GPT and esophageal cancer: Among men, the very high AST/ALT ratio group had higher adjusted HRs for developing esophageal cancer (adjusted HR 1.98; 95% CI 1.14–3.44), gastric cancer (adjusted HR 1.80; 95% CI 1.21–2.68), pancreatic cancer (adjusted HR 4.07; 95% CI 1.04–15.9), and cancers of the urinary tract (C64–68) as compared with the middle AST/ALT ratio group.