" /> Glucocorticoid deficiency 1 - CISMeF





Preferred Label : Glucocorticoid deficiency 1;

Symbol : GCCD1;

CISMeF acronym : FGD1; GCCD1;

Type : Phenotype, molecular basis known;

Alternative titles and symbols : FGD1; Familial glucocorticoid deficiency 1; Acth resistance; Adrenal unresponsiveness to acth;

Description : Familial glucocorticoid deficiency is an autosomal recessive disorder resulting from defects in the action of adrenocorticotropic hormone (ACTH) to stimulate glucocorticoid synthesis in the adrenal. Production of mineralocorticoids by the adrenal is normal. Patients present in early life with low or undetectable cortisol and, because of the failure of the negative feedback loop to the pituitary and hypothalamus, grossly elevated ACTH levels (summary by Clark et al., 2009). - Genetic Heterogeneity of Familial Glucocorticoid Deficiency Familial glucocorticoid deficiency-2 (GCCD2; 607398) is caused by mutation in the MRAP gene (699196) on chromosome 21q22. GCCD3 has been mapped to chromosome 8q11.2-q13.2. GCCD4 (614736) is caused by mutation in the NNT gene (607878) on chromosome 5p12.;

Inheritance : Autosomal recessive;

Molecular basis : Caused by mutation in the melanocortin-2 receptor gene (MC2R, 607397.0001);

Laboratory abnormalities : Hypoglycemia; Low to undetectable plasma cortisol; Elevated plasma ACTH; Normal plasma renin; Normal plasma aldosterone;

Prefixed ID : #202200;

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03/05/2025


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