The invention relates to methods of treating cancer in a subject, comprising administering to the subject a therapeuticaliy effective amount of an inhibitor of the interaction between the PD-1 receptor and its ligand PD-L1.本發明係關於治療個體癌症之方法,其包括向該個體投與治療上有效量之PD-1受體與其配位體PD-L1之間相互作用的抑制劑。