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Psychopharmacologic Drugs Advisory Committee Meeting on Midomafetamine (MDMA) for PTSD: Discussion and Votes

FDA advisory committee on MDMA, 2024

The transcript of the FDA advisory committee that reviewed Lykos Therapeutics' application for MDMA-assisted therapy for post-traumatic stress disorder. Hosted here are the chair's opening of the committee questions and the two votes: 2 to 9 against finding the drug effective, and 1 to 10 against finding that its benefits outweighed its risks, with each member's stated reasons. Members cited functional unblinding, expectation bias, the many trial participants who had used MDMA before, and reports of misconduct. The FDA declined to approve the application in August 2024.

Psychedelic Drugs: Considerations for Clinical Investigations (Guidance for Industry)

FDA Psychedelic Drugs Guidance

Considerations for Clinical Investigations (Guidance for Industry)

FDA guidance (July 2026) for sponsors developing psychedelics—5-HT2A agonists including psilocybin and LSD, plus MDMA—as approved medicines. It addresses the regulatory pathway for Schedule I drugs in clinical trials and identifies methodological challenges: perceptual effects complicate blinding ('functional unblinding'), and the independent contribution of psychotherapy paired with dosing remains uncharacterized.