Microbiota and immunotherapy: The birth of a new paradigm?
Emerging data suggest fecal microbiota transplantation (FMT) may improve cancer patients' responses to immune checkpoint blockade not only by enriching beneficial bacteria but also by depleting harmful taxa. Here, we discuss the "supplementation" and new "depletion" FMT paradigms in cancer management and highlight key knowledge gaps to be addressed to move this field forward.