MB-PAT for Demoralization in Advanced Cancer ('PAT-MIND') Trial

This pilot clinical trial will study psilocybin-assisted therapy for adults with advanced cancer who are experiencing demoralization, existential distress, or related psychological concerns. Demoralization can include feelings of hopelessness, helplessness, loss of meaning, and distress related to illness or end of life. The purpose of this study is to assess whether a hybrid group-based psilocybin-assisted therapy program is feasible, acceptable, and safe in adults with advanced cancer. The study will also explore which combination of psilocybin dose and psychotherapy approach may be most promising for a future larger trial. Participants will be randomly assigned by wave to one of four intervention combinations: 25 mg psilocybin with mindfulness-based psilocybin-assisted therapy, 25 mg psilocybin with standard psilocybin-assisted therapy, 5 mg psilocybin with mindfulness-based psilocybin-assisted therapy, or 5 mg psilocybin with standard psilocybin-assisted therapy. The psilocybin dose will be blinded, meaning participants and some members of the study team will not know which dose was assigned. Psychotherapy approach will not be blinded. The study will enroll at least 60 participants across Calgary and Kingston.