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Berra Yazar-Klosinski

Multidisciplinary Association for Psychedelic Studies, Public Service Electric and Gas (United States)

32 papers in the library · 5,738 citations · publishing 2013-2026

Papers

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Brain-targeted epigenetic effects of two emerging psychoplastogens: ketamine & MDMA

Translational Psychiatry July 11, 2026 Moira G. Semple, Sarah E. Mennenga, Ryan Smith et al.

Psychoplastogen compounds such as ketamine and MDMA have shown therapeutic promise for mood and trauma-related disorders, yet the molecular mechanisms underlying their effects remain poorly understood. Here, we applied a Brain-Epigenome-Wide Association Study (BEWAS) targeting brain-relevant genes to examine DNA methylation changes following treatment. Pre- and post-treatment blood (ketamine, N...

Brain-epigenome wide association study (BEWAS) on the effects of two emerging psychedelics: ketamine & MDMA

bioRxiv Preprint Server July 3, 2025 Moira G. Semple, Sarah E. Mennenga, Ryan Smith et al. 1 citation preprint

Psychedelic compounds such as ketamine and MDMA have shown therapeutic promise for mood and trauma-related disorders, yet their molecular mechanisms remain unclear. This study applied a Brain-Epigenome-Wide Association Study (BEWAS) to assess DNA methylation changes in brain-enriched genes following treatment. Pre- and post-treatment blood (ketamine, N = 20) and saliva (MDMA, N = 16) samples...

MDMA pharmacokinetics: A population and physiologically based pharmacokinetics model-informed analysis.

CPT: Pharmacometrics & Systems Pharmacology February 1, 2025 Marilyn A. Huestis, William B Smith, Cathrine Leonowens et al. 3 citations

Midomafetamine (3,4-methylenedioxymethamphetamine [MDMA]) is under the U.S. Food and Drug Administration review for treatment of post-traumatic stress disorder in adults. MDMA is metabolized by CYP2D6 and is a strong inhibitor of CYP2D6, as well as a weak inhibitor of renal transporters MATE1, OCT1, and OCT2. A pharmacokinetic phase I study was conducted to evaluate the effects of food on MDMA...

DOI: 10.1002/psp4.13282 (opens in new tab) Full text (opens in new tab) MDMA Therapy Psychedelic medicine PTSD Treatment Drug metabolism +1

Author Correction: MDMA-assisted therapy for moderate to severe PTSD: a randomized, placebo-controlled phase 3 trial.

Nature Medicine November 1, 2024 Jennifer Mitchell, Marcela Ot’alora G., Bessel Van der Kolk et al. 4 citations

In the version of the article initially published, some members of the MAPP2 Study Collaborator Group were listed only in the Supplementary Information. Charlotte Harrison, Berra Yazar-Klosinski, Wael Garas, Darrick May, Cole Marta, Susan Walker, Elizabeth Nielson, Gregory Wells, Randall Brown, Revital Amiaz, Yair Wallach, Ray Worthy, Alia Lilienstein and Amy Emerson have now been added to the...

Effects of MDMA-assisted therapy for PTSD on self-experience

PLoS One January 10, 2024 Rachel Yehuda, Leah Bedrosian, Charlotte Harrison et al. 52 citations

Introduction There is a resurgence of interest in the therapeutic potential of psychedelic substances such as 3,4-methylenedioxymethamphetamine (MDMA). Primary findings from our randomized, double-blind, placebo-controlled, multi-site Phase 3 clinical trial of participants with severe PTSD (NCT03537014) showed that MDMA-assisted therapy induced significant attenuation in the...

MDMA-assisted therapy for moderate to severe PTSD: a randomized, placebo-controlled phase 3 trial.

Nature Medicine October 1, 2023 Jennifer Mitchell, Marcela Ot’alora G., Bessel Van der Kolk et al. 400 citations

This multi-site, randomized, double-blind, confirmatory phase 3 study evaluated the efficacy and safety of 3,4-methylenedioxymethamphetamine-assisted therapy (MDMA-AT) versus placebo with identical therapy in participants with moderate to severe post-traumatic stress disorder (PTSD). Changes in Clinician-Administered PTSD Scale for DSM-5 (CAPS-5) total severity score (primary endpoint) and...

MDMA-assisted therapy for moderate to severe PTSD: a randomized, placebo-controlled phase 3 trial.

