raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:98754

Prader-Willi syndrome due to maternal uniparental disomy of chromosome 15

Synonyms: UPD(15)mat

Type
Etiological subtype
Group
Subtype of disorder
Inheritance
Not applicable
Age of onset
Adolescent, Adult
Status
active

This disease is described under Prader-Willi syndrome

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enPrader-Willi syndrome due to maternal uniparental disomy of chromosome 15UPD(15)mat
frSyndrome de Prader-Willi dû à une disomie uniparentale maternelle du chromosome 15UPD(15) maternelle · UPD(15)mat
dePrader-Willi-Syndrom durch maternale uniparentale Disomie 15= en
esSíndrome de Prader-Willi por disomía uniparental materna del cromosoma 15= en
itSindrome di Prader-Willi da disomia uniparentale materna del cromosoma 15= en
nlPrader-Willisyndroom door maternale uniparentale disomie van chromosoom 15= en
ptSíndrome de Prader-Willi por dissomia uniparental do cromossoma 15, de origem materna
plZespół Pradera i Willego z powodu matczynej jednorodzicielskiej disomii chromosomu 15= en
csPraderův-Williho syndrom způsobený maternální uniparentální dizomií chromozomu 16UPD(15)mat · Prader-Williho syndrom způsobený maternální uniparentální dizomií chromozomu 16
ukСиндром Прадера-Віллі, зумовлений материнською уніпарентною дисомією хромосоми 15= en
zh15号染色体母源单亲二体型Prader-Willi综合征母源性UPD(15)
trKromozom 15'in maternal uniparental dizomisine bağlı Prader-Willi sendromuUPD (15) mat
2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM176270NTBTvalidated
ICD-10Q87.1NTBTattributedvalidated
ICD-11LD90.3NTBTattributedvalidated
MONDO0020298Evalidated
UMLSC5680343Evalidated

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 (2):

No children.

4

Genes

4 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
MAGEL2Role in the phenotype ofAssessedHGNC:6814ENSG0000025458560528315q11.2MAGE family member L220301505[PMID]
NDNRole in the phenotype ofAssessedHGNC:7675ENSG0000018263660211715q11.2necdin, MAGE family member20301505[PMID]
OCA2Role in the phenotype ofAssessedHGNC:8101ENSG0000010404461140915q12-q13.1OCA2 melanosomal transmembrane protein20301505[PMID]
SNRPNRole in the phenotype ofAssessedHGNC:11164ENSG0000012873918227915q11.2small nuclear ribonucleoprotein polypeptide N20301505[PMID]
5

Prevalence and incidence

0 records

No prevalence record in this release.

6

HPO phenotypes

67 annotations · validated 2020-11-16
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0000028Cryptorchidism
HP:0008872Feeding difficulties in infancy
HP:0001513Obesity
HP:0002119Ventriculomegaly
Frequent (79-30%)
HP:0025160Abnormal temper tantrums
HP:0010627Anterior pituitary hypoplasia
HP:0000708Atypical behavior
HP:0000717Autism
HP:0000729Autistic behavior
HP:0011734Central adrenal insufficiency
HP:0000060Clitoral hypoplasia
HP:0030339Decreased circulating gonadotropin level
HP:0000824Decreased response to growth hormone stimulation test
HP:0008734Decreased testicular size
HP:0000823Delayed puberty
HP:0003241External genital hypoplasia
HP:0001508Failure to thrive
HP:0000044Hypogonadotropic hypogonadism
HP:0000064Hypoplastic labia minora
HP:0001252Hypotonia
HP:0000789Infertility
HP:0006889Intellectual disability, borderline
HP:0001256Intellectual disability, mild
HP:0012105Occipital cortical atrophy
HP:0012104Parietal cortical atrophy
HP:0012650Perisylvian polymicrogyria
HP:0002591Polyphagia
HP:0031169Postterm pregnancy
HP:0000786Primary amenorrhea
HP:0000709Psychosis
HP:0002205Recurrent respiratory infections
HP:0002650Scoliosis
HP:0001773Short foot
HP:0004322Short stature
HP:0200055Small hand
HP:0000046Small scrotum
HP:0001328Specific learning disability
HP:0000486Strabismus
Occasional (29-5%)
HP:0007874Almond-shaped palpebral fissure
HP:0100739Bulimia
HP:0002871Central apnea
HP:0011787Central hypothyroidism
HP:0031507Decreased circulating thyroxine level
HP:0001558Decreased fetal movement
HP:0031100Decreased inhibin B level
HP:0000819Diabetes mellitus
HP:0002714Downturned corners of mouth
HP:0002578Gastroparesis
HP:0001263Global developmental delay
HP:0001385Hip dysplasia
HP:0010829Impaired temperature sensition
HP:0002870Obstructive sleep apnea
HP:0000938Osteopenia
HP:0000939Osteoporosis
HP:0010741Pedal edema
HP:0012412Premature adrenarche
HP:0012411Premature pubarche
HP:0001250Seizure
HP:0100716Self-injurious behavior
HP:0012166Skin-picking
HP:0002360Sleep abnormality
HP:0001518Small for gestational age
Very rare (<4-1%)
HP:0005599Hypopigmentation of hair
HP:0001010Hypopigmentation of the skin
HP:0002342Intellectual disability, moderate
HP:0007730Iris hypopigmentation
HP:0000826Precocious puberty

Run the differential on the 4 obligate / very frequent terms

Annotation source: 26062517[PMID]_20301505[PMID]_27777904[PMID]

7

Sources for this card