HNF1A and esophageal adenocarcinoma: Previous studies identified HNF1A‐AS1 as a functional lncRNA—HNF1A‐AS1 was significantly up‐regulated in oesophageal adenocarcinoma and lung adenocarcinoma tissues; increased HNF1A‐AS1 expression could regulate cell proliferation and metastasis in lung adenocarcinoma 18, while knockdown of HNF1A‐AS1 significantly inhibited cell proliferation, migration and invasion in oesophageal adenocarcinoma 19.