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FDA Rejects Lykos Therapeutics' PTSD Drug, Requests Further Trials

FDA rejects Lykos Therapeutics' PTSD drug application, requests additional Phase III trial.

Mrudula Kulkarni
By Mrudula Kulkarni
Managing Editor - Pharma Now
Aug 12, 2024Updated Jun 26, 2025 · 2 min read
FDA Rejects Lykos Therapeutics' PTSD Drug, Requests Further Trials
https://www.biopharma-reporter.com/Article/2018/06/05/US-FDA-rejects-another-Herceptin-biosimilar-Amgen-issued-CRL
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Reviewed by Mrudula Kulkarni, Managing Editor - Pharma Now

The US Food and Drug Administration (FDA) has released a comprehensive response letter (CRL) on the new drug application (NDA) that US hallucinogenic medicine company Lykos Therapeutics filed for midomafetamine capsules to treat adults with post-traumatic stress disorder (PTSD).

Given that the Psychopharmacologic Drugs Advisory Committee (PDAC) voted two to nine against MDMA-assisted therapy for PTSD on June 4, raising concerns regarding safety, cardiovascular risks, and problems with functional unblinding in trial settings, the news is not surprising.

After reviewing the NDA, the FDA informed the public that it could not be authorised based on the evidence that had been presented up to that point. The FDA has asked Lykos to carry out an extra Phase III trial in order to investigate the safety and efficacy of midomafetamine.

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Mrudula Kulkarni
Written by
Mrudula Kulkarni
Managing Editor - Pharma Now

My international experience as a researcher in Taiwan for three years has equipped me with a global perspective, enabling me to create content that resonates with an international audience.



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