Serum CD73 is a prognostic factor in patients with metastatic melanoma and is associated with response to anti-PD-1 therapy =========================================================================================================================== * Roberta Turiello * Mariaelena Capone * Diana Giannarelli * Elva Morretta * Maria Chiara Monti * Gabriele Madonna * Domenico Mallardo * Lucia Festino * Rosa Azzaro * Mitchell P Levesque * Laurence Imhof * Benjamin Weide * Teresa Amaral * Marc Chevrier * Antje Sucker * Piotr Rutkowski * Dirk Schadendorf * Celeste Lebbe * Jason John Luke * Kilian Wistuba-Hamprecht * Reinhard Dummer * Aldo Pinto * Silvana Morello * Paolo A Ascierto