
synthesis and biosynthesis, may be appropriate in individual situations depending on the targeted cannabinoid, the quantity that is desired
as well as the requisite quality specification for the intended market segment (consumer vs. pharmaceuticals). We are developing an integrative
cannabinoid synthesis approach designed to produce bio-identical, economical, pharmaceutical-grade cannabinoids in a cost-efficient manner,
called IntegraSyn TM , that may bring incremental benefits over the traditional chemical synthesis and biosynthesis approaches.
The cannabinoids that will be produced from IntegraSyn TM are targeted to be bio-identical to the naturally occurring cannabinoids.
Our manufacturing approach is designed to offer superior yield, control, consistency and quality of rare cannabinoids when compared to
alternative methods. IntegraSyn TM may address the increasing pharmaceutical and other commercial demands for competitively-price
cannabinoids while providing access to rare cannabinoids that are otherwise impractical to extract from the plant.
Continue to explore the potential of a wide
array of rare cannabinoids and their analogs/variants to treat diseases based on our significant history in cannabinoid research and lead
drug candidate identification.
Individual cannabinoids affect
a range of different receptors in the human body, including, but not limited to, known endocannabinoid receptors. As such, they are responsible
for a wide variety of pharmacological effects. However, due to the limited research into these varying effects, a full understanding of
the role of each cannabinoid compound remains elusive. As a company, we have been formally investigating the utility of cannabinoids in
treating disease for over 5 years.
We have numerous options
for commercializing our various technologies. At the core of our activities, we are a drug development company focused on commercializing
important cannabinoid-based medicines to treat diseases with high unmet medical needs.
Cannabinoid Science Overview
Cannabinoids are a class
of compounds that exist throughout nature and can be found in significant numbers and varying quantities in the Cannabis plant.
The two predominant, or major, cannabinoids in the Cannabis plant are THC and CBD. These two exist in relatively large quantities
in the plant and can be easily extracted, which has led to significant research into these two compounds over the previous several decades.
Nevertheless, there are over 100 additional cannabinoid compounds found in the plant, referred to as minor or rare cannabinoids. Each
cannabinoid has one or more specific chemical differences that may confer unique physiological properties in humans.
Cannabinoid receptors are
found throughout the body and are involved in many different functions, such as pain perception, memory, immune function and sleep. Cannabinoids
act as messengers that bind to cannabinoid receptors, as well as other receptors, signaling the endocannabinoid system into action. The
relevance of the endocannabinoid system on many important physiological processes has made cannabinoids an important target to potentially
treat a number of diseases and symptoms.
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Two cannabinoid receptors
in the human body are the endocannabinoid receptor 1 (CB1), which is more significant to the central nervous system, and endocannabinoid
receptor 2 (CB2), which is more common with the immune system. Scientific literature suggests that CBN has a greater effect on the immune
system than on the central nervous system; however, information on the effects of CBN on the endocannabinoid system is limited. We continue
to research the effects of CBN and how it interacts and modulates receptors in the body.
Significant investigation
is currently underway to determine the role of cannabinoids in affecting other receptor systems in the human body. Extensive preclinical
testing undertaken by us has identified several unique properties of CBN that outperformed both THC and CBD in various disease-related
assays and models. CBN can act with higher potency when interacting with some receptor systems in the body, while acting with lower potency
for others.
Physical and Chemical Properties of Active Pharmaceutical Ingredient
CBN
CBN is a stable, highly lipophilic cannabinoid compound. It
is insoluble in water, but soluble in organic solvents.
International Non-proprietary Name:
Cannabinol (abbreviated CBN)
International Union of Pure and Applied Chemistry Name:
6,6,9-trimethyl-3-pentyl-benzo[c]chromen-1-ol
Chemical Abstracts Service Registration Number:
521-35-7
United States Adopted Name:
Cannabinol
The molecular formula is C21H26O2 and the molecular weight
is 310.43 g/mol. CBN has no chiral centers.
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Figure 1 Structural Formula of CBN
CBN occurs naturally as a trace component of Cannabis ,
or as a degradation product of D9-THC. However, our product candidates utilizing CBN contain highly purified synthetic CBN, rather than
a biological extract.
CBN as our Lead API
As the API in our lead therapeutic programs in dermatology
(INM-755) and ocular disease (INM-088), CBN has demonstrated several compelling features, including:
● A rare cannabinoid with unique physiological properties;
● A natural compound, but designated as a new chemical entity,
or “NCE” for pharmaceutical development;
● Found in trace amounts in the plant and impractical to extract;
and
● Our preclinical studies show therapeutic potential for dermatology
and ocular diseases.
We believe that we offer
a differentiated approach to selecting and delivering rare cannabinoids vis-à-vis other current competitors, many of whom are exclusively
focused on THC and/or CBD as their therapeutic agents. We believe that rare cannabinoids in general, and CBN in particular, represent
significant opportunities to treat a wide spectrum of diseases with high unmet medical need. In our preclinical testing, CBN has demonstrated
therapeutic potential beyond CBD for several symptoms and disease-modifying effects for dermatological conditions and has demonstrated
benefits beyond CBD and THC for ocular diseases. We believe that a topical application of CBN is targeted to maximize the clinical benefit
at the disease site (skin, eye) while minimizing the systemic exposure and any corresponding adverse effects.
Additionally, our IntegraSyn TM
manufacturing approach may help unlock access to rare cannabinoids for further pharmaceutical development as a source of cost-efficient,
high purity API.
Our Product Candidates and Technologies
Development of a Biosynthesis-based Process for the Manufacturing
of Cannabinoids
Introduction:
While there are over 100
different individual cannabinoids in the Cannabis plant, the two most well-known and studied compounds are also the two that occur
in the largest quantities: THC and CBD. Due to their relative abundance in the Cannabis plant, it is also only THC and CBD that
can currently be extracted economically. Among other challenges, the expense of extraction – or that of synthetic manufacturing
– of the remaining minor or rare cannabinoids, may be orders of magnitude greater than that of THC and CBD.
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Nevertheless, like the major
cannabinoids THC and CBD, these rare cannabinoids may hold very important physiological benefits in humans. The challenge, and opportunity,
that we have identified, and seek to solve, is engineering an integrated manufacturing approach, specifically for the production of pharmaceutical-grade
cannabinoids – with an immediate focus on the rare cannabinoids – which is pure, cost-efficient, and consistently yields bio-identical
cannabinoids as compared to the compounds found in nature, among several other benefits. We believe that providing this solution would
be a critical success factor not only for our drug development strategy, but also for other biotechnology and pharmaceutical companies
as well.
In 2015, we commenced the
development of a biosynthesis process for the manufacturing of cannabinoids through a research collaboration with Dr. Vikramaditya Yadav
from the Department of Biological and Chemical Engineering at the University of British Columbia. Utilizing the basis of a specific vector
created for us, Dr. Yadav initiated a Research and Development Project titled “The Metabolic Engineering of yeast and bacteria for
synthesis of cannabinoids and Cannabis -derived terpenoids” under a collaborative research agreement. Subsequently, we signed
a Technology Assignment Agreement with the University of British Columbia whereby we retain sole worldwide rights to all patents emergent
from the technology under development in exchange for a royalty of less than 1% on sales revenues from products utilizing cannabinoids
manufactured using the technology and a single digit royalty on any sub-licensing revenues. Total commitments under research agreements
associated with this collaboration totaled C$418,044 of which all have been paid.
Microorganisms
do not naturally produce cannabinoids nor the enzymes required for their assembly. However, utilizing genome engineering to modify
their metabolism, we have systematically introduced different aspects of the Cannabis plant’s metabolic pathways into a
bacteria ( E. coli ), referred to as a host, and have reported what we believe to be the first-of-its-kind production of fully
differentiated cannabinoids in this bacteria. This research served as the basis for the subsequent development of a new, integrated
approach to cannabinoid manufacturing that we refer to as IntegraSyn TM . IntegraSyn TM is a flexible,
integrative cannabinoid synthesis approach utilizing novel enzyme(s) to efficiently produce bio-identical, economical,
pharmaceutical-grade cannabinoids without the risk and high-resource requirements of an agriculture growing operation.
In early research, we utilized
the specific gene sequences from the Cannabis plant that encode the instructions to make specific enzymes that enable cannabinoid
synthesis and subsequently transferred these genes into E. coli . This intervention converts the bacterium into a manufacturing
system that produces substantial quantities of the target cannabinoids. This technology may provide an opportunity for industrial-scale
manufacturing of cannabinoids, which we believe would be a significant improvement over existing manufacturing platforms such as direct
extraction from Cannabis plants or chemical synthesis. Specifically, direct extraction is quite cumbersome, time-consuming and
relatively low yielding for all but a few of the cannabinoid compounds. In contrast, the use of microorganisms for manufacturing cannabinoids
eliminates the need for an agricultural-centric process, including planting, growing, harvesting and extraction. There are also economic
and environmental advantages including substantially reduced resource requirements ( e.g. , water, electricity, manpower, etc.).
Furthermore, the agricultural approach has several hard-to-remove impurities ( e.g. , pesticides, etc.), potentially presenting safety
issues. As with all crops, yield fluctuations influenced by the environment present an additional risk. Only a few of the 100+ cannabinoids
can currently be extracted from the plant in sufficient quantities to make the process economically viable. For certain cannabinoids,
chemical synthesis, by comparison, can be challenging and expensive due to the complexity of these molecules. For these reasons, we believe
that a modified biosynthetic approach may be superior to both of these alternatives for cannabinoid production.
Cannabinoids are prenylated
polyketides that are derived from fatty acid and terpenoid precursors. The biosynthesis of these molecules involves four metabolic pathways,
two of which originate from central carbon metabolism. The first pathway (the Terpenoid pathway referenced in Figure 1 below) culminates
with the synthesis of geranyl pyrophosphate, or “GPP”, and neryl pyrophosphate, or “NPP”. These molecules are
terpenoid building blocks, or precursors. The second cannabinoid biosynthetic pathway, or the Polyketide pathway, is a truncated version
of a polyketide biosynthetic pathway and results in the second requisite precursor, either: olivetolic acid, or “OA”, and/or
divarinic acid, or “DVA”. The polyketide precursors subsequently combine with the terpenoid precursors in the third pathway,
which comprises a single, specialized enzyme in the plant, to yield the ‘gateway’ cannabinoids, the cannabinoids that act
as precursor molecules for further differentiation into all of the others. For instance, OA combines with GPP to yield the gateway cannabinoid
cannabigerolic acid, or “CBGA”. The gateway cannabinoids are subsequently modified in the fourth pathway to yield cannabinoids
such as tetrahydrocannabinolic acid and cannabidiolic acid. We refer to the fourth pathway as the down-stream pathway involving the transformation
of the acid form of the cannabinoids into the non-acid form via enzymes called synthases. Synthesis of CBGA is the most dominant pathway
in the plant, resulting in high quantities of the down-stream cannabinoids THC and CBD. Other combinations of the various precursors result
in different gateway cannabinoids which, in turn, leads to diversification into the 100+ cannabinoids.
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Figure 1:
© InMed Pharmaceuticals, Inc. and University of British
Columbia. All rights reserved.
Figure 1: Synthesis of the
gateway cannabinoid CBGA is the most prevalent pathway in the Cannabis plant, leading to high levels of both THC and CBD. Our technology,
IntegraSynTM, is designed to mimic the natural biosynthesis of cannabinoids starting with an E. coli biofermentation process combined
with additional common pharmaceutical manufacturing technologies.
Initially, we explored the
use of several potential hosts for cannabinoid biosynthesis, including the bacterium E. coli and the yeast S. cerevisiae.
Our preliminary investigations identified E. coli as a superior host for production of the primary gateway cannabinoid, CBGA.
Our earlier research led
to the successful construction of the terpenoid biosynthetic pathway and the gateway pathway for synthesis of CBGA and the down-stream
diversification pathways for synthesis of other cannabinoids. We have confirmed the biosynthesis of the cannabinoids using qualified High-Performance
Liquid Chromatography methodologies and Proton Nuclear Magnetic Resonance, or “H-NMR”, instrumentation.
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Our goal for the biosynthesis
program has always been to achieve the simplest, most efficient, scalable, flexible and economical solution with the least steps and fastest
production cycle, to make bio-identical cannabinoids to those found in nature. While developing our bacterial biosynthesis system over
the past five years, we further optimized the fermentation conditions and the purification processes. However, we identified several limitations
associated with the traditional biosynthesis process. Working with our CDMOs, we have continued development and optimization of our manufacturing
processes that led to the development of IntegraSyn TM .
IntegraSyn TM is
designed to potentially overcome the limitations of traditional cannabinoid production approaches. Extraction from the plant of rare cannabinoids
can be prohibitively expensive due to the limited quantity of these chemicals in the plant; is a resource intensive process with a large
carbon footprint; requires extended, agricultural-related cycle times; and, may face certain quality and consistency issues related to
pesticide removal, which may also face import/export restrictions. Chemical synthesis is a standard pharmaceutical manufacturing process
but may be limited in its ability to manufacture bio-identical cannabinoids, depending on the complexity of the target cannabinoid; removal
of non-bio-identical isomers from the final product may result in significant loss of yield; and, chemical synthesis may prove to be complicated
and costly to scale-up due to purification techniques involved. Traditional biosynthesis as a standalone process may be limited in its
final product yield due to the bioburden/stress placed on the microbe due to the complexity of the final products; there may be separation
and purification challenges when isolating the cannabinoid from the mixture; and, the process costs and complexity may increase with each
differentiated cannabinoid.
IntegraSyn TM integrates
various pharmaceutical manufacturing processes to maximize yield and minimize the cost of cannabinoid synthesis. We utilize proprietary,
high efficiency enzymes produced via the E. coli biofermentation portion of the IntegraSyn TM approach for the production
of a cannabinoid. Our enzymes are used in combination with cost-effective yet sophisticated substrates (or starting materials) to produce
a cannabinoid in bulk via a biotransformation process, which is then further processed with downstream purification steps including separation,
purification and drying. This cannabinoid can be inventoried in bulk and used either as a finished API cannabinoid product or as a starting
material for other cannabinoids. This further differentiation can utilize any one of several well-established manufacturing approaches
– including enzymatic biotransformation and traditional chemical synthesis – to optimize yield, time and cost.
