A Second Psilocybin Group Therapy for the Treatment of Cancer-Related Anxiety in Partial Responders With Metastatic Cancer

This Phase I interventional trial (n=16) will evaluate the safety, tolerability, and efficacy of a second psilocybin-assisted group therapy session in treating anxiety and distress in patients with metastatic cancer who had a partial response to their first retreat.

Conducted by the University of Washington, the study aims to assess whether a second psilocybin session can further alleviate anxiety in this patient population.

Participants will receive psilocybin orally on day 0, with an optional booster dose. They will attend individual and group preparation sessions before dosing and integration visits afterward. The primary outcome will measure the incidence of adverse events, while secondary outcomes will track changes in anxiety and depression using the Hospital Anxiety and Depression Scale (HADS). Follow-up assessments will occur at 2, 3, and 6 months post-treatment.

Trial Details



Trial Number

Sponsors & Collaborators

University of Washington in Seattle
Research into the therapeutic potential of psychedelics is underway at Washington State University.

Data attribution

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