Abnormality of Glucagon Secretion, also known as abnormality of secretion of glucagon, is related to mahvash disease and jejunal somatostatinoma. An important gene associated with Abnormality of Glucagon Secretion is SHISAL2B (Shisa Like 2B), and among its related pathways/superpathways are GPCR downstream signalling and Signal Transduction. Related phenotype is digestive/alimentary.