IntegraSyn TM makes
cost-efficient use of sophisticated starting materials, requires fewer costly steps from precursor substrates all the way through to end-product,
and is designed as a high-yield manufacturing process. Furthermore, this manufacturing method is flexible in shifting production from
one cannabinoid to another under GMP conditions. Our initial data demonstrated a substantial increase in cannabinoid production yield
per fermentation batch compared to our traditional biosynthesis method. The final cost of goods for individual cannabinoids is driven
by several factors including, among others: efficiency of the enzyme(s) used; number of manufacturing steps; type of manufacturing equipment
/ processes used; and, final yield of the entire manufacturing process.
Targeted Benefits of IntegraSyn TM :
A. Improved yields beyond traditional biosynthesis or other standard
chemical manufacturing methods for various cannabinoids
B. Cost-efficient due to minimization of expensive manufacturing
steps and cost-effective use of sophisticated raw materials
C. Flexible, modular approach, able to shift from production
of one cannabinoid to another
D. Accessibility to rare cannabinoids which are otherwise impractical/expensive
to extract from the plant
E. Scalable to meet market demand of cannabinoids for pharmaceutical
products or other purposes
F. Sustainable approach with less environmental impact than plant-grow-harvest-extract-purify
methods
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Next steps in the further development of IntegraSyn TM ,
all of which are currently ongoing, include:
● Continue to optimize and scale-up the IntegraSyn TM
process to larger vessels, whereby protocols will be developed to optimize the manufacturing parameters associated with the entire process
with the Almac Group (UK) ;
● Conduct analytical assays to support batch production;
● Scale-up process to be GMP ready;
● Continue efforts to optimize pathways to further diversify
the number of cannabinoids produced using our technology; and
● Identify potential partnership opportunities.
We currently view our options
for achieving GMP production capabilities as three-fold: (a) building our own dedicated biosynthesis facility; (b) accessing existing
manufacturing capacity via leases with third parties; or (c) licensing our process/know-how to a CDMO with existing infrastructure to
produce the requisite preclinical, clinical and commercial-scale supply of our Product Candidates.
Other Applications of our IntegraSyn TM Approach:
While
the main objective in developing our IntegraSyn TM approach remains to innovate an integrative, efficient and
cost-effective method for the production of cannabinoids for use in our pharmaceutical Product Candidates, we remain optimistic that
there may exist additional business opportunities for us to monetize this technology, including but not limited to supplying
cannabinoid drugs to the broader pharmaceutical industry. We continue to consider this, and other opportunities, in order to
optimize value for our company. Success in this strategy will be largely dependent on the ability of
IntegraSyn TM -produced cannabinoid products to be price competitive with other technologies.
Competitive Conditions:
Other methods of synthetic cannabinoid manufacturing that
are currently being investigated by several entities include:
● Biosynthesis (generation of the final compound inside a single
system) using yeast, non- E. coli bacteria, or other approaches (algae, etc.) as a host organism;
● Synthetic chemistry; and
● Combinations of these above-listed technologies.
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Several companies (see chart below) are active
in the cannabinoid manufacturing space including BayMedica, BioVectra, CB Therapeutics, Cellibre, Cronos, Ginko Bioworks, Hyasynth, Intrexon,
KinetoChem, Librede, and Purisys, among several others.
Key Milestones:
On May 21, 2015, we commenced
the development of our biosynthesis process for the manufacturing of cannabinoids through a research collaboration with Dr. Vikramaditya
Yadav from the Department of Biological and Chemical Engineering at the University of British Columbia under a project titled “The
Metabolic Engineering of yeast and bacteria for synthesis of cannabinoids and Cannabis derived terpenoids”. On May 31, 2017,
we signed a Technology Assignment Agreement with the University of British Columbia whereby we retain sole worldwide rights to all patents
emergent from the technology under development in exchange for a royalty of less than 1% on sales revenues from products utilizing cannabinoids
manufactured using the technology and a single digit royalty on sub-licensing revenues. Royalties are payable, on a country-by-country
basis, until such time as there is no longer a patent pending, unexpired patent or issued patent derived from the transfer technology,
in any country. On May 15, 2018, we extended our Collaborative Research Agreement, which may be terminated by either party upon 30 calendar
days written notice, with the University of British Columbia for an additional three years.
We, in conjunction with our
collaboration partners at the University of British Columbia, continue to advance the production platform for the biofermentation of cannabinoids.
Optimization of the vector continued in parallel with the identification of optimal fermentation conditions and down-stream purification
processes with third party contract manufacturing organizations. Optimization of the fermentation conditions was a project conducted with
the National Research Council Canada at their dedicated fermentation facility in Montreal, Quebec. While we do not anticipate any new
intellectual property arising from this venture, under the terms of this research agreement, the National Research Council of Canada owns
all new IP and we have a sole, fully-paid-up license to all commercialization rights of such IP. This project was initiated in October
2018 and concluded in the second half of 2019.
In
February 2019, we entered into a separate process development collaboration by way of a Master Service Agreement with the Almac
Group (UK), or “Almac”, a seasoned GMP pharmaceutical contract development and manufacturing organization. Almac was
initially tasked to develop a down-stream purification process to support the fermentation optimization activities at the National
Research Council of Canada. In addition, we also engaged Almac to assist in the development of an “alternative”
manufacturing process for cannabinoids which integrates the best available technologies across the spectrum of pharmaceutical drug
production. This process is now referred to as IntegraSyn TM . We retain all rights to this new process while Almac retains
certain rights-of-first refusal on the production and supply of certain precursors, or starting materials, for this alternative
process.
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Other Milestones Include:
● September 12, 2017 – We announced the filing of a provisional
patent application entitled, “Metabolic Engineering of E. coli for the Biosynthesis of Cannabinoid Products” (#62/554,494)
pertaining to our biosynthesis program for the manufacture of cannabinoids that are identical to those found in nature. We expect that
this patent application, since converted into an application pursuant to the Patent Cooperation Treaty, or a “PCT Application”,
and pursued in key jurisdictions throughout the world, will provide significant commercial protection for our E. coli -based expression
system to manufacture any of the 100+ cannabinoid compounds that may have a medical impact on important human diseases. This is the first
in a series of patent applications directed to various aspects of our biosynthesis program. See “Intellectual Property”
● September 19, 2017 – We announced retaining the consulting
services of Ben Paterson, P.E., to assist in defining the pathway for the scale-up, purification, and manufacturing strategies for our
cannabinoid biosynthesis program. Mr. Paterson has nearly four decades of experience in developing pharmaceutical manufacturing and purification
processes. He was previously a Senior Engineering Advisor with Eli Lilly and Company, where he spent 37 years, including 24 years in
their biosynthesis division. His expertise includes first defining processes in the lab, then scaling up to pilot and commercial scale.
Mr. Paterson has conducted design, construction, operation, optimization, and troubleshooting of both large and small molecule drug facilities
including the E. coli biosynthesis of numerous products. He brings experience in the seamless integration of biochemistry, equipment,
and process control to successfully define a process at scale.
● September 25, 2017 – We announced an update on the significant
advancements in our technology for the microbial biosynthesis of cannabinoids. We have successfully demonstrated an ability to selectively
produce various gateway cannabinoids using genetically engineered microorganisms. These molecules can be functionalized further to produce
any of the 100+ down-stream cannabinoids, or those formed from an enzymatic reaction with the gateway cannabinoid CBGA, found naturally
in the Cannabis plant. We are actively employing this production chassis to synthesize compounds for certain pharmaceutical research
programs. Our biosynthesis program has resulted in what we believe to be two significant firsts:
o new metabolic pathway for manufacturing the terpenoid family
of cannabinoid precursors that is much more robust than other microbial expression systems tested by us; and
o first-ever production of any fully assembled down-stream
cannabinoids in E. coli , beginning with genetic material to produce precursors, enzymes, and synthases.
● September 10, 2018 – We announced the filing of a PCT
Application for biosynthesis which claims a priority date from September 5, 2017 (PCT/CA2018/051074). The PCT Application filing is a
conversion from the provisional patent filed in September 2017.
● September 11, 2018 – We announced that the University
of British Columbia, laboratories of Professor V. Yadav, was awarded a NSERC grant totaling C$136,000 over a three-year period to support
its collaborative research and development project with us entitled “Microbial metabolic engineering for cannabinoid biosynthesis”.
● October 3, 2018 – We announced entering into a research
agreement with the National Research Council of Canada in Montreal, Canada, for biofermentation process development and bioreactor scale-up
optimization for cannabinoid biosynthesis in E. coli . at the National Research Council of Canada’s dedicated biosynthesis
site in Montreal. This project includes the technology transfer of the up-stream fermentation conditions and HPLC assay from UBC to the
National Research Council facilities in Montreal.
● December 4, 2018 – We announced that we signed a contribution
agreement with the National Research Council Canada Industrial Research Assistance Program, or National Research Council of Canada IRAP,
to receive funding of up to C$500,000 to support our ongoing research and development efforts in cannabinoid biosynthesis. National Research
Council of Canada IRAP provides advisory services and funding to Canadian businesses to promote accelerated growth and technology innovation.
In particular, funding from National Research Council of Canada IRAP will be applied to improve production of the different components
of the terpenoid biosynthetic pathway, a pre-cursor of cannabinoid production, as well as research and development supporting up-stream
and down-stream scale-up activities conducted by our contract development and manufacture organizations. The funding will be received
over the next 18 months. We also continue our efforts to further diversify the number of cannabinoids produced using our technology platform.
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● March 18, 2019 – We announced the publication of the
first in a series of pending patent applications directed to our biosynthesis platform technology for the manufacturing of pharmaceutical-grade
cannabinoids. International Patent Application International Patent Application No. PCT/CA2018/051074, which published as WO2019046941,
entitled “METABOLIC ENGINEERING OF E. COLI FOR THE BIOSYNTHESIS OF CANNABINOID PRODUCTS”, addresses the enablement
and maximization of cannabinoid production through optimization of the precursor substrates needed to support specific cannabinoid synthesis.
This application, as well as two more recently filed U.S. provisional patent applications, covers various elements required to enable
functional cannabinoid synthase production in an E. coli system. We will actively seek to convert these two follow-on provisional
applications, and subsequent provisional patents from new patent families, into additional PCT Applications in all major commercial jurisdictions,
in due course. See “Intellectual Property”
● May 5, 2020 – We announced our working relationship
with the Almac Group (UK) (“Almac”) on an integrated approach to augment current biosynthesis-based methods for cannabinoid
production, which began in 2019. The companies have been engaged in developing a streamlined cannabinoid manufacturing process, specifically
optimizing the upstream cannabinoid assembly processes as well as downstream purification processes, to achieve cost-efficient, GMP-grade
active pharmaceutical ingredients for prescription-based cannabinoid medications. Almac is an international, privately-owned organization
which has grown organically over the past five decades now employing over 5,600 highly skilled personnel across 18 facilities including
Europe, the US and Asia.
● May 19, 2020 – We announced the filing of a key Patent
Cooperation Treaty (“PCT”) patent application directed to our biosynthesis platform technology for the manufacturing of pharmaceutical-grade
cannabinoids. The PCT patent application entitled “Compositions and Methods for Biosynthesis of Terpenoids or Cannabinoids in a
Heterologous System”. This application” was initially filed as two separate United States Provisional Patent applications
and further addresses the enablement and maximization of cannabinoid production through optimization of the precursor substrates needed
to support specific cannabinoid synthesis.
● June 24, 2020 – We introduced details of IntegraSyn TM ,
a new approach to producing pharmaceutical-grade cannabinoids. IntegraSyn TM is a manufacturing approach that integrates biosynthesis
with other traditional drug manufacturing methods with the goal of improving production of low-cost, high quality cannabinoids. The goals
of IntegraSyn TM are to increase yields beyond traditional biosynthesis or other standard cannabinoid manufacturing methods;
reduce costs by minimizing the number of expensive manufacturing steps and use of cost-efficient starting materials; provide manufacturing
flexibility in transitioning from one cannabinoid to another; provide access to rare cannabinoids that are otherwise impractical / expensive
to extract from the plant; be scalable to meet market demand of cannabinoids for pharmaceutical products or other purposes; and use a
sustainable approach with less environmental impact than the plant-grow-harvest-extract-purify methods.
● September 22, 2020 – We announced the filing of a PCT
patent application as part of a growing portfolio of intellectual property related to the IntegraSyn™ manufacturing approach for
producing low-cost, pharmaceutical-grade cannabinoids.
● November 18, 2020 – We announced we had entered into
a broad reciprocal research collaboration with BayMedica Inc. to explore synergies between technologies owned by the two companies. Under
the terms of the Collaborative Research Agreement, BayMedica is being provided access to specific elements of our proprietary IntegraSyn TM
platform for the production of cannabinoids. We will undertake preclinical investigation of numerous therapeutic compounds selected
from BayMedica’s extensive library of proprietary cannabinoid analogs.
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● April 26, 2021 - We announced that the IntegraSyn™ cannabinoid
manufacturing approach has achieved a level of 2g/L cannabinoid yield, a milestone that signals commercial viability and supports advancement
to large-scale production in the coming months. Having achieved a 2g/L yield level, we will now focus on manufacturing scale-up to larger
batch sizes while continuing process and enzyme optimization, targeting increased cannabinoid yield and further reducing the overall
cost of goods. In parallel, we continue to prepare the manufacturing process to be Good Manufacturing Practice (GMP)-ready for pharmaceutical
quality production. The next stage of large-scale production is to produce a batch with a target output of one kilogram of the selected
cannabinoid in the second half of calendar 2021 via a GMP-ready process.
● June 17, 2021 - We announced that we increased cannabinoid
yield to 5 g/L with IntegraSyn™ in advance of commercial-scale production, a milestone that significantly reduces the overall cost
of rare cannabinoid manufacturing.
