NEW YORK (Reuters Health)—After an immune-related adverse event, the risk-reward ratio for an anti-PD-1 (anti-programmed death-1) or anti-PD-L1 (anti-programmed death ligand-1) rechallenge seems to be acceptable if patients are closely monitored, researchers say. “The immune checkpoint inhibitors anti-PD-1 and anti-PD-L1 have proven efficacy in the treatment of many cancers, but patients may experience immune-related adverse…