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Research, Drug Development & ManufacturingCompany-Led Drug Development & Commercialization
Lead program: Phase III

Transcend Therapeutics

220 5th Avenue, New York, NY, USA, United States
1 Drug Candidate

Transcend Therapeutics is a private, New York-based clinical-stage company developing TSND-201 (methylone), a rapid-acting neuroplastogen for PTSD and other neuropsychiatric conditions. Founded in 2021 by Blake Mandell (CEO), Kevin Ryan (AlleyCorp), and Dr. Benjamin Kelmendi (Yale), the company raised $41.5M from investors including the US Department of Defense. TSND-201 is non-hallucinogenic (no 5-HT2A activity) and requires no structured psychotherapy. Its Phase 2 IMPACT-1 trial met the primary endpoint (March 2025, published JAMA Psychiatry Feb 2026) and the FDA granted Breakthrough Therapy Designation in July 2025. Phase 3 programme is planned for 2026.

Development Programmes

1

TSND-201 (Methylone)

Phase III
PTSD

Post-traumatic stress disorder

Programme Tracker

PTSD

Primary: US (FDA)
Phase IIIActive

Phase 3 recruitment underway (early 2026); Otsuka acquisition announced March 2026

Milestones

Phase II topline

Completed

Actual: Mar 1, 2025

IMPACT-1 Phase 2 positive topline results: CAPS-5 −8.00 (Day 10), −9.64 (Day 64); response 57.1% vs 19.2% placebo; remission 32.1% vs 11.5%; loss of PTSD diagnosis 60.7% vs 30.8%; no hallucinations; NCT05741710

Why it matters: TSND-201 is methylone (bk-MDMA) — a monoamine reuptake inhibitor/releaser distinct from MDMA. Unlike MDMA, it lacks serotonin syndrome risk and cardiovascular concerns. IMPACT-1 showed large, durable effect sizes published in JAMA Psychiatry (February 2026) — the first positive RCT of a synthetic entactogen for PTSD in a leading psychiatric journal.

Watch next: Phase 3 primary endpoint readout; NDA timeline under Otsuka

Regulatory review accepted

Completed

Actual: Jul 1, 2025

FDA Breakthrough Therapy Designation (BTD) granted for PTSD

Why it matters: BTD accelerates FDA development and review. Combined with the JAMA Psychiatry publication and Phase 3 initiation, BTD positions TSND-201 as the leading non-MDMA psychedelic-adjacent PTSD candidate.

Funding milestone

Completed

Actual: Mar 27, 2026

Otsuka Pharmaceutical announces acquisition of Transcend for $700M upfront + $525M milestones ($1.225B total); expected close Q2 2026

Why it matters: Otsuka's $1.225B acquisition is the largest psychedelic/entactogen company acquisition to date, confirming Big Pharma confidence in the PTSD drug-assisted therapy space and providing Transcend full commercial and regulatory resources to execute Phase 3.

Watch next: Acquisition close Q2 2026; Phase 3 interim analysis results

Recorded Events

Mar 27, 2026: Funding milestone

Jul 1, 2025: Regulatory review accepted

Mar 1, 2025: Phase II topline

Evidence Links

Quick Facts

Type
Private Biotech
Founded
2021
Lead Stage
Phase III
HQ
220 5th Avenue, New York, NY, USA, United States
Website
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