Nature Medicine October 1, 2023 Jennifer Mitchell, Marcela Ot’alora G., Bessel Van der Kolk et al. 400 citations

This multi-site, randomized, double-blind, confirmatory phase 3 study evaluated the efficacy and safety of 3,4-methylenedioxymethamphetamine-assisted therapy (MDMA-AT) versus placebo with identical therapy in participants with moderate to severe post-traumatic stress disorder (PTSD). Changes in Clinician-Administered PTSD Scale for DSM-5 (CAPS-5) total severity score (primary endpoint) and...

MDMA-Assisted Therapy for Severe PTSD: A Randomized, Double-Blind, Placebo-Controlled Phase 3 Study.

FOCUS: The Journal of Lifelong Learning in Psychiatry July 1, 2023 Jennifer Mitchell, Michael P. Bogenschutz, Alia Lilienstein et al. 97 citations

Post-traumatic stress disorder (PTSD) presents a major public health problem for which currently available treatments are modestly effective. We report the findings of a randomized, double-blind, placebo-controlled, multi-site phase 3 clinical trial (NCT03537014) to test the efficacy and safety of 3,4-methylenedioxymethamphetamine (MDMA)-assisted therapy for the treatment of patients with...

Breakthrough for Trauma Treatment: Safety and Efficacy of MDMA-Assisted Psychotherapy Compared to Paroxetine and Sertraline.

FOCUS: The Journal of Lifelong Learning in Psychiatry July 1, 2023 Allison A. Feduccia, Lisa Jerome, Berra Yazar-Klosinski et al. 24 citations

Unsuccessfully treated posttraumatic stress disorder (PTSD) is a serious and life-threatening disorder. Two medications, paroxetine hydrochloride and sertraline hydrochloride, are approved treatments for PTSD by the Food and Drug Administration (FDA). Analyses of pharmacotherapies for PTSD found only small to moderate effects when compared with placebo. The Multidisciplinary Association for...

Pilot study suggests DNA methylation of the glucocorticoid receptor gene (NR3C1) is associated with MDMA-assisted therapy treatment response for severe PTSD

Frontiers in Psychiatry February 6, 2023 Candace R. Lewis, Joseph Tafur, Sophie Spencer et al. 29 citations

BackgroundPrevious research has demonstrated that epigenetic changes in specific hypothalamic-pituitary-adrenal (HPA) genes may predict successful psychotherapy in post-traumatic stress disorder (PTSD). A recent Phase 3 clinical trial reported high efficacy of 3,4-methylenedioxymethamphetamine (MDMA)-assisted therapy for treating patients with severe PTSD compared to a therapy with placebo...

MDMA-assisted therapy is associated with a reduction in chronic pain among people with post-traumatic stress disorder

Frontiers in Psychiatry November 3, 2022 Devon Christie, Berra Yazar-Klosinski, Ekaterina Nosova et al. 8 citations

IntroductionIncreasing evidence demonstrates 3,4-methylenedioxymethamphetamine (MDMA)-assisted therapy (MDMA-AT) may be a safe and effective treatment for post-traumatic stress disorder (PTSD). There is growing interest in MDMA-AT to address a range of other health challenges. Chronic pain and PTSD are frequently comorbid, reciprocally interdependent conditions, though the possible role of...

Altered brain activity and functional connectivity after MDMA-assisted therapy for post-traumatic stress disorder.

Frontiers in Psychiatry 2022 S Parker Singleton, Julie B. Wang, Michael C Mithoefer et al. 36 citations

3,4-methylenedioxymethamphetamine-assisted therapy (MDMA-AT) for post-traumatic stress disorder (PTSD) has demonstrated promise in multiple clinical trials. MDMA is hypothesized to facilitate the therapeutic process, in part, by decreasing fear response during fear memory processing while increasing extinction learning. The acute administration of MDMA in healthy controls modifies recruitment...

DOI: 10.3389/fpsyt.2022.947622 (opens in new tab) Full text (opens in new tab) Amygdala FMRI Functional connectivity Hippocampus +9

Fully Validated, Multi-Kilogram cGMP Synthesis of MDMA

ACS Omega December 20, 2021 Jay B. Nair, Linda B Hakes, Berra Yazar-Klosinski et al. 12 citations

MDMA is increasingly used in clinical research, but no cGMP process has yet been reported. We describe here the first fully validated cGMP synthesis of up to 5 kg (≈30 000 patient doses) of MDMA in a four-step process beginning with a noncontrolled starting material. The overall yield was acceptable (41-53%, over four steps), and the chemical purity of the final product was excellent, exceeding...

