Differences of Sex Development

Gene: HSD3B2

Green List (high evidence)

Classic 3-beta-hydroxysteroid dehydrogenase deficiency is an autosomal recessive form of CAH characterized by a severe impairment of steroid biosynthesis in both the adrenals and the gonads, resulting in decreased excretion of cortisol and aldosterone and of progesterone, androgens, and estrogens by these tissues. Affected newborns exhibit signs and symptoms of glucocorticoid and mineralocorticoid deficiencies, which may be fatal if not diagnosed and treated early, especially in the severe salt-wasting form. Moreover, male newborns exhibit pseudohermaphroditism with incomplete masculinization of the external genitalia due to an impairment of androgen biosynthesis in the testis. In contrast, affected females exhibit normal sexual differentiation or partial virilization.

Established gene-disease association.

Created: 5 May 2022, 12:29 a.m. | Last Modified: 5 May 2022, 12:29 a.m.

Panel Version: 0.251

Mode of inheritance
BIALLELIC, autosomal or pseudoautosomal

Phenotypes
Adrenal hyperplasia, congenital, due to 3-beta-hydroxysteroid dehydrogenase 2 deficiency, MIM# 201810

Publications

• 1363812
• 18252794