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Modifying Informed Consent to Help Address Functional Unmasking in Psychedelic Clinical Trials
Michelle Matvey1, D Parker Kelley1,2, Ellen R Bradley1,3
1Department of Psychiatry and Behavioral Sciences, Weill Institute for Neurosciences, University of California, San Francisco.
JAMA Psychiatry
|January 8, 2025
Summary
Modifying informed consent in psychedelic trials may improve study masking but carries ethical risks. Careful implementation is needed to balance scientific rigor with participant safety in psychedelic research.
Area of Science:
- Psychopharmacology
- Clinical Trial Methodology
- Neuroscience
Background:
- Growing interest in psychedelic therapeutics for psychiatric disorders.
- Challenges in blinding participants in psychedelic clinical trials due to drug effects.
- Ineffective masking can bias study outcomes and complicate efficacy assessments.
Purpose of the Study:
- To explore modifying informed consent procedures to improve participant blinding in psychedelic trials.
- To investigate the use and ethical implications of altered informed consent in psychedelic research.
- To address the methodological challenge of ineffective masking in psychedelic drug development.
Main Methods:
- Review of contemporary (2000-2024) clinical trials involving psychedelic or methylenedioxymethamphetamine (MDMA) therapy.
- Correspondence with trial investigators to gather data on informed consent modifications.
- Analysis of ethical risks and regulatory considerations associated with modified informed consent.
Main Results:
- Modifications to informed consent have been used in several psychedelic trials to enhance masking.
- This approach presents significant ethical challenges and risks to participants.
- Examples of modifications, regulatory context, and risk mitigation strategies were examined.
Conclusions:
- Modified informed consent may improve the interpretability of psychedelic clinical trials.
- The effectiveness and appropriateness of modified consent require further testing.
- Mitigation strategies and careful consideration of ethical risks are crucial for implementing modified informed consent in psychedelic research.
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