raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:393

46,XX testicular difference of sex development

Synonyms: 46,XX testicular DSD · 46,XX testicular disorder of sex development · De la Chapelle syndrome · XX, male syndrome

Type
Malformation syndrome
Group
Disorder
Inheritance
Autosomal dominant
Age of onset
Adolescent, Antenatal, Neonatal
Status
active

A rare difference of sex development (DSD) associated with a 46, XX karyotype and characterized by male external genitalia, ranging from normal to atypical with associated testosterone deficiency.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
en46,XX testicular difference of sex development46,XX testicular DSD · 46,XX testicular disorder of sex development · De la Chapelle syndrome · XX, male syndrome
frDifférence testiculaire du développement sexuel 46,XXSyndrome de De la Chapelle · Syndrome du mâle XX · Anomalie testiculaire du développement sexuel 46,XX
de46,XX testikuläre Störung der Geschlechtsentwicklung46,XX testikuläres DSD · De la Chapelle-Syndrom
esDesarrollo sexual diferente testicular 46,XXDSD testicular 46,XX · Síndrome de De la Chapelle · Síndrome del varón XX · Trastorno del desarrollo sexual testicular 46,XX
itMalattia testicolare dello sviluppo sessuale 46,XXSindrome di De la Chapelle
nl46,XX testiculaire geslachtsontwikkelingsstoornis46,XX testiculaire DSD · Syndroom van De la Chapelle · XX, mannelijk syndroom
ptDoença do desenvolvimento sexual 46,XX testicularSíndrome De la Chapelle
plJądrowe zaburzenie rozwoju płci z kariotypem 46,XXXX, mężczyzna · Zespół De la Chapelle
cs46,XX testikulární porucha pohlavního zrání46,XX testikulární DSD · XX, mužský syndrom · De la Chapellův syndrom
uk46,XX тестікулярне порушення статевої диференціації46,XX порушення статевого розвитку яєчок · 46,XX DSD яєчка · Синдром де ла Шапель · XX, чоловічий синдром
zh46, XX性发育相关睾丸疾病De la Chapelle综合征
tr46,XX testiküler cinsiyet gelişim bozukluğuXX, erkek sendromu · 46, XX testiküler DSD · De la Chapelle sendromu

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM278850BTNTvalidated
OMIM300833BTNTvalidated
OMIM400045Evalidated
ICD-10Q99.1NTBTattributedvalidated
ICD-11LD2A.YNTBTindexvalidated
MONDO0100249Evalidated
MeSHD058531Evalidated
UMLSC2936419Evalidated
GARD399Evalidated
MedDRA10087158Evalidated

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 (3):

No children.

4

Genes

5 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
SOX3Disease-causing germline mutation(s) (gain of function) inAssessedHGNC:11199ENSG00000134595313430Xq27.1SRY-box transcription factor 321183788[PMID]_22678921[PMID]
NR5A1Disease-causing germline mutation(s) (loss of function) inAssessedHGNC:7983ENSG000001369311847579q33.3nuclear receptor subfamily 5 group A member 127490115[PMID]
SOX9Disease-causing germline mutation(s) inAssessedHGNC:11204ENSG0000012539860816017q24.3SRY-box transcription factor 924140641[PMID]
SRYDisease-causing germline mutation(s) inAssessedHGNC:11311ENSG00000184895480000Yp11.2sex determining region Y20301589[PMID]
NR0B1Role in the phenotype ofAssessedHGNC:7960ENSG00000169297300473Xp21.2nuclear receptor subfamily 0 group B member 128483799[PMID]
5

Prevalence and incidence

1 record
TypeClassValueAreaQualificationValidationSource
Point prevalence1-9 / 100 0002.5 / 100 000WorldwideValue and classValidated16200839[PMID]_6945286[PMID]_[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

4 annotations · validated 2016-06-01
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0000062Ambiguous genitalia
HP:0008734Decreased testicular size
HP:0000026Male hypogonadism
HP:0000147Polycystic ovaries

Run the differential on the 4 obligate / very frequent terms

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Sources for this card