non-classic congenital adrenal hyperplasia
MONDO:0023601
A milder form of congenital adrenal hyperplasia characterized by decreased activity of an enzyme in the steroidogenic pathway, typically presenting later in life, that does not require life-long cortisol replacement.
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Late onset congenital adrenal hyperplasia
Late onset congenital adrenal hyperplasia (LOCAH), also known as nonclassical congenital adrenal hyperplasia (NCCAH or NCAH), is a milder form of congenital adrenal hyperplasia (CAH), a group of autosomal recessive disorders characterized by impaired cortisol synthesis that leads to variable degrees of postnatal androgen excess. The causes of LOCAH are the same as of classical CAH, and in the majority of the cases are the mutations in the CYP21A2 gene resulting in corresponding activity changes in the associated P450c21 (21-hydroxylase) enzyme which ultimately leads to excessive androgen production. Other causes, albeit less frequent, are mutations in genes affecting other enzymes involved in steroid metabolism, like 11β-hydroxylase or 3β-hydroxysteroid dehydrogenase. It has a prevalence between 0.1% and 2% depending on population, and is one of the most common autosomal recessive genetic diseases in humans. The pathophysiology is complex and not all individuals are symptomatic.
Background only. Canonical identity remains MONDO; clinical-trial relationships come from ClinicalTrials.gov.Drugs being studied
Disease identity and terminology: MONDO. Trial relationships: ClinicalTrials.gov.