MUCL1 and gastric adenocarcinoma: Increasing studies have confirmed that MUCL1 functions as a unique oncogene to promote proliferation and metastasis in several adenogenous malignancies, including breast cancer,53 gastric adenocarcinoma,54 and colorectal adenocarcinoma,55 indicating that the MUCL1 gene may be a potential marker to evaluate the aggressiveness of PA.