● June 29, 2021 - We announced that we entered into a non-binding
Letter of Intent (“LOI”) to acquire BayMedica Inc., a private company based in Nevada and California that specializes in
the manufacture and commercialization of rare cannabinoids. BayMedica is a revenue-stage biotechnology company leveraging its significant
expertise in synthetic biology and pharmaceutical chemistry to develop efficient, scalable, and proprietary manufacturing approaches
to produce high quality, regulatory-compliant rare cannabinoids for consumer applications. BayMedica is currently commercializing the
rare cannabinoid CBC (cannabichromene) as a B2B supplier to distributors and manufacturers marketing products in the health and wellness
sector. In addition to their manufacturing and commercial activities in the health and wellness arena, BayMedica is also researching
cannabinoid analogs as potential drug candidates for pharmaceutical purposes. On September 10, 2021, we entered into a definitive agreement to acquire BayMedica. Closing of the transaction is
subject to certain standard closing conditions. See “Business – Recent Development – Definitive
Agreement to acquire BayMedica, Inc. ”
Research and Development Pipeline of Therapeutic Drug Candidates
INM-755 for the Treatment of EB
Introduction
INM-755 (CBN) cream is being
developed as a proprietary, topical, single-cannabinoid product candidate intended as a therapy in dermatological diseases. The first
clinical indication under development is EB. EB is a collective name for a group of genetic disorders of connective tissues characterized
by skin fragility leading to extensive blistering and wounding. It affects skin and mucous membranes, particularly of the gastrointestinal
tract, genitourinary and respiratory systems. EB is a debilitating disease affecting a small proportion of people in the United States,
thus earning it an orphan-disease status. The disease has no definitive cure and all current treatments are directed towards symptom relief.
There are, however, a number of products, mainly gene therapies, currently in clinical trials, in which a cure is being explored, according
to several recent scientific publications. Our preclinical research has identified a specific cannabinoid, CBN, that may prove beneficial
to patients: first, by addressing certain key disease hallmarks (which may include wound healing, infection, pain, inflammation); and
second, by regulating the expression of various proteins (keratins) that may compensate for reduced expression of others.
The active ingredient in
INM-755, CBN, is an agonist for both cannabinoid (CB) 1 and CB2 receptors, with a higher affinity for CB2, which means it should have
a greater effect on the immune system than on the central nervous system. The distribution of CB1 and CB2 receptors in sensory nerves
and inflammatory cells in the skin make it an attractive pharmaceutical agent for dermal treatments in medical conditions characterized
by inflammation and pain.
In preclinical pharmacology
studies, CBN demonstrated activity as an anti-inflammatory and antinociceptive agent. CBN upregulated expression of keratin 15 (K15),
which might lead to skin strengthening and reduced blister formation in EBS patients with keratin 14 (K14) mutations. At the cream concentrations
chosen for clinical development, it does not appear to impede wound healing of partial-thickness wounds. Its anti-inflammatory activity
may be beneficial in healing chronic wounds caused by prolonged inflammation.
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We have completed 20 safety
pharmacology and toxicology studies to investigate the effects of CBN. We have also completed three Phase 1 safety and tolerability studies
in healthy volunteers, two studies of which were conducted with varying concentrations of INM-755 cream and one study of which examined
the non-CBN components of the cream base for INM-755.
The Science Behind EB
At the most basic level,
the hallmark of EB is poor anchorage of the epidermis to the dermis such that the skin and mucous membranes of the affected individuals
tend to shear and blister on minimal friction. This is due to the genetically inherited defect in certain genes (multiple genes have been
shown to be associated with the different subtypes of EB) that code for some specific proteins that are concerned with maintaining the
integrity of skin and mucous membranes.
There are four main subtypes
of the condition. Each of these subtypes can display a spectrum of phenotypic severity reflecting the types of mutations in different
genes, together with modifying environmental factors. The types of mutations also determine the mode of inheritance, either autosomal
dominant or autosomal recessive. The following table shows the pattern of inheritance and the defective genes and proteins in each:
Classification of EB Types
(a) EBS
This is the most common form
of EB and is characterized by a lack of adhesion of the skin directly above the basement membrane (the basal layer). An estimated 55%
of people with EB have EBS resulting from a genetic defect of the keratins K5 and K14, with the incidence between the two defects estimated
to be essentially equal. The most common form of EBS manifests itself as blistering confined to the hands and feet while in others blistering
can occur all over the body. Blistering generally appears during the neonatal period but it can also manifest itself in later childhood
(or even in adult life). Painful skin blisters are accentuated by friction, especially on the feet where footwear causes increased irritation.
Friction injuries tend to occur more commonly in warm weather and secondary infections are common.
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(b) Junctional EB
Junctional EB is characterized
by a lack of adhesion of the skin through the basement membrane and affects some 5% of those with EB. The generalized type of junctional
disease (about half of cases of junctional EB) is usually fatal in infancy. This is often as a result of anemia and malnutrition due to
poor feeding caused by the serious blistering in the pharynx and esophagus. The milder form of the disease can cause life-long pain and
disability.
(c) Dystrophic EB, or “DEB”
DEB is characterized by a
lack of adhesion of the skin under the basement membrane. Approximately 30% of people with EB have DEB. Patients with DEB tend to develop
blisters that heal with fibrosis, leading to joint contracture, fusion of the fingers, contractures of the mouth membranes and narrowing
of the esophagus. Often the dominant inherited type of DEB is the least severe type and the patient can lead an almost normal life. However,
the severity of the condition does increase with age due to scarring, syndactyly and generalized skin atrophy. Those with recessive DEB
have a high chance of developing a squamous cell carcinoma, often before the age of 35.
(d) Kindler Syndrome
This type of EB is rare and
usually becomes apparent at birth or soon after. This condition is called mixed type because blisters appear across the skin layers. The
condition usually improves with time and can disappear. It is the only type that causes patchy discoloring (mottling) of skin exposed
to the sun. Kindler syndrome is recessive.
(e) Epidermolysis bullosa acquisita
Epidermolysis bullosa acquisita
is a rare type that is not inherited. The blisters result from the immune system attacking healthy tissue by mistake. It’s similar
to another immune system disorder called bullous pemphigoid. It tends to cause blisters on the hands, feet and mucous membranes.
Epidemiology, Morbidity and Mortality
The most reliable figures
on prevalence and incidence of EB are derived from the National EB Registry, or “NEBR”, which collected cross-sectional and
longitudinal data on about 3,300 EB patients in the United States from 1986 through 2002. The prevalence of EB was estimated to be approximately
11 per million and the incidence approximately 20 per million live births. In the United States, assuming that mild cases of EBS are reported
only 10% of the time, the affected population in the United States is approximately 12,500. Other sources cite populations of up to 25,000
in the United States.
Generalized blistering caused
by any subtype may be complicated by infection, sepsis, and death especially in infancy. Severe forms of EB increase the mortality risk
during infancy. In patients with EB that survive childhood, the most common cause of death is metastatic squamous cell carcinoma. This
skin cancer occurs most frequently in patients with recessively inherited DEB who are aged 15-35 years. In contrast, dominantly inherited
EBS and DEB and milder forms of junctional EB may not affect a patient’s life expectancy adversely. Onset of EB is at birth or shortly
after. The exception occurs in mild cases of EBS, which may remain undetected until adulthood or remain undiagnosed. The disease appears
to have equal incidences in both sexes.
Current Treatments
As a genetic disease, EB
has no cure and, as a designated orphan-disease, there are no approved products specifically to treat this indication. Effective management
of EB patients involves a collaborative approach between several specialists, including surgeons, dermatologists, ophthalmologists, dentists,
psychologists, podiatrists, physiotherapists and geneticists. The aim is to provide support to the patient by alleviating symptoms and
managing complications; in particular, the patient caregivers must assess and act daily to treat the wound and enable wound healing, address
the current level of pain and itch, provide adequate antimicrobial protection, reduce inflammation (as a source of depressed wound healing
abilities) and address the emotional state of the patient.
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Current medications are employed
in control of pain (various types of analgesics including nonsteroidal anti-inflammatory drugs, or “NSAIDS”, tricyclic antidepressants,
gabapentin, and narcotics) and pruritus (antihistamines, etc.) and to address complications such as local infection and septicemia (local
and systemic antibiotics). Steroids and phenytoin are also used in managing dysphagia-associated pain. Tetracycline is considered to be
beneficial in improving the blistering and epithelial disadhesion. The complications of these classes of medications are well known and
the drugs are most likely to further complicate the patients’ conditions since they will be used on long-term basis.
The newer products currently
in research also have their problems. For example, the use of bone marrow was being researched by the University of Minnesota with some
promising results. However, the severe immunosuppression that bone marrow transplantation requires causes a significant risk of serious
infections in patients with large scale blisters and skin erosions.
Competitive Landscape
We are studying INM-755,
our proprietary, topical, single cannabinoid product candidate, as a first-line therapy in all EB patients for symptom relief and in EBS
as a therapy to potentially strengthen skin integrity via up-regulation of a keratin.
There are no therapies approved
specifically for the treatment of EB. This lack of treatment options creates a significant unmet medical need in this devastating condition.
For those products currently envisioned or in clinical trials as topical treatments, wound healing and symptom relief are the primary
endpoints.
According to public information,
several topical investigational drug formulations are currently at various stages of clinical development for the treatment of EB, including:
● Amryt Pharma’s investigational drug, Oleogel-S10, is
a topical product incorporating a betulin-based active ingredient formulated with sunflower oil. AP101 causes the keratinocytes to migrate
faster and to differentiate into mature epithelial skin cells. This product is currently approved in some jurisdictions for the treatment
of partial-thickness wounds in adults.
● Krystal Biotech’s investigational drug, KB103, is a
replication-defective, non-integrating HSV-1 that is based on a viral gene therapy platform. In October 2019, Krystal announced positive
combined results from their Phase I and II trials looking at ten chronic or recurrent blister wounds being treated with KB103 –
9/10 closed up completely and the tenth closed within 7 days of retreatment. The drug was well-tolerated, Krystal said that no serious
adverse events or drug-related adverse events were reported, and there were no reports of inflammation or irritation in the KB103-treated
wounds; additionally, Krystal received an expedited review designation from the FDA and EMA.
● Wings Therapeutics (formerly ProQR) has initiated a Phase
Ib/II safety study of a topical gel, QR-313, intended to alter the RNA in recessive dystrophic epidermolysis bullosa, or “RDEB”,
patients with a mutation in exon 73.
● RegeneRx Pharmaceuticals is developing its investigational
drug, RGN-137, as a topical Tß4-based dermal gel formulation, and has recently commenced treating EB patients in a Phase II clinical
trial in the U.S.
Despite promising preliminary
data, in September 2017 the Phase III study of Zorblisa™ (allantoin), another topical investigational drug in development for EB,
reported no benefit over placebo and its development has ceased.
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Additionally, a clinical
trial investigating Castle Creek Biosciences’ Diacerein 1% was terminated after an independent data monitoring committee suggested
that the study will not meet statistical objectives; however, Castle Creek announced their intent to investigate more concentrated 2%
and 3% formulations. Stanford University investigated the use of topical sirolimus 2% to ameliorate plantar lesions in patients with EBS
and recently posted results that show no statistical difference from placebo.
Other approaches have shown promise and are under investigation
for the treatment of EB:
● Skin grafts with gene-modified epidermal sheets;
● Stem cell transplants;
● Intravenous replacement of recombinant collagen VII (for RDEB);
● Topical/intradermal gentamicin to restore laminin beta3 (JEB/DEB
with nonsense mutations);
● Granulocyte colony-stimulating factor (DEB); and
● Gene therapy for recessive DEB; FCX-007 (gene-modified dermal
fibroblasts for recessive DEB).
Additionally, several companies
are pursuing the symptomatic relief for EB patients, including the patient advocacy organization DEBRA, which is sponsoring a trial using
oral cannabinoids (THC, CBD) to mitigate pain and itch.
Regulatory Perspectives
According to the National
Epidermolysis Bullosa Registry, the overall incidence is about 20 per million live births and prevalence is 11 per million in the United
States. EB is designated as an “orphan disease”, and we plan to seek regulatory designation of INM-755 as such in the U.S.
and similar designations in various jurisdictions. The FDA defines orphan products as “those intended for the safe and effective
treatment, diagnosis or prevention of rare diseases/disorders that affect fewer than 200,000 people in the United States, or that affect
more than 200,000 persons but are not expected to recover the costs of developing and marketing a treatment drug”. The EMA has its
own definition of orphan disease and, under the European definition, EB is also an orphan disease.
The mission of the FDA Office
of Orphan Products Development, or “OOPD”, is to advance the evaluation and development of products (drugs, biologics, devices,
or medical foods) that demonstrate promise for the diagnosis and/or treatment of rare diseases or conditions. This arm of the agency evaluates
scientific and clinical data to identify and designate products as promising for rare diseases and to further advance scientific development
of such promising medical products. The OOPD also works on rare disease issues with the medical and research communities, professional
organizations, academia, governmental agencies, industry, and rare disease patient groups. The OOPD provides incentives for sponsors to
develop products for rare diseases. The Orphan-Drug Designation program, which is administered by the OOPD, provides orphan status to
drugs and biologics which are defined using the FDA definition above. The Orphan Products Grants Program, which is administered by the
OOPD, provides funding for clinical research that tests the safety and efficacy of drugs, biologics, medical devices and medical foods
in rare diseases or conditions.
It is worth noting that there
is a common pathway for application of orphan status for a product to both the FDA and EMA, and applicants to the FDA are advised to use
the common application platform. With regards to the data to be used in the application, it is expected that applicants demonstrate that
there is “promise” that the drug will be effective in treating said disease. “Promise” is interpreted to include
either data from clinical trials, data from case studies/reports, data from appropriate animal models or, on rare occasions where there
is no appropriate animal, data from in vitro experiments in addition to supporting information.
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Regulatory Incentives for Orphan Product
Development
Data Summary of Preclinical Studies for INM-755
INM-755 is a topical, single
cannabinoid cream formulation that is being developed to: (i) strengthen skin integrity in some patients with EBS (the most common form
of EB), and (ii) to treat symptoms of the disease in all patients with EB.
We have conducted several
preclinical studies to identify potential drug development pathways for a product in EB. The following data has been generated in support
of these cannabinoids as a potential therapy in EB:
(a) Enhancing skin integrity and skin regeneration:
A desirable treatment outcome
for all subtypes of EB would be enhanced skin integrity to prevent new wounds from forming. For patients with EBS, an estimated half of
them will have a mutation in K14. The goal of modifying keratin production is to target the upregulation of a potentially compensatory
K15. Under normal conditions, K5 and K14 combine (dimerize) to form adhesion at the basal layer within the epidermis. In EBS, one or both
of these keratins are damaged. Our investigational hypothesis is that K15 may be able to compensate by replacing K14 in this equation
and combining with K5 to form the adhesive properties needed for normal skin structure.
