Gastrinoma, also known as gastrin secreting tumor, is related to duodenal gastrinoma and zollinger-ellison syndrome. An important gene associated with Gastrinoma is MEN1 (Menin 1), and among its related pathways/superpathways are GPCR downstream signalling and Signal Transduction. The drugs Dexlansoprazole and Lansoprazole have been mentioned in the context of this disorder. Affiliated tissues include pancreas and liver, and related phenotypes are nervous system and homeostasis/metabolism