raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:251004

Paternal uniparental disomy of chromosome 1 syndrome

Synonyms: UPD(1)pat

Type
Malformation syndrome
Group
Disorder
Inheritance
Not applicable, Unknown
Age of onset
Infancy, Neonatal
Status
active

Paternal uniparental disomy of chromosome 1 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 1 syndromeUPD(1)pat
frSyndrome de disomie uniparentale d'origine paternelle du chromosome 1UPD(1) paternelle · UPD(1)pat
deUniparentale Disomie 1, paternale= en
esSíndrome de disomía uniparental paterna del cromosoma 1= en
itSindrome disomia uniparentale paterna del cromosoma 1= en
nlPaternale uniparentale disomie van chromosoom 1-syndroom= en
ptDissomia uniparental paterna do cromossoma 1UPD1 paterna
plZespół jednorodzicielskiej disomii chromosomu 1 pochodzenia ojcowskiego= en
csPaternální uniparentální dizomie chromozomu 1UDP(1)pat
ukБатькова уніпаретна дисомія хромосоми 1= en
zh父源1号染色体单亲二体父源1号染色体单亲二倍体
tr1. kromozomun paternal uniparental dizomisiUPD (1) pat

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
ICD-10Q99.8NTBTattributedvalidated
ICD-11LD45.1NTBTindexvalidated
MONDO0016650Evalidated
UMLSC4707800Evalidated

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

29 annotations · validated 2017-05-17
HPOTerm (as annotated by Orphanet)Diagnostic
Frequent (79-30%)
HP:0008066Abnormal blistering of the skin
HP:0030612Abnormal retinal morphology on macular OCT
HP:0000682Abnormality of dental enamel
HP:0000970Anhidrosis
HP:0012444Brain atrophy
HP:0001363Craniosynostosis
HP:0000823Delayed puberty
HP:0007641Dyschromatopsia
HP:0000105Enlarged kidney
HP:0004802Episodic hemolytic anemia
HP:0003072Hypercalcemia
HP:0000822Hypertension
HP:0003138Increased blood urea nitrogen
HP:0012587Macroscopic hematuria
HP:0007754Macular dystrophy
HP:0000793Membranoproliferative glomerulonephritis
HP:0001336Myoclonus
HP:0001319Neonatal hypotonia
HP:0001513Obesity
HP:0007021Pain insensitivity
HP:0000613Photophobia
HP:0002591Polyphagia
HP:0007272Progressive psychomotor deterioration
HP:0000529Progressive visual loss
HP:0000093Proteinuria
HP:0002757Recurrent fractures
HP:0001250Seizure
HP:0004322Short stature
HP:0000486Strabismus

Annotation source: 21270828[PMID]_17277736[PMID]_11071380[PMID]_10951251[PMID]_15663509[PMID]_21270828[PMID]_24334170[PMID]_26846731[PMID]_23275530[PMID]

7

Sources for this card