CBN was studied in a panel
of cannabinoids to determine its ability to regulate keratin expression. CBN induced upregulation of K15 in 2 of the 3 experiments. Concentrations
of 0.1 µM and 1 µM produced similar effects (approximately 6 to 17-fold increase in K15 expression). The highest concentration
of 10 µM did not increase the size of the effect (approximately 3 to 13-fold increase). Lack of a dose-response may mean a threshold
was exceeded, above which no further effect can occur.
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Relative K15 Expression in Human Keratinocytes
(HaCaT), Post-Confluence (48 hours)
Study 1 did not exhibit an important effect. The reason for
this is uncertain, with one hypothesis being that the cells tested had been through too many passages.
Despite the variation observed across these three studies, these results
are encouraging as INM-755 cream may help create stronger skin by upregulating K15.
Hemidesmosome formation also
occurs during normal differentiation of keratinocytes as they mature from the basal layer, not only in a wound-healing situation. Through
the upregulation of K15, INM-755 cream applied to intact skin might gradually strengthen the skin and reduce the number of blisters and
eventual wounds. For this effect, it could also be applied to wounds that have completed the initial re-epithelialization stage.
(b) Effects on Wound Healing
Cutaneous wound healing is
a complex process with four main phases: inflammation, re-epithelialization, tissue formation, and tissue remodeling. In EB wounds, all
four phases of cutaneous wound healing can be impacted, leading to chronic non-healing wounds. The wounds of EB patients are found primarily
at or close to the junction of the epidermal and dermal layers. In these partial-thickness wounds, wound closure is achieved primarily
by re-epithelialization rather than through granulation.
One major disease symptom
in EB is the extensive wounds that can be generated throughout any day by simple friction on the skin, even as simple as clothes rubbing
the skin. In addition to increasing the skin integrity via K15 up-regulation, another key goal would be facilitating accelerated wound
healing via rapid skin regeneration and wound closure. E-Cadherin is major component of epithelium integrity. During wound healing, transforming
growth factor beta, or TGF-ß, causes a reduction in E-Cadherin, allowing keratinocyte migration across the open wound. This is then
followed by a return to normal levels of E-Cadherin to rebuild the integrity of the skin. CBN may play a role in the second phase of wound
healing by accelerating the normalization of E-Cadherin expression. Additional studies are warranted to further explore this effect.
On July 10, 2017, we announced
that we had entered into a research and development collaboration with ATERA SAS of France, a leading tissue engineering company specializing
in the development of advanced human tissue models. On April 6, 2018, under the terms of the Agreement, we and ATERA agreed to transfer
the execution of the collaborative research to the Fraunhofer Institute in Germany. Under the terms of the agreement, Fraunhofer will
develop 3D human skin models of EB to evaluate the in vitro drug efficacy of CBN. Fraunhofer will also investigate the beneficial
effects of topically applied INM-755 at ultra-structural cellular and molecular levels on in vitro 3D reconstructed human full
thickness (dermis-epidermis) skin models composed of both normal and EB-derived skin cells. This project with Fraunhofer is designed to
assess the potential of INM-755 to have an impact in enhancing skin integrity to support our current data indicating an up-regulation
in specific keratins in the skin.
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Inflammation is an important
early step in wound healing and several of our studies demonstrated CBN has anti-inflammatory activity. Therefore, we conducted studies
to evaluate the effect of CBN on the normal wound healing process. While an early in vitro assay indicated that high concentration
of CBN could cause delays or prevent one of the first steps in wound healing, a subsequent study conducted with the INM-755 cream formulation
did not hinder cell viability, cell migration, or wound closure. This was demonstrated in a wound-healing experiment conducted in 3-dimensional
reconstructed human epidermis, or “RHE”, models with fully differentiated skin layers. Punch biopsy wounds were treated with
INM-755 creams at three strengths, which included the intended cream concentrations for the first studies in healthy volunteers. No delay
or inhibition of re-epithelialization was shown in CBN-treated models; the untreated control healed slightly slower in the first 5 days.
A composite of pictures
showing 2D photographic images of the punch biopsy wounds as they heal over time. The re-epithelialization of the wound is shown by migration
and growth of keratinocytes from the outside edge of the wound over time, migrating/growing to the center of the wound until the wound
is closed:
One more study was conducted
to explore the potential of CBN to interfere with early stage wound healing. In this study, superficial partial thickness wounds were
introduced by a dermatome in an in vivo animal model and treated for 7 days with INM-755 creams at the same three strengths as
used in the RHE models. Wound healing assessments included clinical observations, quantitative wound area measurements on photographic
images and histopathologic examination. Treatment with INM-755 creams at the strengths intended for clinical development did not cause
any delays in wound healing.
26
(c) Reducing inflammation:
CBN was tested on two important
markers of inflammation: IL-8 and MMP-9, because of their suspected links with blister formation in EBS and chronic cutaneous inflammation.
Interleukin-8, or IL-8, is
the most potent chemoattractant for blood neutrophils and important mediator of angiogenesis, or the formation of new blood vessels. Chronic
IL-8 production and neutrophil activation in a skin wound is an unfavorable element of skin pathology as it leads to extensive inflammation.
Matrix metalloproteinases,
or “MMPs”, are part of the zinc-dependent endo-proteases family which modulate homeostasis of the extracellular matrix in
skin. In response to skin damage and inflammation, metalloproteinases, including MMP-9, are often up-regulated. Specifically, exposure
of keratinocytes, such as HaCaT cells, to TNF-α induces expression of the inflammatory-related factors such as IL-8 and MMP-9.
IL-8 and MMP-9 are upregulated
in blisters of EBS patients and both are suspected to be contributing to blister formation. Both IL-8 and MMP-9 have been identified as
targets for treatment of cutaneous inflammation in EBS. Therefore, reducing one or both might be helpful for controlling/reducing chronic
skin inflammation in EBS.
While inflammation is an important first step
in healing a new cutaneous wound, prolonged inflammation will interfere with the later stages of wound healing.
Persistent inflammatory activity, which may occur with infection or
re-injury, often interferes with healing EB wounds.
27
Dose-Related Reduction in Relative IL-8 Expression in Human Keratinocytes
(HaCaT)
Insult = Tumor Necrosis Factor α (TNFα) and Interferon
g (IFNg)
For IL-8: CBN produced a clear dose
response with 35% reduction of IL-8 expression at 4 µM, 42% at 8 µM and 52% at 16 µM. Therefore, the IC50 was 16 µM.
By comparison, hydrocortisone at 10 µM caused a 54% reduction in IL-8 expression. CBN was similar to hydrocortisone with respect
to anti-inflammatory activity in this model.
28
Dose-Related Reduction in Relative MMP-9 Expression in Human Keratinocytes
(HaCaT)
Insult = Tumor Necrosis Factor α (TNFα) and Interferon
g (IFNg)
For MMP-9: Consistent results
in both studies with a dose-related reduction of MMP-9 expression. The consistency in direction and magnitude of effect provides convincing
evidence for down regulation of MMP-9 by CBN under insult conditions. The reduction was 22% at 4 µM and about 40% at both 8 and
16 µM. CBN showed a little less anti-inflammatory activity than hydrocortisone in this model, but still an important reduction.
(d) Pain reduction:
One pharmacodynamic endpoint
that was studied was pain. Pain is one of the key symptoms in EB and requires significant effort to monitor and treat. CBN has demonstrated
positive pain-relieving effects in NGF-induced in an in vivo pain model. To further demonstrate this, we utilized in vivo
electrophysiology where CBN blocked the pain signals in the neurons.
In an in vivo of myofascial
pain, nerve growth factor, or “NGF”, was injected into the masseter muscle, resulting in local mechanical sensitization lasting
about 5 days. On Day 3, CBN was injected into the masseter muscle and the mechanical withdrawal threshold was assessed with a rigid von
Frey hair. The mechanical force was gradually increased until the animal moved its head away from the stimulus.
29
Behavioral Effects of CBN in In vivo Model of Myofascial
Pain
Adapted from Wong H, Cairns BE. Arch. Oral Biol.
2019;104:33-9.
CBN injected into the masseter muscle significantly
reversed NGF induced mechanical sensitization at 10 minutes post-injection. (Behavioral study)
In parallel, electrophysiology
recordings of single ganglion neurons that innervate the craniofacial muscles were performed (33 masticatory muscle mechanoreceptors).
The electrophysiology effects parallel the behavioral effects. CBN significantly increased the relative mechanical threshold at 30- and
60-minutes post-injection. The results of this study have been published.
30
Electrophysiological Effects of CBN in In vivo Models of
Myofascial Pain
Adapted from Wong H, Cairns BE. Arch. Oral Biol.
2019;104:33-9.
(e) Antimicrobial activity:
In the literature, certain
cannabinoid compounds have been shown to have potent antibacterial properties including against various strains of multidrug-resistant
bacteria, including methicillin-resistant S. aureus , or “MRSA”. We have screened a number of cannabinoid compounds
by standard methods against a broad range of Gram-positive and Gram-negative aerobic and anaerobic bacteria. Results of this third-party
research demonstrated potent antimicrobial activity for all tested cannabinoid compounds, particularly against Gram-positive isolates.
While these cannabinoids may provide some localized antibacterial benefit, it is unlikely that such effects would encourage cessation
of broad-spectrum, systemic antibiotic usage.
(f) EBS formulation
prototype development:
Careful attention must be
paid to any topical product to be administered for the treatment of EB for several reasons. Our target product is designed to be applied
over major portions of the body (if not the entire body), once each day. As such, the patients, who are often children, will be exposed
to the active drug as well as the excipients of the skin cream, possibly for the duration of their lives. Accordingly, great care must
be given that these components will be safe over the long-term and that they will not add to the already painful condition that the patients
are suffering.
Particular attention has been given to the following criteria
in the formulation development for INM-755:
● The excipients are safe for extensive body surface area exposure
for a long duration of time;
● The API (cannabinoid) is dosed at the appropriate level –
high enough to provide optimal clinical effect at the treatment site but low enough to minimize any systemic exposure; and
● The final formulation can be administered daily with minimal
friction to the skin.
31
We have utilized the Franz
Cell diffusion method to assess skin penetration rates and depth for a proposed topical formulation for INM-755. The formulation is applied
to skin samples and measurements are taken of how much drug penetrates to which depths in the skin. Using this method, a preliminary formulation
of INM-755 achieved drug delivery to the epidermis and dermis layers as needed. Working with well-characterized excipients, we have tested
several slight variations in formulation to achieve the desired concentration of drug in the skin while simultaneously avoiding high drug
concentrations in systemic circulation (in the blood). We announced the selection of a final excipient formulation on November 12, 2018.
Starting in mid-2017 to present,
we worked with several leading, international preclinical contract research organization to: (i) develop a final formulation used in INM-755;
and (ii) initiate work of an Investigational New Drug Application, or “IND” enabling pharmacology and toxicology studies that
are required before INM-755 could be used in future clinical studies.
Toxicology and Safety Pharmacology Studies of CBN
The investigational medicinal
product, INM-755 (CBN) cream is for topical application on the skin. The cream base has a simple formulation with known pharmaceutical-grade
excipients. It is a pluronic lecithin organogel. Pluronic lecithin organogels have been widely used by compounding pharmacists for topical
preparations since the early 1990s. Therefore, the focus of the toxicology program has been to characterize effects of the active agent.
CBN is a new molecular entity,
or “NME”, not yet approved for medical use in any country. Therefore, we are required to perform thorough safety testing prior
to human administration. The intended route of administration for INM-755 is topical and is anticipated to result in low systemic exposure
via the bloodstream. Despite only nominal risk of meaningful systemic exposure, regulatory authorities still require that we examine the
consequences of systemic exposure on key biological functions and organ systems. For this purpose, the drug was administered by subcutaneous
(SC) injection to achieve high in blood circulation. Topical safety studies using the intended route of administration and the clinical
cream formulation were also conducted. These nonclinical toxicology studies included:
● Topical 28-day safety, in vivo;
● Systemic 28-day safety study, in vivo , with SC administration;
● Genotoxicity – standard battery of required tests for
NMEs, including:
o In vitro bacterial mutagenicity study (classically
the Ames assay) [Organisation for Economic Cooperation and Development test guideline 471 (OECD 471)],
o In vitro micronucleus study in Chinese Hamster Ovary
cells [OECD 487], and
o In vivo mammalian erythrocyte micronucleus study [OECD
474];
● Phototoxicity – required because CBN has some absorbance
in the UVB range; in vitro neutral red dye uptake study in cells from BALB/c 3T3 mice [OECD 432];
● EpiOcular, in vitro eye irritation study [OECD 492];
● Non-adjuvant Buehler method skin sensitization study, in
vivo [OECD 406]; and
● In vivo drug distribution study with SC injection of
radiolabeled drug.
In the 28-day in vivo
dermal toxicity study, INM-755 cream was given as topical daily doses applied to 10% body surface area. The quantity of cream applied
resulted in a thick layer of cream, much more than a typical clinical application. After each daily cream application, the application
sites were covered with a hypoallergenic, waterproof, breathable dressing for 24 hours and then scored for local tolerance. In this GLP
study, systemic toxicity was also fully investigated by standard parameters. Based on clinical and histopathologic review, no CBN-related
dermal toxicity was demonstrated in this study. Systemic exposure was minimal due to the topical route of administration and no systemic
toxicities occurred either. The No Adverse Effect Level, or “NOAEL”, was determined to be the highest concentration of cream
tested.
32
In the 28-day in vivo
systemic toxicity study, CBN was given as daily SC injections up to the solubility-driven maximum feasible dose. No adverse drug-related
effects were noted on clinical signs, clinical pathology parameters, ophthalmic evaluations, gross necropsy, organ weights, or histopathology.
CBN was well tolerated at all doses, despite considerable systemic exposure. The NOAEL was determined to be the highest dose tested.
The standard battery of genotoxicity
studies was conducted with CBN (2 in vitro and 1 in vivo ) and all were negative. CBN did not cause phototoxicity in vitro .
