418 Phase 1b/2 KEYNOTE-365 cohort I: platinum-containing chemotherapy alone or in combination with pembrolizumab for treatment-emergent neuroendocrine prostate carcinoma - Neal Shore; Christian Poehlein; Charles Schloss; Anthony Joshua; Evan Yu; Johann De Bono; Xin Tong Li; Gero Kramer (Journal for ImmunoTherapy of Cancer, 2021)