1290PAvelumab in European patients (pts) with metastatic Merkel cell carcinoma (mMCC): Experience from an ad-hoc expanded access program (EAP). (23rd October 2018) - Nathan, P; Kasturi, V; Dirix, L; Fenig, E; Ascierto, P A; Hennessy, M; Reed, J; Engelsberg, A; Hariharan, S; Lebbé, C