INM-755 cream at low and mid dose levels did not cause eye irritation in vitro . INM-755 cream at the highest tested dose did not
cause a sensitization reaction in the in vivo sensitization model.
In summary, we have completed
20 safety pharmacology and toxicology studies to investigate the effects of CBN. We have also completed three Phase 1 safety and tolerability
studies in healthy volunteers, two studies of which were conducted with varying concentrations of INM-755 cream and one study of which
examined the non-CBN components of the cream base for INM-755.
Toxicity to Central Nervous System
Due to the well-documented
psychoactivity of THC, all cannabinoid compounds need to be tested for their psychoactive potential. In a standardized safety pharmacology
study, we tested exceptionally high dose levels of CBN (more than 10,000 times the expected systemic exposure after topical dosing). No
central nervous system adverse effects were observed even at the highest dose. 108 different central nervous system criteria were measured.
The toxicology and safety
pharmacology data package covered a broad range of drug concentrations and was designed to support other clinical programs to treat topical
skin conditions.
Summary of Completed and Contemplated Clinical Development Plans
A regulatory application
to support our first Phase I clinical trial in healthy volunteers with INM-755 (77-101-HV) was submitted November 4, 2019 and approved
December 6, 2019. The initial Phase I clinical trial evaluated the safety, tolerability, and pharmacokinetics of INM-755 cream in 22 healthy
volunteers with normal, intact skin; the volunteers had cream applied once daily for a period of 14 days. All subjects in this first clinical
trial completed treatment and evaluations by March 27, 2020. Database completion and data analyses were delayed by pandemic restrictions.
Study results were reported November 25, 2020. A blinded interim safety review from the first 16 subjects in the Phase I study were included
in a regulatory application that was approved April 17, 2020, for a second Phase I clinical trial of 8 healthy volunteers to test the
local safety and tolerability of applying sterile INM-755 cream to small wounds once daily for 14 days. As with the initial Phase I trial,
the second clinical trial (755-101-HV) was conducted with two different drug concentrations and a vehicle control. Enrollment began in
early July 2020 and the clinical trial completed treatment and evaluations at the end of September 2020. Study results were reported January
8, 2021. The safety of INM-755 will continue to be assessed throughout its clinical development.
33
INM-755 cream was well tolerated
in the two Phase I clinical trials in healthy volunteers and the next step will be to study INM-755 cream in patients with EB (Study 755-201-EB).
Regulatory applications to support this global trial have been filed and are under review by the National Competent Authorities and Ethics
Committees in Germany, France, Italy, Austria, Israel, Greece and Serbia, with patient enrollment expected to begin in 2H21.
We can make certain scope-estimates
in terms of potential clinical trial sizes, timing and endpoints based on the recent clinical pathway followed by another phytochemical-based
topical product for EB, Zorblisa TM (Amicus Therapeutics). The key finding from our review of publicly available information
for the Zorblisa TM development program is that a clinical program is very focused for an orphan indication and the clinical
trials do not include large numbers of patients. It would not be feasible to conduct large trials for such a rare disease. Therefore,
the clinical studies need to be carefully designed and controlled to allow suitable assessment of the safety and efficacy of a new therapy
in a small number of patients. Broad multicenter trials would be needed to recruit patients as quickly as possible. We will work closely
with regulatory authorities and clinical experts in developing the clinical program for INM-755. The table below shows the completed and
near-term planned clinical studies. A Phase III clinical program, which will be needed in order to submit an application seeking regulatory
approval for commercialization, is not included in this table.
On average, it takes at least
ten years to complete the development of an investigational drug from its initial discovery to the marketplace, with clinical trials alone
taking six to seven years on average. It is not possible with any degree of certainty to estimate how long it will take to complete clinical
trials and potentially obtain marketing approval for INM-755. To the extent that INM-755 may potentially be designated as either a Fast
Track drug, a Breakthrough Therapy, or eligible for Priority/Accelerated Review, our timeline to any potential marketing approval may
be shorter than might otherwise be the case.
Next Steps for the INM-755 in EB Program
Subject to COVID-related delays and other external factors,
we plan to accomplish the following tasks for the INM-755 in EB program during calendar year 2021:
● Report results from Study 755-102-HV (completed);
● File regulatory submissions for Study 755-201-EB in 1H21 in
several countries (completed); and
● Initiate enrollment in Study 755-201-EB (2H21)
34
Commercial Opportunity for EB Products
Commercial attractiveness
and valuations of therapies under development (prior to market launch) can be measured several ways. In EB, there are research reports
from reputable investment banking firms regarding the potential peak annual sales for the products themselves, which may serve as a baseline
estimate for the value of a successfully marketed end product:
● Cowen and Company – In a September 2015 research report
on Amicus Therapeutics, Cowen estimated the market potential for a drug that provides partial symptomatic relief in EB (Zorblisa TM )
as having potential maximum annual revenues of $1.2B.
● JP Morgan – In a similar report from 2015 on Amicus,
JP Morgan estimated peak annual sales of ~$900M for Zorblisa TM , if approved for sale.
In addition, there have been a couple of relatively
recent, prominent in-licensing transactions and/or whole-company acquisitions around EB-focused products/companies, that may also serve
as a baseline estimate of the value of successful EB products:
● In February 2013, Shire PLC acquired Lotus Tissue Repair,
Inc., for total consideration of approximately $174 million, consisting of $49 million in upfront consideration and contingent consideration
of $125 million. At the time of the transaction, Lotus had a preclinical program developing recombinant human collagen Type VII as a
protein replacement therapy for Dystrophic EB, a subset of EB (approximately 30% of EB cases).
● In September 2015, Amicus Therapeutics, Inc. completed the
acquisition of Scioderm, Inc., or Scioderm, for total consideration of approximately $847 million, consisting of $229 million in upfront
payments of cash and stock, $361 million upon the achievement of certain clinical and regulatory milestones and $257 million upon the
achievement of certain sales milestones. Further, if a Priority Review Voucher, or “PRV”, would have been awarded for ZorblisaTM,
the lesser of $100 million or 50% of the PRV market value would have been delivered to Scioderm shareholders. Scioderm’s sole clinical
asset at the time of the transaction was ZorblisaTM, a Phase III-ready clinical product in development for the treatment of EB. The acquisition
was based on results from 42 patients in a Phase IIb clinical study of ZorblisaTM.
● In September 2019, Castle Creek Pharmaceutical Holdings Inc.
acquired Fibrocell Sciences, Inc. for total consideration of approximately $63.3M in cash. Fibrocells’ portfolio includes FCX-007,
and investigational late-stage stage gene therapy product candidate for the treatment of RDEB, a congenital and progressive orphan skin
disease caused by the deficiency of the protein COL7. FCX-007 is a genetically modified autologous fibroblast that encodes the gene for
COL7. A Phase III trial was initiated, and if successful, a Biologics License Application filing is expected in 2021. The portfolio also
includes FCX-013, an investigational, gene therapy candidate for the treatment of moderate to severe localized scleroderma. FCX-013 is
currently enrolling for the Phase I portion of a Phase I/II clinical trial.
Valuation of development stage technologies, as
well as the eventual market success, can be influenced by multiple factors including but not limited to the approved labeling (“indication”)
for a product, efficacy and safety profile relative to competition, speed to market relative to competition, pricing/reimbursement.
35
Key Milestones for the EB Program:
● August 6, 2015 – We reported positive response from
preclinical research on several cannabinoids (one of which was CBN), tested in various in vitro assays. By modulating the expression
of various keratin genes that are responsible for cytoskeleton intermediate filaments and/or wound healing using different cannabinoids,
we sought to alleviate the EBS symptoms. We believe that these preliminary results validated our approach as the cannabinoids displayed
modulation of expression of various keratin genes.
● November 4, 2015 – We released additional preliminary
preclinical data for the two-cannabinoid product INM-750 (which contained CBN as one of the APIs) demonstrating positive effects in both
wound healing/skin regeneration and in reducing inflammation, two key hallmarks of EB.
● May 18, 2016 – We reported additional preclinical results
demonstrating positive pain-relieving effects of cannabinoids in animal models. This animal data demonstrated a reduction in both acute
and chronic pain (CBN was one of the cannabinoids tested in this study).
● May 4, 2017 – We filed an application with the Canadian
Intellectual Property Office a PCT Application, Serial No. CA2017050546 titled, “A Cannabinoid-Based Topical Therapy for Diseases
and Conditions Associated with Intermediate Filament Dysfunction”.
● July 10, 2017 – We announced that we entered into a
research and development collaboration with ATERA SAS of France, or “ATERA”, a leading tissue engineering company specializing
in the development of advanced human tissue models. Under the terms of the agreement, ATERA would develop 3D human skin models of EB
to evaluate the in vitro drug efficacy of a two-cannabinoid combination (one of which was CBN). ATERA would also investigate the
beneficial effects of topically applied cannabinoids at ultra-structural cellular and molecular levels on in vitro 3D reconstructed
human full thickness (dermis-epidermis) skin models composed of both normal and EB-derived skin cells. On April 6, 2018, under the terms
of the agreement, we and ATERA agreed to transfer the execution of the collaborative research to the Fraunhofer Institute in Germany.
● Since mid-2017 to present, we have worked with several leading
GLP-certified preclinical contract research organizations, and other internationally recognized contractors to: (i) develop a final formulation
for our CBN cream; and (ii) complete work on safety pharmacology and toxicology studies that are required before CBN could be used in
clinical studies.
● November 12, 2018 – We announced that the selected formulation
demonstrated good drug penetration and adequate drug concentrations in the epidermis, which is the target tissue for INM-750, a two-cannabinoid
formulation containing CBN as one API. Also, two types of genotoxicity studies demonstrated no mutagenicity with the two-cannabinoid
formulation. Two 7-day dose-range-finding and pharmacokinetic studies were conducted for assessment of systemic toxicity. The lack of
any negative results from these studies support continued development of INM-750.
● February 12, 2019 – We announced favorable results for
INM-750, a two-cannabinoid topical formulation, in two topical, 7-day dose-range-finding studies that evaluated skin irritation, plasma
pharmacokinetics, histology and skin/drug concentrations. There were no drug-related adverse effects on the skin and the extent of systemic
cannabinoid exposure was minimal after topical administration of the cream despite a dosing level 100 to 1,000-fold higher than the anticipated
clinical dose.
● March 13, 2019 – We announced that we will conduct all
future development with a single cannabinoid skin cream, now designated INM-755. We determined that the clinical development path forward
with its investigational drug candidate for the treatment of EB, previously referred to as INM-750, will be optimized by transitioning
to an alternative formulation. INM-755 is formulated based on one of the two cannabinoids that comprised INM-750. We believe that pursuing
a single-agent formulation, rather than a combination product, will ultimately improve the probability of development and regulatory
success in this complex and rare disease.
● November 5, 2019 – We submitted a clinical trial application
to initiate a Phase I human clinical trial for INM-755 in healthy volunteers in the Netherlands.
36
● December 9, 2019 – We received clinical trial application
approval for study 755-101-HV, a randomized, double-blind, vehicle-controlled Phase I study designed to evaluate the local and systemic
safety, tolerability, and pharmacokinetics of INM-755 applied daily on intact skin in healthy volunteers. Two strengths of INM-755 cream,
plus vehicle-only, will be evaluated in 22 adult subjects over a 14-day treatment period.
● January 20, 2020 – We revealed that the active ingredient
in INM-755 and INM-088 is the rare cannabinoid, CBN. We are the first company to conduct human clinical trials with CBN. Extensive preclinical
program to support the INM-755 program was exhibited at the EB2020 World Congress in London UK.
● March 10, 2020 – We reported completed enrollment in
Study 755-101-HV. Treatment is expected to conclude towards the end of March and final study results are anticipated to be announced
in the second half of calendar 2020.
● March 20, 2020 – We provided an update on operational
impact of the response to the COVID-19 pandemic which included discussions with the clinical site conducting the 755-101-HV Phase I trial
in the Netherlands (Centre for Human and Drug Research).
● March 24, 2020 – We announced the filing of a Clinical
Trial Application, or “CTA”, in the Netherlands to initiate a second Phase I human clinical trial for INM-755 in healthy
volunteers. 755-102-HV is a randomized, double-blind, vehicle-controlled, Phase I study designed to evaluate the safety and tolerability
of INM-755 cream applied daily on epidermal wounds in healthy volunteers. Two strengths of INM-755 cream will be evaluated in 8 adult
subjects over a 14-day treatment period.
● April 1, 2020 – We announced that all subjects participating
in the 755-101-HV Phase I clinical trial had completed treatment and clinical evaluation.
● April 30, 2020 – We announced clinical trial application
approval in the Netherlands for Study 755-102-HV, a randomized, double-blind, vehicle-controlled Phase I study designed to evaluate the
safety and tolerability of INM-755 (two strengths) applied daily for 14 days on epidermal wounds in 8 healthy volunteers.
● July 7, 2020 – We announced initiation of enrollment
of the second Phase I healthy volunteer study (755-102-HV). The 755-102-HV clinical trial is a randomized, double-blind, vehicle-controlled,
Phase I study designed to evaluate the safety and tolerability of INM-755 cream applied daily on epidermal wounds in healthy volunteers.
Two strengths of INM-755 cream will be evaluated in eight adult subjects over a 14-day treatment period. As with InMed’s first
Phase I clinical trial with INM-755, the 755-102-HV trial is being conducted at the Centre for Human Drug Research in Leiden, the Netherlands.
InMed continues to anticipate reporting results from both Phase I trials in the second half of calendar 2020.
● September 24, 2020 – We announced completion of subject
treatment in the second Phase I study in healthy volunteers (Study 755-102-HV). We anticipate reporting results from both Phase I trials
in the second half of calendar 2020. Assuming a positive safety profile of INM-755 for both intact skin and epidermal wounds, we anticipate
filing regulatory applications for its first study in EB patients in the first quarter of 2021.
● November 25, 2020 – We announced the top-line results
of Study 755-101-HV (“Study 101”). Study 101 was a randomized, vehicle-controlled, double-blind, Phase 1 trial, that examined
the safety and tolerability of two strengths of INM-755 cream on intact skin in 22 healthy adult volunteers over a 14-day treatment period.
