raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:3268

Radioulnar synostosis-microcephaly-scoliosis syndrome

Synonyms: Giuffré-Tsukahara syndrome · Tsukahara syndrome

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

A rare syndrome with synostosis and limb malformations, characterized by radioulnar synostosis, short stature, microcephaly, scoliosis and intellectual disability. Majority of the patients also have clinodactyly (and sometimes brachymesophalangy) of the fifth fingers, syndactyly and brachydactyly of fingers. Joint laxity of the fingers and knees can also be present. Additional clinical features may include global developmental/psychomotor delay (notably speech delay), attention deficit, hyperactivity and variable dysmorphic features (including hypotelorism, prominent eyes and nose and dysmorphic ears).

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enRadioulnar synostosis-microcephaly-scoliosis syndromeGiuffré-Tsukahara syndrome · Tsukahara syndrome
frSyndrome de synostose radio-ulnaire-microcéphalie-scolioseSyndrome de Giuffré-Tsukahara · Syndrome de Tsukahara
deRadioulnare Synostose-Mikrozephalie-Skoliose-SyndromGiuffré-Tsukahara-Syndrom · Tsukahara-Syndrom
esSíndrome de sinostosis radiocubital-microcefalia-escoliosisSíndrome de Giuffré-Tsukahara · Síndrome de Tsukuhara
itSindrome sinostosi radioulnare-microcefalia-scoliosiSindrome di Giuffré-Tsukahara · Sindrome di Tsukahara
nlRadio-ulnaire synostose - microcefalie - scoliose-syndroomSyndroom van Giuffré-Tsukahara · Syndroom van Tsukahara
ptSíndrome de sinostose radio-cubital-microcefalia-escolioseSíndrome Tsukuhara
plSynostoza - małogłowie - skoliozaZespół Giuffré i Tsukahara · Zespół Tsukahara
csSyndrom zahrnující radioulnární synostózu, mikrocefalii a skoliózuGiuffrého-Tsukaharův syndrom · Tsukaharův syndrom · Giuffré-Tsukaharův syndrom
ukСиндром радіоульнарного синостозу-мікроцефалії-сколіозуСиндром Жюффре-Цукахара · Синдром Цукахара
zh桡尺骨融合-小头畸形-脊柱侧凸综合征Giuffré-Tsukahara综合征
trRadioulnar sinostoz-mikrosefali-skolyoz sendromuTsukahara sendromu · Giuffré-Tsukahara sendromu

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM603438Evalidated
ICD-10Q87.5NTBTattributedvalidated
MONDO0011320Evalidated
MeSHC566376Evalidated
UMLSC3150890Evalidated
GARD394Evalidated

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

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families13 casesWorldwideCase(s)Validated20635354[PMID]
Point prevalence<1 / 1 000 000—WorldwideClass onlyValidatedORPHANET_20635354[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

19 annotations · validated 2016-06-01
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0007477Abnormal dermatoglyphics
HP:0000772Abnormal rib morphology
HP:0000164Abnormality of the dentition
HP:0009811Abnormality of the elbow
HP:0000288Abnormality of the philtrum
HP:0004209Clinodactyly of the 5th finger
HP:0002750Delayed skeletal maturation
HP:0000286Epicanthus
HP:0006101Finger syndactyly
HP:0001263Global developmental delay
HP:0001249Intellectual disability
HP:0000252Microcephaly
HP:0000768Pectus carinatum
HP:0001622Premature birth
HP:0002974Radioulnar synostosis
HP:0002650Scoliosis
HP:0004322Short stature
HP:0000664Synophrys
HP:0000574Thick eyebrow

Run the differential on the 12 obligate / very frequent terms

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Sources for this card