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David Feifel

10 papers in the library · 1,533 citations · publishing 2021-2026

Papers

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The role of therapeutic alliance in psilocybin treatment for treatment-resistant depression: A post hoc path analysis.

Journal of Affective Disorders August 1, 2026 Guy M. Goodwin, Scott T Aaronson, Oscar Alvarez et al. 2 citations

The contribution of patient support to psilocybin's antidepressant effects remains uncertain. Relationships between therapeutic alliance (Scale to Assess Therapeutic Relationship-Patient version; STAR-P), psychedelic experience (Five-Dimensional Altered States of Consciousness Questionnaire and Emotional Breakthrough Inventory; 5D-ASC and EBI) and clinical outcomes (Montgomery-Åsberg Depression...

Interdisciplinary, Delphi-driven consensus guidelines on the use of intravenous ketamine infusions for depressive disorders from the American Society of Ketamine Physicians, Psychotherapists, and Practitioners (ASKP3).

J Affect Disord May 16, 2026 David S. Mathai, Madeleine Cluck, Amna M. Aslam et al. 1 citation

Interdisciplinary, Delphi-driven consensus guidelines on the use of intravenous ketamine infusions for depressive disorders from the American Society of Ketamine Physicians, Psychotherapists, and Practitioners (ASKP3).

Challenges with clinical trial participants in studies with classical psychedelics: A position statement from the National Network of Depression Centers' task group on psychedelics and related compounds.

Journal of psychopharmacology (Oxford, England) February 5, 2026 Benjamin R. Lewis, Matthew J Reid, Andrew M Novick et al.

Classical psychedelics-a broad class of compounds that include psilocybin, lysergic acid diethylamide, dimethyltryptamine, and mescaline-have shown significant promise for the treatment of mental health conditions in recent clinical trials. Organizations such as the National Network of Depression Centers (NNDCs) can play a pivotal role in uniting researchers and clinicians working in this field...

Corrigendum to "The role of the psychedelic experience in psilocybin treatment for treatment-resistant depression" [Journal of Affective Disorders, Volume 372 (2025), Pages 523-532].

J Affect Disord October 10, 2025 Guy M. Goodwin, Scott T Aaronson, Oscar Alvarez et al. correction

Corrigendum to "The role of the psychedelic experience in psilocybin treatment for treatment-resistant depression" [Journal of Affective Disorders, Volume 372 (2025), Pages 523-532].

Results From a Long-Term Observational Follow-Up Study of a Single Dose of Psilocybin for a Treatment-Resistant Episode of Major Depressive Disorder.

The Journal of Clinical Psychiatry March 3, 2025 Guy M. Goodwin, Ania Nowakowska, Merve Atli et al. 14 citations

Background: The largest randomized study of psilocybin to date demonstrated the efficacy of COMP360 25 mg (Compass Pathways' investigational proprietary pharmaceutical-grade synthesized psilocybin formulation) in participants with treatment-resistant depression (COMP 001), compared with 10 mg and 1 mg doses. Here, we report findings from COMP 004, a 52-week observational follow-up of patients...

The role of the psychedelic experience in psilocybin treatment for treatment-resistant depression.

Journal of Affective Disorders March 1, 2025 Guy M. Goodwin, Scott T Aaronson, Oscar Alvarez et al. 35 citations

To determine the relationships between psilocybin dose, psychedelic experiences, and therapeutic outcome in treatment-resistant depression. For treatment-resistant depression, 233 participants received a single dose of 25, 10, or 1 mg of COMP360 psilocybin (a proprietary, pharmaceutical-grade synthesized psilocybin formulation, developed by the sponsor, Compass Pathfinder Ltd.) with...

Psilocybin for treatment resistant depression in patients taking a concomitant SSRI medication.

Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology September 1, 2023 Guy M. Goodwin, Megan Croal, David Feifel et al. 166 citations

Psilocybin is being investigated as a treatment in adults with treatment-resistant depression (TRD). Withdrawal from serotonergic antidepressant drugs is a common prerequisite for taking part in trials of psilocybin due to the possibility of ongoing antidepressant drugs altering the psychedelic effect. This phase II, exploratory, international, fixed-dose, open-label study explored the safety,...

Single-dose psilocybin for a treatment-resistant episode of major depression: Impact on patient-reported depression severity, anxiety, function, and quality of life

Journal of Affective Disorders February 3, 2023 Guy M. Goodwin, Scott T Aaronson, Oscar Alvarez et al. 168 citations

Three weeks after dosing, psilocybin 25 mg and, to a lesser degree, 10 mg improved measures of patient-reported depression severity, anxiety, affect, and functioning. These results extend the primary findings from the largest randomised clinical trial of psilocybin for TRD to examine other outcomes that are of importance to patients.

Single-Dose Psilocybin for a Treatment-Resistant Episode of Major Depression.

The New England journal of medicine November 3, 2022 Guy M. Goodwin, Scott T Aaronson, Oscar Alvarez et al. 1,095 citations

Psilocybin is being studied for use in treatment-resistant depression. In this phase 2 double-blind trial, we randomly assigned adults with treatment-resistant depression to receive a single dose of a proprietary, synthetic formulation of psilocybin at a dose of 25 mg, 10 mg, or 1 mg (control), along with psychological support. The primary end point was the change from baseline to week 3 in the...

A longitudinal case series of IM ketamine for patients with severe and enduring eating disorders and comorbid treatment‐resistant depression

Clinical Case Reports April 4, 2021 Terry Schwartz, Mary Ellen Trunko, David Feifel et al. 52 citations

Abstract Severe and enduring eating disorders (EDs) have the highest mortality rate of all psychiatric illnesses (Arch Gen Psychiatry, 2011, 68 , 724), especially when comorbid with treatment‐resistant depression (TRD) (Psychiatr Res, 2016, 244 , 45). We report on four patients with enduring EDs and TRD treated with repeat ketamine over 12 + months, showing improvement in depression with only...