The Study 101 results indicate that INM-755 was safe and well-tolerated on intact skin, caused no systemic or serious adverse effects.
In addition, there were no subject withdrawals due to adverse events. Drug concentrations in the blood were very low, as expected.
37
● January 8, 2021 – We announced the top-line results
of Study 755-102-HV (“Study 102”). Study 102 was a randomized, double-blind, vehicle controlled, single-center study, in
8 healthy adult volunteers to test the tolerability of 14 days of application of the INM-755 cream on epidermal wounds under treatment
procedures designed to simulate wound care for Epidermolysis Bullosa (“EB”) patients with open wounds. Results of Study 102
indicate that INM-755 cream was safe and well-tolerated on induced open epidermal wounds, caused no systemic or serious adverse effects.
In addition, there were no subject withdrawals due to adverse events. These data from Study 101 and Study 102 support moving forward
into clinical trials in patients with EB.
● April 28, 2021 – We announced that we filed Clinical
Trial Applications (“CTAs”) in Austria, Israel and Serbia as part of a Phase 2 clinical trial of INM-755 (cannabinol) cream
in Epidermolysis Bullosa (“EB”). Additional CTAs for 755-201-EB (the ‘201 study) will be submitted to National Competent
Authorities (“NCAs”) and Ethics Committees (“ECs”) in France, Germany, Greece, and Italy in the coming weeks.
Responses from the NCAs and ECs are expected throughout July and August 2021; timing will vary slightly by country due to differences
in local procedures.
Additional Indications for INM-755
Once a company has gone to
the significant investments of bringing a new chemical entity into human clinical trials, the traditional approach is to investigate as
many therapeutic uses of that product in different indications, or specific diseases. We intend to pursue this strategy as a way to leverage
our knowledge of CBN and investment in the development of INM-755 as a topical skin cream. Under the assumption that we would use the
same formulation for other dermatological indications, there should be no need for further Phase I safety studies allowing us to proceed
directly to Phase II safety and preliminary efficacy studies in humans, since the toxicology and initial human safety studies have been
completed; however, the adequacy of the nonclinical and human safety data to support new dermatologic indications will be determined by
the appropriate health authority. We intend to engage with dermatologists to discuss which diseases might best benefit from INM-755, outside
of EB.
INM-088 for the Treatment of Glaucoma
Introduction
Glaucoma is a chronic optic
neuropathy that is typically characterized by high intraocular pressure. The cause of glaucoma is understood to be inadequate or obstructed
drainage of the fluid in the eye, or “aqueous humor”, through a drainage membrane called the trabecular meshwork, or “TM”,
increasing the fluid pressure within the front part of the eye, or “anterior chamber”, and subsequently leading to pressure
at the back part of the eye, or “posterior chamber”. The increased intraocular pressure exacts a toll on the nerve cells,
called neurons, located at the back of the eye in the retina, thinning the mesh-like tissue in this region and resulting in damage to
the neurons and specifically to the optic nerve, which provides the impulses of sight to the brain. This damage leads to blindness. Glaucoma
is currently the second leading cause of blindness world-wide and is estimated to affect a population of about 76 million worldwide..
38
Current glaucoma therapies generally
act to lower intraocular pressure either by reducing the aqueous humor production by the cells around the eye, or the “ciliary epithelial
cells”, or by increasing fluid drainage through the TM. Nevertheless, we believe that there is considerable room for improvement
of existing drugs, most of which are formulated as eye drops, in terms of increasing the amount of drug that can be safely delivered to
increase its effect, improving the delivery of the drug into the eye, and reducing the common effect in currently used therapies that,
over time, their efficacy diminishes as the body becomes tolerant to these classes of drugs. Studies have shown that when drugs are delivered
as eye drops, less than 5% of the dose penetrates into the eye, indicating that 95% of the administered drug never reaches its desired
target as it is wiped away upon blinking. Thus, there is much room for improvement on the drug delivery as a means of increasing clinical
efficacy.
CBN
is the key API in our second drug candidate, INM-088, which is in preclinical studies as a potential treatment for glaucoma. We conducted
studies to test the ability of CBN to provide protection to the neurons at the back of the eye, referred to as “neuroprotection”,
and reduce the intraocular pressure in the eye. We compared several cannabinoids, including CBD and THC, to determine which cannabinoid
was the best drug candidate for the treatment of glaucoma. Of all of the cannabinoids examined, CBN demonstrated the most optimal effect
of neuroprotection. Furthermore, CBN also exhibited intraocular pressure reduction capability.
Science
behind Glaucoma
Glaucoma
is a group of eye diseases which results in degeneration of neurons, damage to the optic nerve and vision loss. The most common type
is open-angle glaucoma, or “OAG”, with less common types including closed-angle glaucoma, or “CAG”, and normal-tension
(i.e., no increase in intraocular pressure) glaucoma. OAG develops slowly over time and the patients normally don’t experience
pain. If left untreated, side vision may begin to decrease followed by central vision, resulting in blindness. CAG can present gradually
or suddenly. The sudden presentation may involve severe eye pain, blurred vision, mid-dilated pupil, redness of the eye and nausea. Vision
loss from glaucoma, once it has occurred, is permanent.
Risk
factors for glaucoma include increased pressure in the eye, the thinness of the cornea, a family history of the condition, age over 40
years in African Americans, and age over 60 years for other ethnic groups (especially Mexican Americans). High intraocular pressure (those
with a value of greater than 21 mmHg or 2.8 kPa) is often associated with a greater risk of glaucoma. However, some people may have high
eye pressure for years and never develop damage. Conversely, neurodegeneration and optic nerve damage may occur with normal pressure,
known as normal-tension glaucoma. The mechanism of OAG is believed to be slow exit of aqueous humor through the trabecular meshwork while
in CAG the iris blocks the TM. Diagnosis is typically made by a dilated eye examination.
If
treated early, it is possible to slow or stop the progression of the disease with medication, laser treatment, or surgery. Currently,
the goal of these treatments is to decrease eye pressure. A number of different classes of glaucoma medication are available. Laser treatments
may be effective in both OAG and CAG. Several of types of glaucoma surgeries may be used in people who do not respond sufficiently to
other measures. Treatment of CAG is a medical emergency.
Epidemiology
The
global prevalence of glaucoma for population aged 40–80 years is 3.54%, of which 75% is OAG. As of 2010, there were 44.7 million
people in the world with OAG of which 2.8 million were in the United States. By 2020, the prevalence is projected to increase to 80 million
worldwide and 3.4 million the United States. It occurs more commonly among older people. CAG is more common in women. Both internationally
and in the United States, glaucoma is the second-leading cause of blindness.
Current
Treatments in Glaucoma
Current
treatments for glaucoma include medication, laser treatment and surgery. The goals of glaucoma management are to avoid glaucomatous damage,
nerve damage and preserve visual field and total quality of life for patients, with minimal side effects. This requires appropriate diagnostic
techniques and follow-up examinations, and judicious selection of treatments for the individual patient. Although intraocular pressure
is only one of the major risk factors for glaucoma, lowering it via various pharmaceuticals and/or surgical techniques is currently the
mainstay of glaucoma treatment.
39
Current
prescription eyedrop medications targeting intraocular pressure reduction include:
● Prostaglandins
and prostaglandin analogs such as latanoprost, bimatoprost and travoprost to increase the
outflow of fluid from the eye and reduce ocular pressure. These can sting the eyes, darken
the iris and eyelashes, and blur vision;
● Beta
blockers such as timolol and betaxolol reduce ocular pressure by reducing the production
of fluid in the eye. Possible side effects include wheezing or difficulty breathing, slowed
heart rate, lower blood pressure, impotence and fatigue;
● Alpha-adrenergic
agonists such as apraclonidine and brimonidine, both reduce the production of aqueous humor
and increase the outflow of fluid from the eye. Side effects may include dry mouth, red eyes
or eyelids, fatigue, low or high blood pressure, blurred vision and light sensitivity; and
● Carbonic
anhydrase inhibitors such as dorzolamide and brinzolamide reduce the production of fluid
in the eye, but they are associated with blurred vision, bitter metallic taste in the mouth,
dry eyes, red/irritated eyes, headache, and upset stomach.
Often
patients need to take a combination of different drugs and multiple eye drops throughout the day. Given side effect profiles, many patients
do not take their medications properly or at all. Surgery and laser therapies are intended to physically improve the drainage of fluid
from the eyes and lowering of the intraocular pressure. Patients with OAG can have clogged channels in the TM opened with laser therapy,
filtering surgery (trabeculectomy) or electrocautery. In other cases, small drainage tubes may be implanted in the eye. Possible complications
include pain, redness, infection, inflammation, bleeding, abnormally high or low eye pressure and loss of vision. Some types of eye surgery
may accelerate the development of cataracts. Additional procedures may be needed if eye pressure continues to increase.
Treatment
Considerations based on Glaucoma Severity
Competition
for INM-088 in Glaucoma
Due
to the large medical need and potentially significant commercial opportunity, the competitive landscape of glaucoma is intense. As such,
there are currently over 10 medications approved by the FDA for the treatment of glaucoma, which are summarized in the table below, according
to drug class. In addition to the currently approved medications, there are a multitude of other therapies being evaluated in clinical
trials, and many others at the preclinical stage. Finally, it should be noted that there are several laser surgeries, and other forms
of surgical procedures that are currently being performed to treat glaucoma, which also serve as a source of competition to the therapeutic
alternatives.
In
December 2017, the FDA approved RHOPRESSA® as the first in a new class of glaucoma treatments known as Rho Kinase inhibitors.
40
RHOPRESSA®
is indicated for the reduction of elevated intraocular pressure in patients with open-angle glaucoma or ocular hypertension.
Most
treatments for glaucoma are designed to lower and/or control intraocular pressure. Glaucoma eye drops often are the first choice over
glaucoma surgery and can be very effective initially at controlling intraocular pressure to prevent eye damage. Glaucoma eye drop formulations
are often prescribed in combination to achieve an additive or synergistic effect for the best intraocular pressure control. However,
some people are poor candidates for various glaucoma eye drops; in particular, those who may react negatively to drug product that may
reach other parts of the body. A certain percentage of the active ingredient of the medication, though small, will enter the bloodstream
via eye vasculature and may adversely affect other organ functions such as heart rate and breathing.
INM-088
is envisioned as a once- or twice-a-day eye drop medication to compete with treatment modalities in the medicines category if approved
for commercialization.
In
addition to INM-088, we are only aware of one other pharmaceutical-grade cannabinoid-based therapy being evaluated for the treatment
of glaucoma. Specifically, Skye Biosciences Inc. (formerly Emerald Biosciences) is developing NB1111 (THC-Val-HS) for the treatment of
glaucoma. NB1111 is a THC prodrug, which has demonstrated intraocular pressure-lowering efficacy in preclinical models.
Medicines
for Glaucoma Treatment (Intraocular Pressure-Lowering Drugs)
Investigational
Glaucoma Treatments
Despite
the treatments available for lowering the intraocular pressure, there are some individuals for whom these treatments are either not tolerated
due to side effects or in whom the intraocular pressure is not sufficiently lowered. In these situations, both glaucoma patient and physician
look for alternative therapies.
While
some experimental glaucoma medications explore new ways of controlling intraocular pressure, other treatments are directed at protecting
the optic nerve (neuroprotection) to prevent eye damage, potential vision loss or even blindness. Many ongoing clinical studies are trying
to find neuroprotective agents that might benefit the optic nerve and certain retinal cells in glaucoma.
41
Some
investigational treatments are undergoing FDA clinical trials to prove safety and effectiveness. Other potential glaucoma treatments
are strictly in experimental stages and may be years away from the possibility of being available on the marketplace.
Cannabis
(THC) to treat Glaucoma
Decades
of anecdotal evidence suggests that the use of Cannabis may play a role in lowering intraocular pressure in glaucoma. However,
no such products have been formally investigated in clinical trials and none is currently approved for the treatment of this disease.
The neuroprotective role of cannabinoids has not heretofore been utilized as a therapeutic strategy in glaucoma, primarily due to great
difficulties associated with the targeted delivery of cannabinoids to intraocular tissues. This class of compound is also relatively
poorly bioavailable due to its low aqueous solubility.
Previously
reported attempts for topical delivery of cannabinoids, in particular, the psychoactive drug THC, to the ocular tissues used formulations
based on mineral oil. Until very recently, studies on novel topical ophthalmic formulations of cannabinoids have been largely non-existent.
Nevertheless, the use of marijuana to treat glaucoma has extensive anecdotal evidence and some supporting clinical data. It has been
definitively demonstrated and widely appreciated, that smoking marijuana lowers intraocular pressure in both normal individuals and in
those with glaucoma. Certain drawbacks are associated with the use of (smoked) marijuana to treat glaucoma:
● Marijuana
has a short duration of action (only 3-4 hours), meaning that to lower the intraocular pressure
around the clock it would have to be smoked every three hours;
● Marijuana’s
mood-altering effects, almost exclusively via the chemical THC, would prevent the patient
who is using it from driving, operating heavy machinery, and functioning at maximum mental
capacity; and
● Marijuana
cigarettes also contain hundreds of compounds that damage the lungs, and the deleterious
effect of chronic, frequent use of marijuana upon the brain is well established.
Other
means of administering THC include oral, sublingual, and eye drop instillation. The first two modalities avoid the deleterious effect
of marijuana smoke on the lungs but are limited by the other systemic side effects. Other side effects associated with systemic use of
THC for glaucoma include: impaired lung function, psychosis, anxiety dependence, tolerance, acute cardiac events and central nervous
system-related adverse effects. In one study in which doctors offered some of their patients with worsening glaucoma the option of pills
containing THC and/or smoking marijuana, all of them experienced side effects and 4 of 9 patients had discontinued use by either or both
methods within 9 months due to side effects. Given that glaucoma is a lifelong disease, commonly requiring treatment for decades, these
results strongly suggest that systemic use of THC is not a reasonable treatment option for such patients. The use of eye drops containing
THC, or related compounds, has been investigated, but it has not yet been possible to formulate an eye drop that is able to introduce
the drug into the eye in sufficient concentrations due to the low poor water solubility of the active ingredients.
