Promising results from psilocybin trial for treatment-resistant depression —

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  • Researchers at Trinity College Dublin have participated in the largest and most rigorous clinical trial to date of psilocybin (a psychoactive ingredient in magic mushrooms), pointing to the possibility that COMP360 psilocybin with psychological support could be a beneficial therapeutic strategy for people with treatment-resistant depression (TRD).

    Prompted by promising preliminary findings, this funded multi-centre, randomised, double-blind, phase 2b clinical trial was launched in 2018 to determine the safety and potential antidepressant effects of a single dose of COMP360 psilocybin (25mg or 10mg), compared to 1mg, with psychological support in people with TRD. The study was sponsored by COMPASS Pathways, a mental health company based in the UK, who also developed COMP360 — their proprietary formulation of synthetic psilocybin administered in conjunction with psychological support.

    The trial, which included 233 people with TRD across 10 countries, including the Irish site at Tallaght University Hospital showed that patients who received a single dose of 25mg COMP360 psilocybin experienced a highly statistically and clinically significant rapid reduction in symptoms of depression compared to 1mg at 3 weeks (p<0.001). This offers hope that COMP360 psilocybin with psychological support could be an effective antidepressant treatment paradigm for some people with TRD, if proven effective and safe in larger studies. COMPASS Pathways will be running a larger phase 3 programme of COMP360 psilocybin therapy in TRD, which is on schedule to begin in 2022.

    KEY RESEARCH FINDINGS

    • 25mg COMP360 psilocybin with psychological support led to a statistically and clinically significantly reduction in symptoms of depression in people with TRD compared to 1mg at week 3.
    • 37% of people with TRD in the 25mg group met criteria for response at week 3 (≥50% decrease in depressive symptoms).
    • Approximately 30% of people with TRD in the 25mg group met criteria for remission at week 3 (29.1%).
    • 20% of people with TRD in the 25mg group met criteria for sustained response at week 12.
    • COMP360 psilocybin was generally well-tolerated.

    Dr John R. Kelly, Psychiatrist and Clinical Senior Lecturer, Trinity College said:

    “This is the largest and most rigorous clinical trial of psilocybin to date. It shows a promising antidepressant signal for 25mg COMP360 psilocybin with psychological support and has paved the way for phase 3 clinical trials, which will determine whether it translates into a much-needed complementary treatment strategy in the psychiatry clinic.

    We look forward to the phase 3 trial, and to the development of a translational psychedelic science research programme in Trinity College Institute of Neuroscience and Tallaght University Hospital. Ultimately, we hope that this will deliver tangible benefits to patients, the health service and to Irish society.”

    Story Source:

    Materials provided by Trinity College Dublin. ..

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