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Yvan Beaussant

Dana-Farber Cancer Institute, Harvard University

25 papers in the library · 478 citations · publishing 2020-2026

Papers

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Safety and Efficacy of Psilocybin During Anticancer Treatment: A Phase II Trial Secondary Analysis.

Journal of Pain and Symptom Management August 1, 2026 Daniel A. Schaefer, Manish Agrawal, Emanuele Mazzola et al.

CONTEXT Psilocybin-assisted therapy has demonstrated rapid antidepressant effects in patients with cancer, but most trials have excluded individuals receiving active systemic anticancer treatment, limiting safety data in this population. OBJECTIVES To compare the efficacy and safety of psilocybin-assisted therapy in patients receiving versus not receiving concurrent systemic anticancer...

Exploring barriers and opportunities for Black, Indigenous, and People of Color (BIPOC) therapists in psychedelic-assisted therapy: A qualitative study

Journal of Psychedelic Studies March 1, 2026 Yvan Beaussant, Candace Oglesby, Kim Roddy et al.

Abstract Background and aims Psychedelic-assisted therapies (PAT) have emerged as promising treatments for mental health conditions such as depression, anxiety, and trauma-related disorders. However, the underrepresentation of Black, Indigenous, and People of Color (BIPOC) in PAT research and clinical practice limits equitable access and the generalizability of outcomes. This study explored the...

Psilocybin-assisted therapy for demoralisation in hospice patients: feasibility, safety and preliminary efficacy

BMJ Supportive & Palliative Care November 3, 2025 Yvan Beaussant, Zachary Sager, Caitlin W. Brennan et al. 1 citation

Objectives To assess the feasibility, safety and preliminary efficacy of psilocybin-assisted therapy (PAT) for demoralisation in terminally ill patients receiving home hospice care. Methods In this open-label pilot trial, 4607 home hospice patients at a large community hospice were screened over 22 months; 66 were approached, 15 enrolled and 10 received psilocybin. Participants completed two...

“To Have the Encounter with Our Own Finiteness in that Existential Way”: Descriptions of Existential Experience in Patients with Cancer and Major Depression Participating in Psilocybin-Assisted Group Therapy

Psychedelic Medicine October 8, 2025 Elise C. Tarbi, Skye A. Miner, Kabir Nigam et al. 1 citation

Background: Cancer poses an existential threat for patients and caregivers. Psilocybin-assisted therapy (PAT) has emerged as a potential tool to meet these existential needs, yet little is known about how patients describe this element of their cancer journey, and how it might be affected by PAT, especially in the group therapy context. Purpose: To explore how patients with cancer and...

Psilocybin

May 1, 2025 Jessi Humphreys, Lou Lukas, Yvan Beaussant et al.

Abstract Psilocybin, a naturally occurring psychoactive compound found in more than 200 mushroom species, has an enduring history of use in sacred rituals of Indigenous healers worldwide. With selective serotonin receptor binding, activation of the serotonergic neurological system enables psilocybin to potentiate neuroplasticity, enabling individuals to engage in meaning-making from psychedelic...

Ketamine and Ketamine-Assisted Psychotherapy for Psychiatric and Existential Distress in Patients with Serious Medical Illness: A Narrative Review.

Journal of Palliative Medicine January 22, 2025 Roxanne Sholevar, William Kromka, Yvan Beaussant 10 citations

Context: Psychiatric and existential distress are common and difficult-to-treat symptoms that are frequently encountered in the palliative care setting; current treatment options are limited in efficacy and tolerability. Psychedelic-assisted therapies (PAT) have gained public and scientific interest in their potential to induce rapid and effective reductions in psychiatric and existential...

The Interconnection of Psychedelic Spirituality, Social Justice, and BIPOC Therapist Engagement in Psychedelic-Assisted Therapy: Insights from the Psychedelic Therapists Diversity Study

Psychedelic Intersections January 17, 2025 Candace Oglesby, Yvan Beaussant

This paper presents insights from the Psychedelic Therapists Diversity (PTD) study, a qualitative study conducted to understand how BIPOC therapists perceive psychedelic therapy and research. The inciting incident for this research occurred during our collaboration on a clinical trial of psilocybin-assisted therapy for depression in cancer patients.1 Candace Oglesby was the only therapist of...

Set and setting in psilocybin-assisted therapy: A qualitative study of patients with cancer and depression.

General Hospital Psychiatry 2025 Yvan Beaussant, Elise C. Tarbi, Kabir Nigam et al. 3 citations

Psilocybin-assisted therapy (PAT) shows promise for cancer-related depression, yet little research has examined how therapeutic context shapes patient experiences. While set (mindset) and setting (environment) are considered central to psychedelic treatment, empirical evidence on their role in PAT acceptability remains limited. This study explores factors influencing the acceptability of PAT...

