1291PCost-effectiveness (CE) of avelumab vs standard care (SC) for the treatment of patients (pts) with metastatic Merkel cell carcinoma (mMCC). (23rd October 2018) - Bharmal, M; Amin, A; Stapelkamp, C; Pescott, C; Hatswell, A; Lilley, C; Bullement, A; Willis, A