Overview Pembrolizumab-based Therapy in Previously Treated High Grade Neuroendocrine Carcinomas Status: Active, not recruiting Trial end date: 2023-05-31 Target enrollment: Participant gender: Summary This is a pilot study of pembrolizumab-based therapy in previously treated extrapulmonary poorly differentiated neuroendocrine carcinoma Phase: Phase 2 Details Lead Sponsor: University of California, San FranciscoCollaborator: Merck Sharp & Dohme Corp.Treatments: Albumin-Bound PaclitaxelIrinotecanPaclitaxelPembrolizumab