Medical Information Only. Always consult your healthcare provider before enrolling in any clinical trial.
Two Doses of Psilocybin for the Treatment of MDD in Adults With Cancer
NCT05947383 · View on ClinicalTrials.gov ↗
Study Summary
This is a Phase 2, single-center study to explore the efficacy, safety, and tolerability of up to two 25-mg doses of psilocybin administered at an interval of 9 to 10 weeks in patients with MDD and cancer. This two-part study will administer a fixed dose (25 mg) of psilocybin in a double-blind, randomized, placebo-controlled portion (Dosing Session 1) and subsequently allow rollover into an open-label portion (Dosing Session 2; fixed dose of psilocybin, 25 mg) for patients who do not achieve remission of MDD symptoms after the first dose. In Dosing Session 1, groups of two to four patients will be randomized, as a cohort, to receive either psilocybin 25 mg or niacin 100 mg (active placebo) in a group session, with each patient supported by their dedicated study therapist and monitored by a second therapist via video feed. In Dosing Session 2, all eligible participants (i.e., patients who have not achieved remission defined as MADRS \< 10 at V7) will receive psilocybin 25 mg in an open-label fashion using the group session model. The study population will include adult men and women who are 18 years of age or older and have diagnoses of both MDD and a malignant neoplasm. MDD is defined as the Diagnostic and Statistical Manual of Mental Disorders, 5th edition (DSM-5) diagnostic criteria for a single or recurrent episode of MDD without psychotic features. A diagnosis of a malignant neoplasm is defined as having a diagnostic code from C00 to C97 according to the International Classification of Diseases, 10th edition (ICD-10). Participants will be recruited through referrals from specialized psychiatric and oncology services as well as through patient self-referrals. The majority of participants will have no prior exposure to psilocybin or so-called "magic mushrooms"; however, participants with prior recreational experience with psilocybin or "magic mushrooms" are eligible.
Conditions Studied
Interventions
- DRUG Placebo
- DRUG Psilocybin
Study Locations (1)
Maryland
- Sunstone Medical, PC — Rockville
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 56 participants |
| Start Date | 2023-10-23 |
| Est. Completion | 2026-03-01 |
| Phase | Phase 2 |
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Full Details on ClinicalTrials.gov ↗What the Registry Record Tells You About NCT05947383
The ClinicalTrials.gov registry entry for NCT05947383 describes a study currently listed as recruiting. It is categorized as Phase 2, which is the standard way researchers label where a study sits along the investigational pathway from early safety work through later efficacy and post-marketing evaluation. The registered enrollment target is 56 participants, a figure that helps gauge the scale of data the investigators plan to collect. The listed sponsor is Sunstone Medical, which has 2 total studies on file at ClinicalTrials.gov, and sponsors are the parties responsible for study design, oversight, and regulatory filings.
The record links to 2 conditions, with Cancer appearing as the primary indexed condition, and to 2 interventions — of which Placebo is the first listed. Interventions can include drugs, devices, procedures, behavioral programs, or observational arms, and each is tracked as a separate registry field so that downstream queries can filter accurately. When a trial lists multiple interventions, it usually reflects a multi-arm design or a comparison protocol rather than a single treatment being tested in isolation. The brief summary published in the registry is the clearest source of protocol intent and should be read before drawing conclusions from any sidebar tags.
Geographic footprint matters for practical reasons: NCT05947383 reports 1 study location spanning 1 distinct geographic area — top geographies include Maryland. A larger site network tends to correlate with broader recruitment capacity, but it does not imply anything about study quality, and site-level enrollment status can diverge from the overall registry status shown above. Every data point on this page comes from the public ClinicalTrials.gov dataset and is reproduced here for reference only; it is not a medical recommendation, an endorsement of the sponsor, or an invitation to enroll. Verify current status, eligibility criteria, and contact details directly at ClinicalTrials.gov, and discuss any participation decision with your own healthcare provider.
Frequently Asked Questions
What is clinical trial NCT05947383 about?
NCT05947383 is a clinical study titled "Two Doses of Psilocybin for the Treatment of MDD in Adults With Cancer". This is a Phase 2, single-center study to explore the efficacy, safety, and tolerability of up to two 25-mg doses of psilocybin administered at an interval of 9 to 10 weeks in patients with MDD and cancer. This two-part study will administer a fixed dose (25 mg) of psilocybin in a double-blind, rand...
What is the current status of trial NCT05947383?
This trial is currently recruiting. It is a Phase 2 study. The enrollment target is 56 participants. The study started on 2023-10-23. Estimated completion is 2026-03-01.
What conditions does trial NCT05947383 study?
This clinical trial studies the following conditions: Cancer, Major Depressive Disorder. These conditions were identified from the trial registry and reflect the primary focus areas of the research.
What interventions are being tested in trial NCT05947383?
The interventions under investigation include: Placebo (DRUG), Psilocybin (DRUG). Each intervention is being evaluated for safety and efficacy as part of this clinical study.
Who is sponsoring clinical trial NCT05947383?
This trial is sponsored by Sunstone Medical, which has 2 total clinical trials registered on ClinicalTrials.gov. The sponsor is responsible for the study's design, funding, and regulatory compliance.
Where is trial NCT05947383 being conducted?
This trial has 1 study location across Maryland. Contact the study sites directly through ClinicalTrials.gov for enrollment availability.
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