775 Immune Checkpoint Inhibitor Therapy in Patients With Preexisting Inflammatory Bowel Disease

INTRODUCTION: We characterized gastrointestinal adverse events in patients with underlying inflammatory bowel disease (IBD) who received immune checkpoint inhibitors. METHODS: We performed a fourteen-center, retrospective study of patients with documented IBD who received immune checkpoint inhibitor therapy between January 2010 and February 2019. Backward selection and multivariate logistic regression were conducted to assess risk of...