UGT1A1 and neoplasm: In the multivariate analysis, female sex (OR, 2.87; p = 0.021), ECOG PS = 1 (OR, 3.86; p = 0.015), tumor location of the pancreatic head (OR, 3.06; p = 0.023), UGT1A1 IM group (OR, 4.78; p = 0.005), and UGT1A1 PM group (OR, 4.86; p = 0.035) were independently associated with FN.