Psychedelic-assisted therapy for treating anxiety, depression, and existential distress in people with life-threatening diseases

Cochrane Database of Systematic Reviews September 11, 2024 Sivan Schipper, Kabir Nigam, Yasmin Schmid et al. 34 citations

Implications for practice Psychedelic-assisted therapy with classical psychedelics (psilocybin, LSD) may be effective for treating anxiety, depression, and possibly existential distress, in people facing a life-threatening disease. Psychedelic-assisted therapy seemed to be well tolerated, with no treatment-emergent serious adverse events reported in the studies included in this review. However,...

Older Adults in Psychedelic-Assisted Therapy Trials: A Systematic Review

European Psychiatry April 1, 2024 N. Kabir, B. Anderson, Lisa Bouchet et al. 1 citation

Introduction Growing clinical interest in psychedelic-assisted therapies has led to a second wave of research involving psilocybin, LSD, MDMA and other substances. Data suggests that these compounds have the potential to treat mental health conditions that are especially prevalent in older adults such as depression, anxiety, existential distress and post-traumatic stress disorder. Objectives...

Older adults in psychedelic-assisted therapy trials: A systematic review

Journal of Psychopharmacology 2024 Lisa Bouchet, Zachary Sager, Antoine Yrondi et al. 22 citations

Background: Growing clinical interest in psychedelic-assisted therapies has led to a second wave of research involving psilocybin, lysergic acid diethylamide (LSD), 3,4-methylenedioxymethamphetamine (MDMA) and other substances. Data suggests that these compounds have the potential to treat mental health conditions that are especially prevalent in older adults such as depression, anxiety,...

Psilocybin‐assisted group therapy in patients with cancer diagnosed with a major depressive disorder

Cancer December 18, 2023 Manish Agrawal, Yvan Beaussant, Sarah Shnayder et al. 73 citations

Abstract Background Depression is common in patients with cancer and is associated with lower treatment adherence and reduced quality of life. Antidepressants and psychotherapy have limited success in improving depression among patients with cancer. This study explored the safety, feasibility, and efficacy of psilocybin‐assisted therapy in patients with cancer and major depressive disorder....

Acceptability of psilocybin‐assisted group therapy in patients with cancer and major depressive disorder: Qualitative analysis

Cancer December 18, 2023 Yvan Beaussant, Kabir Nigam, Zachary Sager et al. 22 citations

Abstract Background The present study explored the acceptability of psilocybin‐assisted group therapy from the perspective of patients with cancer and depression who participated in a clinical trial assessing the safety and efficacy of this novel intervention. Methods Guided by the conceptual framework of acceptability, the authors conducted semi‐structured interviews with participants of the...

Disruption as an opportunity or threat: A qualitative analysis of factors influencing the attitudes of experts in serious illness care toward psychedelic-assisted therapies.

Palliative & Supportive Care December 1, 2023 Roxanne Sholevar, John Peteet, Justin J. Sanders et al. 9 citations

Psychedelic-assisted therapies (PAT) are emerging as a promising treatment for psycho-existential distress in patients with serious illness. A recent qualitative analysis of perspectives of 17 experts in serious illness care and/or PAT research identified divergent views on the therapeutic potential and safety of PAT in patients with serious illness. This paper further analyzes the factors that...

Applying Key Lessons from the Hospice and Palliative Care Movement to Inform Psychedelic-Assisted Therapy.

Psychedelic medicine (New Rochelle, N.Y.) September 1, 2023 Megan Miller, William E Rosa, Alden Doerner Rinaldi et al. 9 citations

Psychedelic-assisted therapy (PAT) has re-emerged as a promising intervention for addressing mental health conditions and existential concerns. Despite growing enthusiasm, PAT may be difficult to integrate into mainstream health systems. The rich sacramental traditions of psychedelics, their centering of the human experience, proposed substrates of action, context-dependent outcomes, and highly...

Psychedelics and Related Pharmacotherapies as Integrative Medicine for Older Adults in Palliative Care.

Clinics in geriatric medicine August 1, 2023 Kabir Nigam, Kimberly A Curseen, Yvan Beaussant 3 citations

Psychological distress at the end of life is a common experience that lacks effective treatments. This is in part due to the multidimensional nature of psychological distress at the end of life, encompassing an interplay between psychosocial and existential distress as well as physical symptom burden. Research shows that psychedelic-assisted therapy is an effective treatment of end of life...

