On February 22, 2012, the first subject was treated in our relapse study of MDMA-assisted psychotherapy for subjects whose PTSD symptoms returned after participating in our now-completed U.S. flagship study. The initial results are promising. While the long-term follow-up to this study found that the therapeutic benefits of MDMA-assisted psychotherapy were on average sustained over time, two subjects experienced a relapse. This study is an open-label proof-of-principle study, intended to determine whether a single additional MDMA-assisted psychotherapy session and four non-drug psychotherapy sessions can once again eliminate these subjects’ PTSD symptoms. We are seeking $20,000 to complete this study.