raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:2128

Isolated hemihyperplasia

Synonyms: Hemi 3 syndrome · Hemicorporal hypertrophy · Isolated hemihypertrophy

Type
Morphological anomaly
Group
Disorder
Inheritance
Autosomal dominant
Age of onset
Adolescent, Childhood, Infancy
Status
active

Isolated hemihyperplasia is a rare overgrowth syndrome characterized by an asymmetric regional body overgrowth, involving at least one limb, and associated with an increased risk of developing embryonal tumors, principally nephroblastoma and hepoblastoma.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enIsolated hemihyperplasiaHemi 3 syndrome · Hemicorporal hypertrophy · Isolated hemihypertrophy
frHémihyperplasie isoléeHypertrophie hémicorporelle · Hémihypertrophie isolée · Syndrome hémi 3
deHemihyperplasie, isolierteHemi 3-Syndrom · Hemihypertrophie, isolierte
esHemihiperplasia aisladaHemihipertrofia aislada · Hipertrofia hemicorporal · Síndrome hemi 3
itEmi-iperplasia isolataEmi-ipertrofia isolata · Ipertrofia dell'emicorpo · Sindrome emi 3
nlGeïsoleerde hemihyperplasieGeïsoleerde hemihypertrofie · Hemi 3-syndroom · Hemicorporale hypertrofie
ptHemihiperplasia isoladaSíndrome Hemi 3
plIzolowany przerost połowiczyIzolowana hemihipertrofia · Przerost połowy ciała · Zespół Hemi 3
csIzolovaná hemihyperplázieHemi-3-syndrom · Hemikorporální hypertrofie · Izolovaná hemihypertrofie
ukІзольована гемігіперплазіяСиндром Hemi 3 · Гемокорпоральна гіпертрофія · Ізольована гемігіпертрофія
zh孤立型偏侧发育过度孤立型偏身肥大症
trİzole hemihiperplaziHemi 3 sendromu · Hemicorporal hipertrofi · İzole hemihipertrofi

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM235000Evalidated
ICD-10Q87.3NTBTattributedvalidated
ICD-11LD2CNTBTindexvalidated
MONDO0009331Evalidated
MeSHC565524Evalidated
UMLSC1856184Evalidated
GARD2630Evalidated
MedDRA10019463Evalidated

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

3 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
H19Disease-causing germline mutation(s) inAssessedHGNC:4713ENSG0000013060010328011p15.5H19 imprinted maternally expressed transcript15651076[PMID]_16532391[PMID]_18159214[PMID]
IGF2Disease-causing germline mutation(s) inAssessedHGNC:5466ENSG0000016724414747011p15.5insulin like growth factor 218159214[PMID]
KCNQ1OT1Disease-causing germline mutation(s) inAssessedHGNC:6295ENSG0000026982160411511p15.5KCNQ1 opposite strand/antisense transcript 115651076[PMID]_16770802[PMID]
5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Point prevalence1-9 / 100 0005 / 100 000WorldwideValue and classValidated30645194[PMID]_ORPHANET
Prevalence at birth1-9 / 100 0005 / 100 000WorldwideValue and classValidated30645194[PMID]_ORPHANET

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

12 annotations · validated 2016-06-01
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0001555Asymmetry of the thorax
HP:0001528Hemihypertrophy
HP:0002650Scoliosis
Frequent (79-30%)
HP:0000164Abnormality of the dentition
HP:0000324Facial asymmetry
HP:0001256Intellectual disability, mild
Occasional (29-5%)
HP:0030680Abnormal cardiovascular system morphology
HP:0000028Cryptorchidism
HP:0007328Impaired pain sensation
HP:0000023Inguinal hernia
HP:0002475Myelomeningocele
HP:0002667Nephroblastoma

Run the differential on the 3 obligate / very frequent terms

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Sources for this card