GAST and gastric neuroendocrine tumor, well differentiated, low or intermediate grade: Findings revealed that while maintenance therapy with vonoprazan 10 mg QD was associated with higher gastrin, parietal cell hyperplasia, and foveolar hyperplasia than maintenance lansoprazole 10 mg QD, no increased risk of malignant epithelial alterations or gastric neuroendocrine tumors was observed.