Pan-cancer landscape of CD274 (PD-L1) copy number changes in 244 584 patient samples and the correlation with PD-L1 protein expression ====================================================================================================================================== * Richard S.P. Huang * Karthikeyan Murugesan * Meagan Montesion * Dean C. Pavlick * Douglas A. Mata * Matthew C. Hiemenz * Brennan Decker * Garrett Frampton * Lee A. Albacker * Jeffrey S. Ross