SUV39H1 and neoplasm: We observed that there is a little tumor growth delay in the Suv39h1-KO mice and in the anti-PD-1-treated mice, and that the combination of Suv39h1 deficiency plus PD-1 blockade induces a higher control of the tumor growth, further demonstrating that the Suv39h1 effect is not restricted to only highly immunogenic tumor types and is T cell intrinsic.