Deuterated tryptamine derivatives and methods of use

Helus Pharma is the commercial operating name of Cybin Inc., a clinical-stage biopharmaceutical company developing proprietary Novel Serotonergic Agonists (NSAs) — synthetic deuterated molecules designed to activate serotonin pathways and promote neuroplasticity. Operating across Canada, the US, UK, and Ireland, Helus holds over 100 granted patents and 250+ pending applications across its NSA portfolio. Its lead asset, HLP003 (formerly CYB003, a deuterated psilocin analogue), has received FDA Breakthrough Therapy Designation for the adjunctive treatment of major depressive disorder and is in two concurrent Phase 3 trials: APPROACH™ (topline data Q4 2026) and EMBRACE™. A key differentiator is its adjunctive design — allowing patients to continue background antidepressant medications without washout. HLP004 (a deuterated DMT analogue for intramuscular use) posted encouraging Phase 2 topline results in GAD in March 2026: 10.4-point HAM-A reduction at 6 weeks, 67% responders at 6 months, and an ~90-minute in-clinic session window. US composition-of-matter patent coverage through at least 2041.