Prior Positive Results Confirmed in MAPS-Sponsored, Philanthropy-Funded Phase 3 Trial

Image with title of announcement and hand.
  • MAPP2, the second Phase 3 trial of MDMA-assisted therapy, treated 104 participants living with PTSD with either MDMA-assisted therapy or placebo with therapy
  • The results confirmed findings from MAPP1; no serious adverse events were observed among the participants
  • In a first for psychedelic-assisted therapy trials, more than half of MAPP2 participants identify as people of color

The nonprofit Multidisciplinary Association for Psychedelic Studies’ (MAPS) clinical research program has achieved an important milestone: a successful confirmatory Phase 3 trial of MDMA-assisted therapy for posttraumatic stress disorder (PTSD). The clinical research program that began in 1992 has been sponsored by the nonprofit MAPS and funded through philanthropic donations. Since 2014, MAPS Public Benefit Corporation (MAPS PBC), a wholly-owned subsidiary of MAPS, has administered the trials. 

When I first articulated a plan to legitimize a psychedelic-assisted therapy through FDA approval, many people said it was impossible. Thirty-seven years later, we are on the precipice of bringing a novel therapy to the millions of Americans living with PTSD who haven’t found relief through current treatments. The impossible became possible through the bravery of clinical trial participants, the compassion of mental health practitioners, and the generosity of thousands of donors. Today, we can imagine that MDMA-assisted therapy for PTSD may soon be available and accessible to all who could benefit.

Rick Doblin, Ph.D., Founder and Executive Director of MAPS

The full data from MAPP2, expected to be published in a peer-reviewed journal later this year, will support MAPS PBC’s new drug application to be filed with the U.S. Food and Drug Administration (FDA). 

By 1985, MDMA had been legally used in therapy treatments for a decade, with a growing body of promising anecdotal reports supporting its use. However, increasing social use led the Drug Enforcement Agency to criminalize the use and possession of MDMA that year. In 1986, Dr. Doblin founded MAPS to fund and facilitate research into the potential of psychedelic-assisted therapies; educate the public about psychedelics for medical, social, and spiritual use; and advocate for drug policy reform. A major milestone was reached in 2021 when Nature Medicine published the positive results of the first Phase 3 trial, MAPP1.

MAPP1 and MAPP2, the only completed Phase 3 trials of a psychedelic-assisted therapy, were conducted at 15 sites in the US, Canada, and Israel. Today, Phase 2 trials are being planned or conducted evaluating MDMA-assisted therapies for conditions closely related to PTSD, such as substance use disorder and eating disorders. Trials of other therapies in combination with MDMA are being planned or conducted, such as couples therapy and group therapy among Veterans. These additional Phase 2 trials will determine if MDMA-assisted therapies may be effective for other conditions or with other treatment modalities commonly used to address PTSD.

The safety and efficacy of psychedelic-assisted therapies are currently under investigation. No psychedelic-assisted therapy has been approved by the FDA or other regulatory authorities; no therapy works for everyone; and all therapies, even in clinical settings, carry risks.

Founded in 1986, MAPS is a 501(c)(3) non-profit research and educational organization that develops medical, legal, and cultural contexts for people to benefit from the careful uses of psychedelics and marijuana. MAPS is sponsoring the world’s most advanced psychedelic therapy research through its wholly-owned subsidiaries MAPS PBC and MAPS EU. Since MAPS was founded, philanthropic donors and grantors have given more than $140 million for psychedelic and marijuana research and education. MAPS has earned both the Guidestar Platinum Seal of Transparency and a 4-Star Rating from Charity Navigator.


Keep Reading…

Why is diverse representation important in clinical trials?

If participants in clinical trials mostly represent similar populations, it can be difficult to ensure treatments will be safe and effective for a broad population. This is easy to understand with age: because adolescents and children may react differently to medications or dosages, Congress passed a law that requires some FDA-approved drugs to be tested separately in adolescents and children after they are proven safe and effective for adults.
In clinical trials for PTSD treatments, it is particularly important that researchers strive to include people of color and LGBTQI+ individuals, who are more likely to develop PTSD — but less likely to receive a diagnosis or treatment.
Read more: MAPS Doubles Ethnoracial Diversity in Trials Again

What is MDMA-assisted therapy?

MDMA-assisted therapy for PTSD is an integrative treatment delivered by two specially trained behavioral health professionals. It consists of four ninety-minute preparation sessions and three eight-hour medication sessions, each followed by three ninety-minute integration sessions.
Read more: Cultivating Inner Growth: The Inner Healing Intelligence in MDMA-Assisted Therapy