PDCD1 and neoplasm: A multiple logistic regression analysis including age, sex, ethnicity, tumor type, PD-1 inhibitor used, number of prior chemotherapies, prior radiation, and concurrent ipilimumab therapy, revealed that an ALC > 2000 at the start of therapy was associated with a higher incidence of irAE of grade ≥ 2 (OR 1.996, p<0.05), as was an ALC > 2000 at 1 month into therapy (OR 1.813, p<0.05).