CTLA4 and familial pancreatic carcinoma: Recent studies have illustrated that autophagy facilitates immune evasion of pancreatic cancer by lysosomal‐mediated degradation of MHC‐I, and inhibition of autophagy using chloroquine rescues the expression of MHC‐I, improves antigen presentation, and synergizes with immunotherapy (anti‐PD1 or anti‐CTLA4 antibodies).80, 81