DOI: 10.1021/acsomega.1c05520 (opens in new tab) MDMA Yield engineering Clinical trial Pharmacology

Three regulatory compliant test systems show no signs of MDMA-related genotoxicity

Journal of Psychopharmacology August 31, 2021 Isaac Cohen, Laken Barber, Tyson Paul Dubnicka et al. 1 citation

3,4 Methylenedioxymethamphetamine (MDMA)-assisted therapy has been recently found to be highly effective for treatment of posttraumatic stress disorder (PTSD). Previous studies have been inconclusive in elucidating potential MDMA genotoxicity. We performed three regulatory compliant studies to investigate the potential of genotoxic effects of MDMA treatment in humans: (1) an in vitro bacterial...

DOI: 10.1177/02698811211033603 (opens in new tab) MDMA Genotoxicity Micronucleus test Pharmacology +6

Sleep Quality Improvements After MDMA-Assisted Psychotherapy for the Treatment of Posttraumatic Stress Disorder.

Journal of Traumatic Stress August 1, 2021 Linnae Ponté, Lisa Jerome, Scott Hamilton et al. 42 citations Expression of concern

Sleep disturbances (SDs) are among the most distressing and commonly reported symptoms in posttraumatic stress disorder (PTSD). Despite increased attention on sleep in clinical PTSD research, SDs remain difficult to treat. In Phase 2 trials, 3,4-methylenedioxymethamphetamine (MDMA)-assisted psychotherapy has been shown to greatly improve PTSD symptoms. We hypothesized that MDMA-assisted...

DOI: 10.1002/jts.22696 (opens in new tab) Full text (opens in new tab) Psychedelic therapy PTSD Treatment Trauma treatment Mental health recovery +16

Scaling Up: Multisite Open-Label Clinical Trials of MDMA-Assisted Therapy for Severe Posttraumatic Stress Disorder

Journal of Humanistic Psychology June 23, 2021 Julie B. Wang, Jessica Lin, Leah Bedrosian et al. 22 citations

Background: Posttraumatic stress disorder (PTSD) is a debilitating mental health condition associated with serious adverse health outcomes and functional impairment. Previous MDMA–assisted therapy (MDMA-AT) studies have shown promising results in single site studies. Two open-label studies tested this modality in multisite clinical trials to assess the feasibility of scaling this manualized...

DOI: 10.1177/00221678211023663 (opens in new tab) Psychedelic therapy PTSD Treatment Trauma therapy Mental health treatment +15

MDMA-assisted therapy for severe PTSD: a randomized, double-blind, placebo-controlled phase 3 study.

Nature Medicine June 1, 2021 Jennifer Mitchell, Michael P. Bogenschutz, Alia Lilienstein et al. 965 citations

Post-traumatic stress disorder (PTSD) presents a major public health problem for which currently available treatments are modestly effective. We report the findings of a randomized, double-blind, placebo-controlled, multi-site phase 3 clinical trial (NCT03537014) to test the efficacy and safety of 3,4-methylenedioxymethamphetamine (MDMA)-assisted therapy for the treatment of patients with...

DOI: 10.1038/s41591-021-01336-3 (opens in new tab) Full text (opens in new tab) PTSD Treatment MDMA Therapy Clinical trials Mental health breakthrough

The short-term impact of 3 smoked cannabis preparations versus placebo on PTSD symptoms: A randomized cross-over clinical trial

PLoS One March 17, 2021 Marcel O Bonn-Miller, Sue Sisley, Paula Riggs et al. 129 citations

IMPORTANCE: There is a pressing need for development of novel pharmacology for the treatment of Posttraumatic Stress Disorder (PTSD). Given increasing use of medical cannabis among US military veterans to self-treat PTSD, there is strong public interest in whether cannabis may be a safe and effective treatment for PTSD. OBJECTIVE: The aim of the present study was to collect preliminary data on...

DOI: 10.1371/journal.pone.0246990 (opens in new tab) Cannabis Placebo Randomized controlled trial Pathology +1

MDMA-facilitated cognitive-behavioural conjoint therapy for posttraumatic stress disorder: an uncontrolled trial.

European Journal of Psychotraumatology December 7, 2020 Candice M Monson, Anne C Wagner, Ann T Mithoefer et al. 90 citations

Cognitive-behavioural conjoint therapy (CBCT) for PTSD has been shown to improve PTSD, relationship adjustment, and the health and well-being of partners. MDMA (3,4-methylenedioxymethamphetamine) has been used to facilitate an individual therapy for PTSD. This study was an initial test of the safety, tolerability, and efficacy of MDMA-facilitated CBCT. Six couples with varying levels of...

