raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:96195

Paternal uniparental disomy of chromosome 21 syndrome

Synonyms: UPD(21)pat

Type
Malformation syndrome
Group
Disorder
Age of onset
Antenatal, Neonatal
Status
active

Paternal uniparental disomy of chromosome 21 is an uniparental disomy of paternal origin that most likely does not have any phenotypic expression except from cases of homozygosity for a recessive disease mutation for which only father is a carrier.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enPaternal uniparental disomy of chromosome 21 syndromeUPD(21)pat
frSyndrome de disomie uniparentale paternelle du chromosome 21UPD(21) paternelle · UPD(21)pat
deUniparentale Disomie 21, paternale= en
esSíndrome de disomía uniparental paterna del cromosoma 21= en
itSindrome disomia uniparentale paterna del cromosoma 21= en
nlPaternale uniparentale disomie van chromosoom 21-syndroom= en
ptDissomia uniparental de origem paterna, cromossoma 21
plZespół jednorodzicielskiej disomii chromosomu 21 pochodzenia ojcowskiego= en
csPaternální uniparentální dizomie chromozomu 21= en
ukБатькова уніпарентна дисомія хромосоми 21= en
zh父源性21号染色体单亲二体父源性UPD(21)
tr21. kromozomun paternal uniparental dizomisiUPD (21) pat

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
ICD-10Q99.8NTBTattributedvalidated
ICD-11LD45.1NTBTindexvalidated
MONDO0019925Evalidated
UMLSC4707801Evalidated

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

0 records

No prevalence record in this release.

6

HPO phenotypes

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

7

Sources for this card