- PharmaDrug narrows list of candidate tryptamine molecules for the treatment of primary open angle glaucoma (PAOG)
- Terasaki Institute receives PharmaDrug’s two candidate DMT analogue molecules
- Terasaki Institute, initiates supportive IND-enabling mechanism of action studies to evaluate potency and kinetics of PharmaDrug’s DMT analogues
Toronto, Ontario–(Newsfile Corp. – November 5, 2021) – PharmaDrug Inc. (CSE: PHRX) (OTCQB: LMLLF) (“PharmaDrug” or the “Company“), a specialty pharmaceutical company focused on the research, development and commercialization of controlled-substances and natural medicines such as psychedelics, cannabis and naturally-derived approved drugs, is pleased to announce that the Terasaki Institute for Biomedical Innovation (TIBI) has received and will immediately commence in vitro characterization studies on PharmaDrug’s short-list of DMT analogue molecules, which will support IND-enabling studies for FDA review. PharmaDrug has commissioned TIBI, under a research agreement, to develop a novel ocular drug delivery platform that aims to deliver psychedelic and tryptamine-based pharmaceuticals, related to N, N-dimethyltryptamine (“DMT”), for eye diseases.
Daniel Cohen, CEO of PharmaDrug commented, “We are extremely excited to finalize the first stage of the program in devising an initial list and selecting a final set of two candidate DMT analogue molecules. Initial in vitro efficacy studies will commence immediately. The next few months will be vital in characterizing relative drug potency and selecting a single lead candidate to take forward for further development. The following phase will focus on IND enabling efficacy studies using a well accepted animal model of POAG.”
Based on considerations related to physiochemical properties, resistance to metabolic breakdown and anticipated downstream formulation requirements, the Company has elected to specifically focus its efforts on comparing the potency of two candidate tryptamines, which were narrowed from an initial list of six. Studies underway at TIBI will take place in three phases: 1) in vitro, head-to-head evaluation of potency in cell-based models of glaucoma, 2) evaluation of efficacy (ability to lower intraocular pressure “IOP”) when applied as a topical eyedrop in animal models of glaucoma, and 3) development and testing of a medical device capable of delivering sustained, local, sub-psychotropic levels of the development candidate to patients afflicted with glaucoma. The Company expects to provide an update on initial research results late November.
Glaucoma is a disorder of the optic nerve that results in irreversible vision loss and is the second leading cause of blindness in the world, according to the World Health Organization. Glaucoma impacts more than 2.7 million people aged 40 or older in the United States and current treatments are known to have poor rates of compliance of up to 80% of patients. The global market for glaucoma was estimated by Market Scope at $4.8 billion in 2019 with the U.S. market representing $1.9 billion.
Although the exact etiology of primary open angle glaucoma remains poorly understood, and may be variable across patient subsets, it is generally accepted that the observed increase in intraocular pressure (IOP) correlates with progressive vision loss1. Current treatments for POAG primarily consist of eyedrops that can be grouped into three main categories: prostaglandin analogues, carbonic anhydrous inhibitors, and alpha-2 agonists. While these approaches usually provide partial improvement, they often result in side effects such as redness and stinging and require multiple daily applications; all of which diminish patient compliance. Tryptamines are thought to work in a completely distinct way to lower IOP and as such potentially embody a new class of glaucoma medications that may be used alone, or in combination with already approved medications. The Company’s streamlined focus on two highly promising, undisclosed tryptamines as a potential therapeutic solution in treating glaucoma represents a potential paradigm shift.
Modulating the serotonin receptor pathway to improve glaucoma outcomes
Key regions of the eye that regulate fluid dynamics, including maintenance of healthy IOP, are known to be richly decorated with various serotonin receptor family members. Previous research has highlighted the role of serotonin receptor signaling in the regulation of IOP2-5. Tryptamines, often hallucinogenic above certain threshold concentrations, constitute a large collection of molecules that selectively act on multiple different serotonin receptors including 5-HT1A and 5-HT2A. Topical application of several different tryptamines have shown early promise in preclinical models of elevated IOP, however formulation, delivery, the potential for undesirable hallucinogenic side effects, and the controlled substances act of 1970 have all contributed to a lack of development of tryptamines to treat this serious threat to vision.
The Terasaki Institute for Biomedical Innovation is a biotechnology institute which develops medical devices and cutting-edge protocols for a variety of diagnostic, monitoring and treatment applications. Their research platforms include work in biomaterials, cellular and tissue engineering, wearable biosensors and organs-on-a-chip, with specific expertise in novel polymer development.
About PharmaDrug Inc.
PharmaDrug is a specialty pharmaceutical company focused on the research, development and commercialization of controlled-substances and natural medicines such as psychedelics, cannabis and naturally-derived approved drugs. PharmaDrug owns 100% of Pharmadrug Production GmbH (“Pharmadrug Production”), a German medical cannabis distributor, with a Schedule I European Union narcotics license and German EuGMP certification allowing for the importation and distribution of medical cannabis to pharmacies in Germany and throughout the European Union. PharmaDrug recently acquired Sairiyo Therapeutics (“Sairiyo”), a biotech company that specializes in researching and reformulating established natural medicines with a goal of bringing them through clinical trials and the associated regulatory approval process in the US and Europe. Sairiyo is currently developing its patented reformulation of cepharanthine, a drug that has shown substantial third party validated potential for the treatment of Covid-19 and rare cancers. Sairiyo is also conducting R&D in the psychedelics space for the treatment of non-neuropsychiatric conditions. The Company also owns 100% of Super Smart, a company building a vertically integrated retail business with the goal to elevate the use of functional mushrooms, and psilocybin mushrooms where federally legal, as natural based medicines.
For further information, please contact:
Daniel Cohen, Chairman and CEO
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- Weinreb RN, Leung CK, Crowston JG, Medeiros FA, Friedman DS, Wiggs JL, Martin KR. Primary open-angle glaucoma. Nat Rev Dis Primers. 2016 Sep 22;2:16067. doi: 10.1038/nrdp.2016.67. PMID: 27654570.
- May JA, McLaughlin MA, Sharif NA, Hellberg MR, Dean TR. Evaluation of the ocular hypotensive response of serotonin 5-HT1A and 5-HT2 receptor ligands in conscious ocular hypertensive cynomolgus monkeys. J Pharmacol Exp Ther. 2003 Jul;306(1):301-9. doi: 10.1124/jpet.103.049528. Epub 2003 Apr 3. PMID: 12676887.
- Sharif NA. Serotonin-2 receptor agonists as novel ocular hypotensive agents and their cellular and molecular mechanisms of action. Curr Drug Targets. 2010 Aug;11(8):978-93. doi: 10.2174/138945010791591278. PMID: 20426763.
- Najam A Sharif & Jesse A May (2011) Potential for serotonergic agents to treat elevated intraocular pressure and glaucoma: focus on 5-HT2 receptor agonists, Expert Review of Ophthalmology, 6:1, 105-120, DOI: 10.1586/eop.10.69
- Sharif NA, McLaughlin MA, Kelly CR. AL-34662: a potent, selective, and efficacious ocular hypotensive serotonin-2 receptor agonist. J Ocul Pharmacol Ther. 2007 Feb;23(1):1-13. doi: 10.1089/jop.2006.0093. PMID: 17341144.
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