DOI: 10.1080/20008198.2020.1840123 (opens in new tab) Full text (opens in new tab) Cognitive-behavioural Conjoint Couple MDMA-Assisted Therapy MDMA +14

MDMA-assisted psychotherapy for treatment of anxiety and other psychological distress related to life-threatening illnesses: a randomized pilot study

Scientific Reports November 24, 2020 Julane Andries, Lisa Jerome, Evan Sola et al. 170 citations

Abstract The success of modern medicine creates a growing population of those suffering from life-threatening illnesses (LTI) who often experience anxiety, depression, and existential distress. We present a novel approach; investigating MDMA-assisted psychotherapy for the treatment of anxiety in people with an LTI. Participants with anxiety from an LTI were randomized in a double-blind study to...

Long-term follow-up outcomes of MDMA-assisted psychotherapy for treatment of PTSD: a longitudinal pooled analysis of six phase 2 trials.

Psychopharmacology August 1, 2020 Lisa Jerome, Allison A. Feduccia, Julie B. Wang et al. 163 citations Retracted

Posttraumatic stress disorder (PTSD) is a chronic condition that has wide-ranging negative effects on an individual's health and interpersonal relationships. Treatments with long-term benefits are needed to promote the safety and well-being of those suffering from PTSD. To examine long-term change in PTSD symptoms and additional benefits/harms after 3,4-methylenedioxymethamphetamine...

Posttraumatic Growth After MDMA‐Assisted Psychotherapy for Posttraumatic Stress Disorder

Journal of Traumatic Stress February 19, 2020 Ingmar Gorman, Alexander Belser, Lisa Jerome et al. 43 citations Expression of concern

Abstract 3,4‐Methylenedioxymethamphetamine (MDMA)–assisted psychotherapy for posttraumatic stress disorder (PTSD) has been shown to significantly reduce clinical symptomatology, but posttraumatic growth (PTG), which consists of positive changes in self‐perception, interpersonal relationships, or philosophy of life, has not been studied with this treatment. Participant data ( n = 60) were pooled...

DOI: 10.1002/jts.22479 (opens in new tab) MDMA Placebo Posttraumatic stress Posttraumatic growth +3

Breakthrough for Trauma Treatment: Safety and Efficacy of MDMA-Assisted Psychotherapy Compared to Paroxetine and Sertraline

Frontiers in Psychiatry September 12, 2019 Allison A. Feduccia, Lisa Jerome, Berra Yazar-Klosinski et al. 172 citations

Unsuccessfully treated posttraumatic stress disorder (PTSD) is a serious and life-threatening disorder. Two medications, paroxetine hydrochloride and sertraline hydrochloride, are approved treatments for PTSD by the Food and Drug Administration (FDA). Analyses of pharmacotherapies for PTSD found only small to moderate effects when compared with placebo. The Multidisciplinary Association for...

DOI: 10.3389/fpsyt.2019.00650 (opens in new tab) MDMA Paroxetine Sertraline Psychotherapist

MDMA-assisted psychotherapy for treatment of PTSD: study design and rationale for phase 3 trials based on pooled analysis of six phase 2 randomized controlled trials.

Psychopharmacology September 1, 2019 Michael C Mithoefer, Allison A. Feduccia, Lisa Jerome et al. 364 citations Retracted

Posttraumatic stress disorder is a prevalent mental health condition with substantial impact on daily functioning that lacks sufficient treatment options. Here we evaluate six phase 2 trials in a pooled analysis to determine the study design for phase 3 trials of MDMA-assisted psychotherapy for PTSD. Six randomized, double-blind, controlled clinical trials at five study sites were conducted...

DOI: 10.1007/s00213-019-05249-5 (opens in new tab) Full text (opens in new tab) MDMA-Assisted Psychotherapy Posttraumatic stress disorder MDMA Alongside Therapy Active MDMA +7

3,4-Methylenedioxymethamphetamine-assisted psychotherapy for treatment of chronic posttraumatic stress disorder: A randomized phase 2 controlled trial.

Journal of Psychopharmacology December 1, 2018 Marcela Ot'Alora G, Jim Grigsby, Bruce Poulter et al. 232 citations

Posttraumatic stress disorder often does not resolve after conventional psychotherapies or pharmacotherapies. Pilot studies have reported that 3,4-methylenedioxymethamphetamine (MDMA) combined with psychotherapy reduces posttraumatic stress disorder symptoms. This pilot dose response trial assessed efficacy and safety of MDMA-assisted psychotherapy across multiple therapy teams. Twenty-eight...

DOI: 10.1177/0269881118806297 (opens in new tab) Full text (opens in new tab) Serotonin 3,4-Methylenedioxymethamphetamine MDMA Oxytocin Posttraumatic stress disorder +16