Autoimmune Gastritis is related to atrophic gastritis and vitamin b12 deficiency. An important gene associated with Autoimmune Gastritis is GAST (Gastrin), and among its related pathways/superpathways are NF-kappaB Signaling and T-cell activation SARS-CoV-2. The drugs Antibodies and Immunoglobulins have been mentioned in the context of this disorder. Affiliated tissues include t cells and spinal cord, and related phenotypes are homeostasis/metabolism and endocrine/exocrine gland