Although
marijuana may lower the intraocular pressure temporarily, that intraocular pressure-lowering effect is only one consideration in slowing
the optic nerve damage of glaucoma. For instance, there is a growing body of evidence that inadequate blood supply to the optic nerve
may contribute to glaucoma-related damage. Since marijuana given systemically is known to lower blood pressure, it is possible that such
an effect could be damaging to the optic nerve in glaucoma, possibly reducing or eliminating whatever beneficial effect that would be
conferred by lowering intraocular pressure. For this reason, marijuana, or its components administered systemically, cannot be recommended
without a long-term trial which evaluates the health of the optic nerve.
An
exciting finding is the discovery of receptors for cannabinoids in the tissues of the eye itself, suggesting that local administration
has the possibility of being effective. Furthermore, there is evidence from research in the brain that there may be properties of the
cannabinoids that protect nerve cells like those in the optic nerve. This raises the hope that cannabinoids could protect the optic nerve
not only through intraocular pressure-lowering but also through a neuroprotective mechanism. However, unless a well-tolerated formulation
of a marijuana-related compound with a much longer duration of action is demonstrated in rigorous clinical testing to reduce optic nerve
damage and preserve vision, there is no scientific basis for use of these agents in the treatment of glaucoma.
42
The
wide variety of topically effective anti-glaucoma drugs that are available today, and a few others in the developmental stage, represent
significant advancement in ocular therapeutics. While these topical ophthalmic preparations have reduced the risk of systemic toxicity
to some extent, their long-term use causes systemic as well as ocular toxicity. Many ophthalmologists generally select the drugs individually
and replace them regularly in order to prevent the habituation phenomenon (reduction in effect of the drug over time due to tolerance)
and negative side effects.
Drug
Discovery Process
To
date, we have utilized several preclinical investigations to:
● Compile
a list of genes that are associated with development of glaucoma disease from our own in-house
curated disease analysis. We grouped these selected genes based on the glaucoma disease hallmarks
such as trabecular meshwork remodeling, retinal ganglion cell survival and genes involved
in extracellular matrix; and
● Better
understand the relationship among selected glaucoma disease genes, we constructed a protein-protein
interaction network and the graphic view of the interaction network was built for further
discovery.
Glaucoma
is a neurodegenerative disease in which various triggers (such as elevated intraocular pressure) induce cascades of events, which ultimately
lead to apoptotic retinal ganglion cell death and result in irreversible loss of vision. However, as mentioned above, the goal of all
current glaucoma therapies is to reduce intraocular pressure without including any strategies of neuroprotective treatment. In fact,
some patients often fail to show much improvement even after intraocular pressure reduction, whereas others develop glaucoma in the absence
of elevated intraocular pressure.
Key
Preclinical Results for CBN as a Drug Candidate to Treat Glaucoma
INM-088
is an eye-drop CBN formulation being developed for the treatment of glaucoma. The preclinical development program for INM-088 has included
a number of studies comparing a number of cannabinoids, including CBN, THC and CBD, among others, to determine which cannabinoid holds
the greatest potential to treat glaucoma. This preclinical research to date is comprised of both in vitro and in vivo studies
and led to the selection of CBN as the lead drug candidate for further development.
The
scope of the in vitro studies to date include the following:
1)
Evaluation of the neuroprotective effects of selected cannabinoids on the differentiated retinal ganglion cells, or “RGCs”,
a thin layer of neurons responsible for relaying visual signals in the eye, under normal atmosphere pressure and elevated pressure conditions.
Notably,
exposure of RGCs to increasing concentrations of several cannabinoids, including THC and CBD resulted in dose dependent cytotoxicity,
or cell death, over time. Importantly, however, CBN-exposed RGCs demonstrated the lowest level of toxicity among the cannabinoids used
in these experiments (n=5). In addition, exposure of the RGCs to elevated pressure in a cell-based model for glaucoma (without exposure
to cannabinoids) for 72 hours resulted in high level of cytotoxicity, whereas exposure of these cells to both an elevated pressure (20-40
mmHg) plus CBN, within the same time-period, resulted in cell survival in a dose dependent fashion. A neuroprotective effect of CBN was
also observed under elevated pressure conditions in the pressurized chamber that is designed to mimic the clinical situation of increased
intraocular pressure in glaucoma; CBN performed better than both CBD and THC in this preclinical model under identical testing conditions.
43
2)
Evaluation of anti-apoptotic effects of CBN on the differentiated RGCs when exposed to elevated pressure conditions.
Using
the same in vitro model described above, we also looked at a specific, natural self-destruction process called programed cell
death, or apoptosis. We verified that CBN has an anti-apoptotic effect on differentiated RGCs when subjected to elevated hydrostatic
pressure. Exposure of these cells to high-pressure levels in the pressure chamber apparatus, without exposure to cannabinoids, for 6
hours resulted in an induction of apoptosis ranging from 30-60% (n=3). Exposure of these cells under the same conditions concurrently
with CBN prevented apoptosis and resulted in a higher level of cell survival.
3)
Evaluation of CBN impact on the expression of specific extracellular matrix (ECM) markers on primary human trabecular meshwork (TM) cells
under basal condition and following stress-induction with Transforming Growth Factor Beta 2 (TGF-ß2), a cytokine used to alter
extracellular matrix metabolism.
A
key risk factor for the development and progression of glaucoma is elevated IOP, the result of increased resistance to aqueous humor
outflow through the TM. Therefore, evaluation of CBN effects on TM observed under elevated pressure conditions mimics the clinical presentation
of IOP in glaucoma is relevant in the clinical context of the disease. Increased outflow resistance has been strongly correlated with
aberrantly elevated levels of TGF-ß2, a cytokine used to alter extracellular matrix metabolism of the TM of glaucoma patients compared
to healthy individual. Using human primary TM cells derived from various donors and propagated in vitro at different cell passages,
we were able to demonstrate that several extra-cellular matrix proteins, or “ECM” markers, were upregulated by TGF-ß2
induced condition. Furthermore, CBN treated TM cells basal condition or TGF-ß2 induced conditions for a duration of 72 hours resulted
in reduction in the expression of several of these ECM protein markers (n=5).
We
also conducted several in vivo experiments to understand the pharmacokinetics and efficacy of CBN in the eye as a potential treatment
for glaucoma. The scope of these in vivo studies to date include the following:
4)
Evaluation of CBN pharmacokinetic profile in the eye and plasma of a preclinical model by direct intravitreal (IVT) injection into the
eye.
Our
first in vivo study was designed to determine the pharmacokinetic profile of CBN in preclinical models, specifically measuring
CBN levels in the eye and plasma following direct bilateral IVT injection. This means that individual injections were made directly into
the vitreous humor (fluid of the central cavity of the eye). Following IVT delivery, CBN levels from the plasma (n=3 per time point)
and the eye (n=6 per time point) were measured at several timepoints using a qualified method. CBN levels in the plasma samples were
below the detection limit of the assay. Furthermore, CBN levels in the preclinical eye model were shown to persist for an extended period
of time with a projected half-life (t 1⁄2 ) in the eye of approximately 33 hrs.
5)
Evaluation of CBN neuroprotective and IOP-lowering effects in a preclinical glaucoma model by IVT injection.
We
conducted a preclinical efficacy study to evaluate neuroprotective and IOP lowering effects of CBN following IVT injection in a preclinical
episcleral vein laser photocoagulation model for glaucoma. To determine the health of the neurons inside the eye, a diagnostic tool called
pattern electroretinogram (pERG) was used to measure electrical activity generated by the neuron in response to light. The baseline pERG
measurements were initially made and treatment groups were randomized based on their baseline pERG amplitudes (n=11-14 per group). High
IOP was induced unilaterally by laser photocoagulation of episcleral veins (to approximately 19 mmHg). The untreated eye served as a
control. CBN was delivered by IVT injection after episcleral laser photocoagulation on three occasions. IOP and pERG were monitored at
specific time points throughout the study. Reduction in IOP (to approximately 13 mmHg for the CBN treated group) and improvement of pERG
amplitudes (-49.9% form baseline for vehicle control group, -31.6% from baseline for the active control (brimonidine tartrate) group
and -31.6% from baseline for the CBN group) were the outcomes measured that are useful in evaluating candidates for a potential glaucoma
treatment. In summary, data from this study demonstrated a reduction of IOP and improvement of pERG function following IVT injection
of CBN in this preclinical episcleral vein laser photocoagulation model of glaucoma.
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Ocular
Formulation Development for INM-088
There
are a wide variety of topically effective anti-glaucoma drugs that are available today and others in the developmental stage that represent
significant advancements for ocular therapeutics. Ophthalmologists typically prescribe drugs individually and then switch to different
classes of drugs on a regular basis in order to prevent the habituation phenomenon (reduction in effect of the drug over time) and negative
side effects. There is an opportunity for new therapies with low systemic toxicity and those which may not exhibit habituation.
Until
very recently, studies on novel topical ophthalmic formulations of cannabinoids have been largely non-existent. Designing an ideal delivery
system for any ocular disease depends on the molecular properties of the drug substance and incorporating it into the formulation while
taking into consideration parameters such as size, charge, and affinity towards various ocular tissues and pigments.
For
all delivery technologies under examination as candidates for INM-088, key design criteria include, among others:
● Biocompatibility
and biodegradability of the formulation;
● Viscous
fluid behavior while inside the container (to facilitate ease of manufacturing, handling
and dosing);
● Characterized
and defined drug release, absorption and subsequent carrier degradation;
● Optimized
particle size and surface charge to avoid irritation upon application to the eye and to facilitate
ocular penetration; and
● Stable
final drug product to ensure drug product quality storage over time.
One
of the delivery technologies under development as a potential delivery vehicle for CBN in ocular disease is our proprietary, stimulus-responsive,
nanoparticle-laden hydrogel vehicle for spatiotemporal and dosage-controlled release of cannabinoids into the aqueous humor of the eye.
This hydrogel is envisioned to be packaged as a liquid and is intended for application as an eye drop. We investigated the compatibility
and effectiveness of our hydrogel formulation with CBN as compared to other third-party ocular drug delivery technologies such as EyeCRO’s
MiDROPs® microemulsion. We conducted an in vivo study that compared both the hydrogel and MiDROPs® formulated with CBN
and showed that a similar level of CBN was measured in the retina and retinal pigmented epithelium tissues following topical administration
of each formulation. In early December 2020, we selected a final delivery technology based on the extensive data collected from these
assessments that included solubility, drug delivery localization and sustained effect. This selection resulted in a licensing agreement
with EyeCRO LLC for its proprietary MiDROPs® technology. Through this agreement, InMed has secured an exclusive, global commercial
rights for the utilization of MiDROPs® for all cannabinoids, cannabinoid analogs and their variants. One key benefit for our INM-088
program by working with EyeCRO is that their product development and testing with MiDROPs® is already well advanced, having been
previously reviewed by the US FDA during a pre-IND meeting.
Next
Steps for the INM-088 in Glaucoma Program:
Subject
to COVID-related delays and other external factors, we plan to accomplish the following tasks for the INM-088 in Glaucoma program during
calendar year 2021 and into calendar year 2022:
● Process
and analytical development and scale-up of INM-088 formulation, MiDROPs® with CBN, to
enable pre-clinical and clinical supply;
● Conduct
additional preclinical studies;
● Initiate
and complete IND/CTA-enabling toxicology studies; and
● Prepare
and file regulatory submissions (IND/CTA) and initiate the first clinical trials for INM-088.
45
Key
Milestones:
● May
10, 2017 – We announced the filing of a patent (US62/503,258) entitled, “Ocular Drug Delivery Formulation” for INM-085
as a cannabinoid-based topical (hydrogel) therapy for glaucoma, which is an important step in providing intellectual and commercial protection
for this therapy. We should note that the patent is for the hydrogel formulation and does not depend on which cannabinoid is used. We
are developing a stimulus-responsive, nanoparticle-laden vehicle for controlled delivery of ophthalmic drugs into the aqueous humor of
the eye.
● October
24, 2017 – We announced results from a study co-sponsored by us (Dr. Sazzad Hossain, our Chief Scientific Officer at the time)
and University of British Columbia (laboratories of Professors Vikramaditya Yadav and Ujendra Kumar). We believe that this InMed-University
of British Columbia study is the first ever to report hydrogel-mediated cannabinoid nanoparticle delivery into the eye, resulting in
enhanced drug uptake via the cornea and lens. This study further evidences our capacity to conduct a wide spectrum of drug development
activities, including:
● packaging
the cannabinoid as a nanoparticle;
● formulation
of a cannabinoid drug candidate into a novel, tissue specific delivery vehicle; and
● confirmation
of drug delivery and diffusion into a target tissue.
In
this study, our proprietary hydrogel delivery method offered unique rheological characteristics permitting it to form a thin, uniform
coating - essentially a gel-like lens - over the cornea through blinking of the eyelid. This lens holds the drug in place and allows
for trans-corneal absorption of the drug, which can then diffuse within the eye to the retina. Total drug delivered using this hydrogel
nanoparticle formulation was three-times higher than the control formulation.
● March
6, 2018 – We announced the publication of data on our glaucoma/hydrogel formulation program in the peer-reviewed journal Drug Delivery
and Translational Research. The article, titled “A stimulus-responsive, in situ forming, nanoparticle-laden hydrogel for ocular
drug delivery”, presents results from preclinical studies co-sponsored by us and was co-authored by Dr. Sazzad Hossain, our Chief
Scientific Officer at the time of publication, and conducted at the labs of Drs. Vikramaditya Yadav and Ujendra Kumar at the University
of British Columbia. In these studies, the investigators successfully validated the efficient transport of the formulated product in
whole-eye experiments. The work seamlessly combined product design, synthetic biology, polymer rheology, and analysis of mass transport
within ocular tissue. The hydrogel was formulated as a composite of hyaluronic acid and methylcellulose. Both polymers are biocompatible
and highly mucoadhesive, making them ideal candidates for an ocular formulation. The amphiphilic nanoparticles were composed of a block
copolymer composed of poly-ethylene oxide and poly-lactic acid, designed to facilitate enhanced cannabinoid drug delivery into the eye
via the cornea. Results from the experiment verified the performance of a stimulus-responsive switching between thixotropy (thinning
of the gel upon a shearing force, such as blinking) and temperature-dependent rheopexy (reforming as a gel after blinking), resulting
in a thin, uniform gel-like lens that holds the drug in place to allow for trans-corneal transport. Envisioned as a once-per-day (at
bedtime) administration, this formulation is designed to address many of the issues associated with current glaucoma medications.
