Fecal Microbiota Transplantation (FMT) in Metastatic Melanoma Patients Who Failed Immunotherapy

This is a phase I single-center study of fecal microbiota transplant (FMT) in melanoma patients who failed at least one line of PD-1 blockade. Eligible patients must have a disease amenable to biopsy and lack of contra-indications to FMT. Patients will undergo a baseline evaluation including imaging, tumor biopsy, blood samples and stool studies to confirm suitability for the study. Eligible patients will undergo FMT. The FMT includes a colonoscopy followed by stool capsules. Patients will undergo repeated evaluations including follow-up blood, stool and radiological testings. The study will be conducted over a 24-week period.