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Pasithea Therapeutics Corp. (Nasdaq: KTTA) (Pasithea or the Company), a biotechnology company focused on the discovery, research, and development of new and effective treatments for psychiatric and neurological disorders, announced positive results from a preclinical proof of concept study of PAS002, its tolerizing vaccine program in multiple sclerosis (MS).

Earlier this year, a study in Nature, the world’s leading science journal, showed that a molecule called GlialCAM found in the brain’s white matter is attacked in MS. GlialCAM shares a component of its protein structure that mimics an identical component of the Epstein Barr Virus (“EBV”) Nuclear Antigen-1, which plays a critical role in triggering MS. In this proof-of-concept study, relapsing paralysis was established in a mouse model of relapsing-remitting experimental autoimmune encephalomyelitis (“EAE”), the standard animal model of MS. In three groups, a proprietary DNA cassette was engineered to encode GlialCAM and injected to potentially block acute disease and its relapse. These DNA molecules were designed to protect against paralytic disease by tolerizing the immune system so it would not attack myelin in the brain and spinal cord. The engineered DNA molecule creates tolerance, working like an inverse vaccine, and was administered intra-muscularly at days 0, 3, 7, 10, and 14. The study had a standard duration of 32 days.

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