● May
14, 2018 – We announced the filing of a PCT Application (PCT/CA2018/050548) for a cannabinoid-based topical therapy for glaucoma,
which includes the protection of our technology in several countries, including the United States, and claims a priority date from May
8, 2017 (PCT/CA2018/050548). The PCT Application filing is a conversion from the provisional patent filed in May 2017.
● Jan.
20, 2020 – We revealed that the active ingredient in INM-755 and INM-088 is the rare cannabinoid, CBN and that we are the first
company to conduct human clinical trials with CBN.
46
● May
12, 2020 – We announced filing of a PCT application entitled “Compositions and Methods for Use of Cannabinoids for Neuroprotection”.
This application was initially filed as a provisional patent application and it is pertaining to the potential of cannabinoids in the
prevention of neuron damage associated with glaucoma.
● On
May 27, 2020 – We provided an update on the preclinical results from its INM-088 drug development program including a summary of
the studies undertaken and the key results of those studies noting the potential for CBN to contribute an independent neuroprotective
effect in addition to the standard IOP reduction approach to treating glaucoma.
● Dec.
3, 2020 – We announced the selection of the final formulation for INM-088, and we secured an exclusive, worldwide license from
EyeCRO LLC for its Microemulsion Drug Ocular Penetration System (“MiDROPS ® ”) eyedrop delivery technology
targeting effective, topical administration of cannabinoids to the eye.
Additional
indications in ocular disease
Similar
to the strategy being pursued with INM-755, we intend to fully investigate the potential for CBN in INM-088 to treat a wide array of
ocular diseases, in particular, the potential for CBN to provide neuroprotection across several diseases where blindness is the ultimate
outcome. We are currently pursuing preclinical models to more closely study this effect and will leverage the toxicology and Phase I
safety studies across these new indications, if deemed applicable.
Other
Research and Development Programs
There
is a need to find alternatives to treat chronic and severe pain that are non-addictive and have limited side effects. We have conducted
limited preclinical investigations of the potential of non-THC cannabinoids to treat pain using a topical approach. In September 2018,
we filed a PCT Application in the United States for INM-405 as cannabinoid-based topical therapies for the treatment of pain, which is
an important step in protecting our intellectual and commercial property. The patent cites a range of cannabinoids, alone or in combination,
applied topically to treat various types of pain—muscle, nerve, arthritis-induced joint pain, etc.
Key
In Vivo Results for our Pain Program
Important
data from our research program for pain medications were published in the European Journal of Pain (2017) and the Archives of Oral Biology
(2019). Both publications specifically cited data on the use of THC and certain other cannabinoids, alone and in combination, at varying
ratios, in a preclinical pain model. Findings from the published studies include:
● Expression
of cannabinoid receptors on masseter ganglion neurons. Both CB1 and CB2 receptor expression was observed in the trigeminal ganglion neurons
that innervate the masseter muscle, as well as in the neuronal fibers in the muscle itself. This confirms that these peripheral nerves
may be appropriate targets for a cannabinoid therapy;
● Effect
of intramuscular injections of THC and certain other cannabinoids, alone and in combination, on nerve growth factor, or “NGF”,
induced sensitization. NGF, if injected into a target tissue (muscle), makes the tissue more sensitive to pain, as can be measured by
a mechanical threshold, or “MT”, scale. On this scale, a lower number represent a lower pain threshold, or a lower ability
to tolerate a painful stimulus. NGF injection resulted in a lowering of the MT score. Applications of THC and certain other cannabinoids,
either alone or in combination, were associated with an increase of MT, meaning a higher ability to tolerate pain. It should be noted
that the NGF-induced reduction in MT model mimics the type of pain reported by sufferers of TMD. Importantly, these cannabinoids only
affected the muscle into which it was injected; there was no effect on surrounding tissue; and
● In
a behavioral analysis in these studies, test subjects treated with peripheral application of THC, the leading psychoactive component
in marijuana, and certain other cannabinoids did not exhibit any effect on motor function. This indicates that the dose of THC used did
not achieve sufficient circulatory distribution to reach the brain where it may exhibit psychoactivity. However, repeat applications
of THC may still have potential to induce significant undesirable central effect.
47
Our
INM-405 research program is at an early-stage and its continued development is subject to available resources and/or our ability to find
funding or strategic partners. Continued investment in our INM-405 research program is under review and we will make a determination
as to its future development based on several strategic factors, including other research priorities, in due course.
We
have conducted a broad range of research and development activities to explore other uses of cannabinoids in treating human diseases
with unmet medical needs.
Areas
of our research focus have included Chronic Obstructive Pulmonary Disease, or “COPD”, neurodegenerative diseases such as
Huntington’s Disease, and breast cancer.
These
programs are at various early stages of development and, as non-core assets, their continued development is subject to available resources
and/or our ability to find funding or strategic partners. Continued investment in each program is under review and we will make determinations
as to which programs to continue based on several strategic factors. In addition, we may choose to partner some or all of these programs
with external parties.
Recent
Development
Definitive
Agreement to acquire BayMedica, Inc.
On
September 13, 2021, we announced the signing of a definitive agreement on September 10, 2021 to acquire BayMedica Inc.
(“BayMedica”), a private company based in the USA that specializes in the manufacture and commercialization of rare
cannabinoids (the “Definitive Agreement”). Closing of the transaction is expected to occur early of the fourth quarter of calendar 2021 and is subject to
certain customary closing conditions. This Definitive Agreement follows on the June 29, 2021 announcement, when we announced the
signing of a non-binding letter of intent (the “LOI”) to acquire BayMedica. Upon closing, we will become a global leader
in the manufacturing of rare cannabinoids, with expertise in three distinct and complementary cannabinoid manufacturing approaches.
Our proprietary cannabinoid manufacturing process, IntegraSyn™, combined with BayMedica’s synthetic biology and chemical
synthesis capabilities, will provide us with complete manufacturing flexibility to select the most appropriate, cost-effective
method based on the target cannabinoid and appropriate quality specifications for the desired market segment. In parallel to
cannabinoid manufacturing, the combined company will continue to explore the therapeutic potential of cannabinoids and novel
cannabinoid analogs for pharmaceutical drug development, as well as expand commercial sales of rare cannabinoids to the consumer
health and wellness sector.
BayMedica
is a revenue-stage biotechnology company leveraging its significant expertise in synthetic biology and pharmaceutical chemistry to develop
efficient, scalable, and proprietary manufacturing approaches to produce high quality, regulatory-compliant rare cannabinoids for consumer
applications. BayMedica is currently commercializing the rare cannabinoid CBC (cannabichromene) as a B2B supplier to distributors and
manufacturers marketing products in the health and wellness sector. Revenues of BayMedica’s initial rare cannabinoid product, Prodiol®
CBC (cannabichromene), have grown steadily since sales commenced in December 2019, with cumulative revenues in excess of US$2.5M with
revenues growing at an average of approximately 35% quarter on quarter in the 12 months ended June 30, 2021. BayMedica leads the industry
in large batch production of CBC with current batch sizes of more than 200kg and an ability to increase to metric ton quantities as market
demand increases. BayMedica is focused on the wholesale to consumer health and wellness markets, including nutraceuticals, cosmetic,
functional food and beverage, as well as animal health markets. In addition to CBC, BayMedica has several high value non-intoxicating
rare cannabinoids in various stages of commercial manufacturing scale-up including CBDV, THCV, CBGV, CBT and CBN for the health and wellness
markets.
In
November 2020, we entered into a reciprocal Research Collaboration Agreement with BayMedica to explore synergies between their respective
technologies. BayMedica has been assessing specific elements of InMed’s proprietary IntegraSyn™ approach for the production of
cannabinoids. We have initiated preclinical investigation of several compounds selected from BayMedica’s extensive library of proprietary
cannabinoid analogs designed to be developed to treat human disease.
Pursuant
to the indicative terms of the Definitive Agreement, upon closing of the transaction, we will acquire 100% of BayMedica in exchange
for 1.78 million of our common shares and certain warrants, to be issued to BayMedica’s equity and convertible debt holders
with any such issued common shares being subject to a six-month contractual hold period and the warrants being exercisable after six
months. The total number of our common shares to be issued or issuable in the proposed transaction may be reduced in the event that
BayMedica’s net liabilities exceed a negotiated threshold following completion of a financial review of BayMedica’s
closing balance sheet. The Definitive Agreement further provides that 470,000 of our common shares issuable on closing will be held
in escrow, subject to cancellation, to satisfy certain potential post-closing indemnification and other claim(s) that we may have
under the definitive agreement in the six- and twelve-month period following closing of the proposed transaction. BayMedica’s
equity and debt holders would receive Series A warrants to acquire up to 800,000 of our common shares with an exercise price equal
to 125% of the average of the daily volume-weighted average price of the common shares on Nasdaq for the twenty days prior to the
third business day before the closing of the proposed transaction (the “Deal Share Price”) and Series B warrants to
acquire up to 800,000 of our common shares priced at 200% of the Deal Share Price. The closing of the proposed transaction is
subject to various customary closing conditions.
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Manufacturing
The CBN used in
INM-755 and INM-088 is currently sourced from either contract manufacturers or, for smaller quantities, from research material
suppliers, that typically utilize synthetic chemistry. Changes in contract manufacturers or suppliers may require additional
verification of the vendor’s quality systems, compliance, manufacturing process, testing and equivalency to the currently
supplied CBN prior to use. This is intended to be an interim step to enable us to proceed with developing its formulations, execute
preclinical toxicology studies and progress through Phase I and II clinical trials. Thereafter, we may be able to utilize our
IntegraSyn TM system for GMP APIs. Bridging studies consisting of chemical analysis and,
possibly, animal bioavailability studies may be required in order to switch our API from the current external manufacturing sources
to our internal IntegraSyn TM based APIs.
We
expect that the final formulations (API + excipients + packaging) of INM-755 topical cream and the INM-088 eye drop formulation will
be manufactured by contract manufacturers and sub-component fabricators. The contract manufacturers and sub-component fabricators will
be selected based on their specific competencies in manufacturing, quality standards, and materials. FDA regulations require that products
be produced under current cGMP.
Intellectual
Property
A
patent is a monopoly granted by a government for a period of up to 20 years. A patent provides an enforceable legal right to prevent
others from exploiting an invention being a product, device, system, substance, process or method in the country of grant. For an invention
to be patentable, it must be novel, involve an inventive step and useful at the time of filing the initial patent application for that
invention. At 18 months from the initial patent application, the detailed description of the invention is published. In order to secure
patent protection, a patent application is filed with the patent office in each country of interest, the application is considered under
the patent laws of that country, and a patent will issue if the application meets the patentability criteria of that country. After a
patent expires or lapses, anyone can then use the invention.
The
grant of a patent does not guarantee validity and a patent may be challenged by third parties at a patent office by re-examination in
some countries or through the courts by revocation proceedings. The grant of a valid patent does not mean that the invention may be exploited
in a given country without infringing third party intellectual property rights in that country.
The
owner of a patent has the exclusive right to prevent others from making, selling, importing or otherwise using the patented invention
for the life of the patent. Patent infringement occurs when someone makes, hires, uses, imports or sells the patented invention, or a
product made by a patented method, or offers to do these things, within the country covered by the patent without the permission of the
owner of the patent.
Patent
applications and patents are subject to payment of renewal fees over the life of the patent in order to maintain patent rights. If the
renewal fees are not paid then the application or patent may lapse.
Adequate protection of
intellectual property is a means to ensure that we can commercialize our intellectual property and reduce the likelihood of imitation
by competitors. We intend to utilize patents available to protect its IP wherever possible. In addition, we also rely on trade-secrets
and process know-how to protect our intellectual property. While we cannot patent the naturally occurring individual cannabinoids used
in our products, there are a number of other approaches to protect our inventions. These include:
● patents
on individual or combinations of cannabinoids that provide novel methods for treating diseases;
●
cannabinoid delivery technology, formulations designed specifically to increase the safety and efficacy of drug treatments; and
● manufacturing
processes for cannabinoids.
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The patent methodologies
listed above will be designed in a way to thoroughly protect our multi-faceted approach to develop novel cannabinoid medicines. We typically
file patent applications in US, Canada, EU and other selected commercially significant foreign jurisdictions.
As of August 30th, 2021,
we have three patent families covering novel methods for treating diseases, two for our INM-755 program (WO/2017/190249 and WO/2019/056123)
and one for our INM-088 program (PCT/CA2020/050547). If these patents applications are granted and all maintenance fees or annuities are
paid, these patents are expected to expire in 2037-2040. In some situations, the patent may be eligible for adjustment or extension of
the patent terms due to delay in the patent office during the prosecution phase. The expiration date above does not include the adjustments
or extensions.
As of August 30th, 2021,
we have one patent family covering cannabinoid delivery technology for the INM-088 program (WO/2018/205022). If these patents applications
are granted and all maintenance fees or annuities are paid, these patents are expected to expire in 2038. In some situations, the patent
may be eligible for adjustment or extension of the patent terms due to delay in the patent office during the prosecution phase. The expiration
date above does not include the adjustments or extensions.
As of August 30th, 2021,
we have two patent families covering manufacturing process for cannabinoids of interest (WO/2019/046941 and PCT/CA2020/050309). If these
patents applications are granted and all maintenance fees or annuities are paid, these patents are expected to expire in 2038-2040. In
some situations, the patent may be eligible for adjustment or extension of the patent terms due to delay in the patent office during the
prosecution phase. The expiration date above does not include the adjustments or extensions.
The
Patent Cooperation Treaty, or “PCT”, is an international patent law treaty, which provides a unified procedure for filing
patent applications to protect inventions in each of its member states. There are 151 member countries within the PCT, enabling near-global
patent coverage through successful patent prosecution in the U.S., Japan, Europe, Canada, Australia, New Zealand, China, Brazil, Russia,
India and many other countries. We have several filed patent applications currently either in the provisional stage or PCT stage of review
as shown above. None have been granted to date. We retain the full commercial rights to all of these patents with any exceptions noted
in the above table.
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