Dr. Arielle Elkrief MD, FRCPC is a clinician-scientist and Assistant Professor in the Department of Oncology at the Centre hospitalier de l’Université de Montréal (CHUM) and Co-Director of the CHUM Microbiome Centre. She was recruited to the CRCHUM in 2023 and directs her research laboratory focused on the gut and tumor microbiome as a biomarker of response to immunotherapy. She leads microbiome-centered clinical trials combining microbiome interventions such as fecal microbiota transplantation (FMT), prebiotics, and diet. In addition, she contributed to establishing the negative impact of antibiotics on immunotherapy activity in patients with cancer. She was recently awarded the American Society of Clinical Oncology Young Investigator Award and the Society of Immunotherapy of Cancer-Melanoma Research Alliance Women in Melanoma Award. She has published over 74 papers in journals including the Journal of Clinical Oncology, Nature Medicine, Journal of Thoracic Oncology, Annals of Oncology, and Clinical Cancer Research.