raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:261524

Paternal uniparental disomy of chromosome X syndrome

Synonyms: UPD(X)pat

Type
Malformation syndrome
Group
Disorder
Age of onset
Neonatal
Status
active

A uniparental disomy of paternal origin that does not seem to have an adverse impact on the phenotype of an individual. There is a possibility of homozygosity for a recessive disease mutation for which the father is a carrier and specific phenotype depends on the inherited disorder.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enPaternal uniparental disomy of chromosome X syndromeUPD(X)pat
frSyndrome de disomie uniparentale paternelle du chromosome xUPD(X) paternelle · UPD(X)pat
deUniparentale Disomie X, paternale= en
esSíndrome de disomía uniparental paterna del cromosoma X= en
itSindrome disomia uniparentale paterna del cromosoma X= en
nlPaternale uniparentale disomie van chromosoom X-syndroom= en
ptDissomia uniparental paterna do cromossoma X
plZespół jednorodzicielskiej disomii chromosomu X pochodzenia ojcowskiego= en
csPaternální uniparentální dizomie chromozomu X= en
ukОднобатьківська батькова дисомія хромосоми Х= en
zh父源X染色体单亲二倍体= en
trPaternal X kromozomu uniparental dizomisiUPD (X) pat

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
ICD-10Q99.8NTBTattributedvalidated
ICD-11LD45.1NTBTindexvalidated
MONDO0016852Evalidated
UMLSC5191049Evalidated

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

0 direct

Orphanet records no gene directly on this code.

5

Prevalence and incidence

1 record
TypeClassValueAreaQualificationValidationSource
Point prevalenceUnknown—WorldwideClass onlyNot yet validatedORPHANET

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

18 annotations · validated 2015-11-30
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0002916Abnormality of chromosome segregation
HP:0002967Cubitus valgus
HP:0008734Decreased testicular size
HP:0100853Hypoplastic areola
HP:0001252Hypotonia
HP:0000789Infertility
HP:0001256Intellectual disability, mild
HP:0002162Low posterior hairline
HP:0000054Micropenis
HP:0011343Moderate global developmental delay
HP:0000358Posteriorly rotated ears
HP:0000914Shield chest
HP:0010049Short metacarpal
HP:0000470Short neck
HP:0004322Short stature
HP:0006610Wide intermamillary distance
Frequent (79-30%)
HP:0001263Global developmental delay
HP:0001249Intellectual disability

Run the differential on the 12 obligate / very frequent terms

Annotation source: 20720308[PMID]_8281147[PMID]_11950856[PMID]_8370585[PMID]_15957160[PMID]_14688173[PMID]

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Sources for this card