raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:315306

Classic congenital adrenal hyperplasia due to 21-hydroxylase deficiency, salt wasting form

Synonyms: Classic 21-OHD CAH, salt wasting form

Type
Clinical subtype
Group
Subtype of disorder
Inheritance
Autosomal recessive
Age of onset
Infancy, Neonatal
Status
active

A form of classic congenital adrenal hyperplasia due to 21-hydroxylase deficiency characterized by abnormal genital development with variable levels of virilization in females and normal genitalia in males in association with glucocorticoid insufficiency with salt-wasting due to aldosterone deficiency, accelerated growth velocity and bone maturation, premature adrenarche and precocious puberty leading to reduced adult height.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enClassic congenital adrenal hyperplasia due to 21-hydroxylase deficiency, salt wasting formClassic 21-OHD CAH, salt wasting form
frHyperplasie congénitale des surrénales par déficit en 21-hydroxylase classique avec perte de selHCS classique par 21-OHD avec perte de sel
deNebennierenhyperplasie, kongenitale, durch 21-Hydroxylase-Mangel, klassische Form mit SalzverlustKlassische 21-OHD CAH, mit Salzverlust · Klassische kongenitale adrenale Hyperplasie durch 21-Hydroxylase-Mangel mit Salzverlust
esHiperplasia suprarrenal congénita clásica por deficiencia de 21-hidroxilasa, forma perdedora de salHSC 21-OHD clásica, forma perdedora de sal
itIperplasia congenita classica del surrene da deficit di 21-idrossilasi, forma con perdita di SaliCAH classica da 21-OHD, forma con perdita di sali
nlKlassieke congenitale adrenale hyperplasie door deficiëntie van 21-hydroxylase, vorm met zoutverliesKlassieke 21-OHD CAH, met zoutverlies · Klassieke congenitale bijnierhyperplasie door deficiëntie van 21-hydroxylase, vorm met zoutverlies
ptHiperplasia supra-renal congénita clássica por deficiência de 21-hidroxilase, com perda de saisCAH clássica 21-OHD, com perda de sais
plKlasyczny wrodzony przerost nadnerczy spowodowany niedoborem 21-hydroksylazy, postać z utratą soliKlasyczny 21-OHD CAH, postać z utratą soli
csKlasická forma vrozené adrenální hyperplázie způsobená deficitem 21-hydroxylázy, forma se solnými ztrátamiKlasická CAH, 21-OHD, forma se solnými ztrátami
ukКласична вроджена гіперплазія надниркових залоз, зумовлена дефіцитом 21-гідроксилази, солевтратна формаКласичний 21-OHD АГС, сільвтрачаюча форма
zh21羟化酶缺乏所致经典失盐型先天性肾上腺增生症21羟化酶缺乏所致经典失盐型CAH
tr21-hidroksilaz eksikliğine bağlı klasik Doğumsal adrenal hiperplazi, tuz kaybı formuKlasik 21-OHD CAH, tuz kaybettiren formu

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM201910NTBTvalidated
ICD-10E25.0NTBTattributedvalidated
ICD-115A71.01NTBTindexvalidated
MONDO0017839Evalidated
UMLSC5679896Evalidated

E exact · NTBT this ORPHAcode is narrower than the target · BTNT broader than the target · ND not decided.

3

Classification

Preferential parent (Orphanet linearisation):

Parents in the classifications (1):

No children.

4

Genes

1 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
CYP21A2Disease-causing germline mutation(s) inAssessedHGNC:2600ENSG000002318526138156p21.33cytochrome P450 family 21 subfamily A member 2
5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Prevalence at birth1-9 / 100 0007.5 / 100 000EuropeValue and classValidated[EXPERT]
Point prevalence1-9 / 100 0007.5 / 100 000EuropeValue and classValidated[EXPERT]

Value is Orphadata's ValMoy: the mean estimate per 100 000 for prevalence and incidence, the number of cases or families for case reports.

6

HPO phenotypes

Orphanet has no HPO annotation for this code in this release.

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Sources for this card