raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:2793

Otoonychoperoneal syndrome

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

A rare multiple congenital anomalies/dysmorphic syndrome characterized by the association of dysplastic external ears, nail hypoplasia, and variable skeletal malformations, such as hypoplastic or absent fibulae, abnormalities of the scapula, clavicle, and acromioclavicular joint, and talipes equinovarus, among others. Joint contractures and mild facial dysmorphism have also been reported.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enOtoonychoperoneal syndrome
frSyndrome oto-onycho-péronéal
deOto-onycho-peroneales Syndrom
esSíndrome oto-ónico-peroneal
itSindrome oto-onico-peroneale
nlOto-onycho-peroneaal syndroom
ptSíndrome oto-onico-peroneal
plZespół uszno-paznokciowo-strzałkowy
csOtoonychoperoneální syndrom
ukОтооніхоперонеальний синдром
zh耳指甲腓骨综合征
trOtoonkopperoneal sendrom

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM259780Evalidated
ICD-10Q87.5NTBTattributedvalidated
ICD-11LD27.4NTBTindexvalidated
MONDO0009822Evalidated
MeSHC564912Evalidated
UMLSC1850105Evalidated
GARD4170Evalidated

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 (5):

No children.

4

Genes

0 direct

Orphanet records no gene directly on this code.

5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families6 casesWorldwideCase(s)Validated15216555[PMID]
Point prevalence<1 / 1 000 000—WorldwideClass onlyValidatedORPHANET_15216555[PMID]

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

13 annotations · validated 2016-06-01
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0000940Abnormal diaphysis morphology
HP:0011039Abnormal helix morphology
HP:0001597Abnormal nail morphology
HP:0009738Abnormality of the antihelix
HP:0009906Aplasia/Hypoplasia of the earlobes
HP:0001371Flexion contracture
HP:0001256Intellectual disability, mild
HP:0006380Knee flexion contracture
HP:0000400Macrotia
HP:0009756Popliteal pterygium
HP:0008577Underfolded helix
Frequent (79-30%)
HP:0000268Dolichocephaly
HP:0000582Upslanted palpebral fissure

Run the differential on the 11 obligate / very frequent terms

7

Sources for this card