Familial Glucocorticoid Deficiency, also known as glucocorticoid deficiency, is related to glucocorticoid deficiency 1 and achalasia. An important gene associated with Familial Glucocorticoid Deficiency is MC2R (Melanocortin 2 Receptor), and among its related pathways/superpathways are Signal Transduction and GPCR downstream signalling. The drugs Dexamethasone and Dexamethasone acetate have been mentioned in the context of this disorder. Affiliated tissues include adrenal gland and adrenal cortex, and related phenotypes are adrenal insufficiency and decreased circulating cortisol level