[en] The challenge for the clinician is to detect early gastric autoimmunity markers to avoid some of its complications such as micronutriments and drug malabsorption. Indeed autoimmune gastritis may be associated with the development of neuroendocrine tumors (NET), gastric adenocarcinomas or even MALT lymphomas. In this lecture we summarize recent diagnostic tools and new therapies taylored for autoimmune gastritis.