Clinical and biological phenotype of a patient with familial glucocorticoid deficiency type 2 caused by a mutation of melanocortin 2 receptor accessory protein.

Familial glucocorticoid deficiency (FGD) is a rare inherited disorder which may be caused by mutations in the ACTH receptor (melanocortin 2 receptor, MC2R) named FGD type 1 or by mutations in the MC2R accessory protein (MRAP) named FGD type 2. We report the case history of a male patient from birth until adulthood with FGD type 2, confirmed by a mutation of the MRAP gene.