Weak nuclear with or without cytoplasmic HNF-1B expression was seen in 3 of 11 (27.3%) esophageal adenocarcinomas, 9 of 14 (64.3%) stomach adenocarcinomas, 7 of 18 bladder urothelial (38.9%), and 10 of 21 (42.8%) non-clear cell type Müllerian carcinomas. Here, HNF1B is linked to gastric adenocarcinoma.