GAST and gastric carcinoma: Knowledge of the mechanisms gives indications for age for eradicating H. pylori (before development of oxyntic atrophy) and when to take a gastrin antagonist like netazepide [103,104] in prophylaxis and the treatment of gastric malignancies of a moderate grade (NETs) [104], and possibly of gastric carcinomas as well since they often express the gastrin receptor [105].