Congenital adrenal hyperplasia due to cytochrome P450 oxidoreductase deficiency

What it is

A rare form of congenital adrenal hyperplasia due to P450 oxidoreductase deficiency and characterized by glucocorticoid deficiency, virilization of external genitalia in females, and undervirilization in males. Findings range from severely affected infants with 46,XX and 46,XY disorders/differences of sex development (DSD) and cortisol deficiency to mildly affected women who appear to have polycystic ovary syndrome, or mildly affected men with gonadal insufficiency.

Key facts

Prevalence

1-9 / 1 000 000 (at birth, Europe)

Age of onset

Infancy, Neonatal

Inheritance

Autosomal recessive

Classified as

Disease

Prevalence figures describe populations, not individuals, and are often estimates from a single study. Where the figure is an incidence or a birth prevalence, it says so.

Signs and symptoms

These ranges are how often a sign appears across everyone diagnosed, not a prediction for one person — most people have some of these and not others. Orphanet also records findings that are specifically absent in this disease; those are in the data but not listed here.

Gene

ICD-10 codes

ICD-10 has no distinct code for most rare diseases, so many are filed under the nearest available one. A shared code identifies the group, not this disease — the ORPHAcode above is what identifies it.

Cross-references