Psychedelic/entactogen-assisted therapy for treatment of anxiety, depression and existential distress in adult palliative care

Cochrane Database of Systematic Reviews November 21, 2022 Sivan Schipper, Kabir Nigam, Vanessa Piechotta et al. 4 citations

This is a protocol for a Cochrane Review (intervention). The objectives are as follows: To assess the benefits and harms of psychedelic/entactogen‐assisted therapy compared to placebo or active comparators (e.g. antidepressants) for treatment of anxiety, depression, and existential distress in adult palliative care.

Psychedelic-Assisted Therapies in Patients With Serious Illness: Opportunities and Challenges

Psychiatric Annals September 1, 2022 Michael Ljuslin, Kabir Nigam, Roxanne Sholevar et al. 4 citations

In addition to physical symptoms and treatment burden, people affected by serious illness experience psychological, social, and spiritual distress. Medical professionals who care for them, including psychiatrists and other mental health clinicians, attend to these multiple dimensions of suffering with the hope and promise of improving patients' quality of life. Yet anxiety, depression,...

Top Ten Tips Palliative Care Clinicians Should Know About Psychedelic-Assisted Therapy in the Context of Serious Illness.

Journal of Palliative Medicine August 1, 2022 William E Rosa, Zachary Sager, Megan Miller et al. 49 citations

Psychedelic-assisted therapy (PAT) is a burgeoning treatment with growing interest across a variety of settings and disciplines. Empirical evidence supports PAT as a novel therapeutic approach that provides safe and effective treatment for people suffering from a variety of diagnoses, including treatment-resistant depression, substance use disorder, and post-traumatic stress disorder. Within...

The Therapeutic Potential of Psychedelic-assisted Therapies for Symptom Control in Patients Diagnosed With Serious Illness: A Systematic Review

Journal of Pain and Symptom Management February 11, 2022 Lucas Oliveira Maia, Yvan Beaussant, Ana Cláudia Mesquita Garcia 59 citations

ContextPeople affected by serious illness usually experience suffering in its various dimensions, not only in the physical but also in the psychosocial and spiritual aspects. The interest in psychedelic-assisted therapies as a potential new therapeutic modality has increased since evidence suggests a significant impact of their use on the outcomes of patients with serious illness.ObjectivesTo...

Psychedelic Knowledge and Opinions in Psychiatrists at Two Professional Conferences: An Exploratory Survey

Journal of Psychoactive Drugs August 19, 2021 Brian S. Barnett, Yvan Beaussant, Franklin King et al. 64 citations

Despite resurgent interest in psychedelic-assisted therapy, our insights into psychiatrists' knowledge and opinions about medicinal psychedelic applications are surprisingly narrow. Therefore, we anonymously surveyed psychiatrists attending psychedelic didactic presentations at two national meetings about these issues using a 26-item questionnaire. Response rate was 40.20% (106/264)....

Mapping an Agenda for Psychedelic-Assisted Therapy Research in Patients with Serious Illness.

J Palliat Med April 13, 2021 Yvan Beaussant, James A. Tulsky, Benjamin Guérin et al. 34 citations

Background: With support from the Radcliffe Institute for Advanced Study at Harvard University, we convened researchers representing palliative care, psychosocial oncology, spiritual care, oncology, and psychedelic-assisted therapies. We aimed to define priorities and envision an agenda for future research on psychedelic-assisted therapies in patients with serious illness. Over two days in...

Mapping an Agenda for Psychedelic-Assisted Therapy Research in Patients with Serious Illness.

J Palliat Med April 13, 2021 Yvan Beaussant, James A. Tulsky, Benjamin Guérin et al. 34 citations

Background: With support from the Radcliffe Institute for Advanced Study at Harvard University, we convened researchers representing palliative care, psychosocial oncology, spiritual care, oncology, and psychedelic-assisted therapies. We aimed to define priorities and envision an agenda for future research on psychedelic-assisted therapies in patients with serious illness. Over two days in...

Defining the Roles and Research Priorities for Psychedelic-Assisted Therapies in Patients with Serious Illness: Expert Clinicians' and Investigators' Perspectives

Journal of Palliative Medicine April 1, 2020 Yvan Beaussant, Justin J. Sanders, Zachary Sager et al. 39 citations

Background: Recent and preprohibition studies show that patients with serious illness might benefit from psychedelic-assisted therapies for a range of symptoms, physical, psychosocial, and existential. Objective: To explore the potential roles and research priorities of these therapies in patients with serious illness. Design, Setting, and Participants: Qualitative study based on semistructured...