raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:2440

Isolated split hand-split foot malformation

Synonyms: Ectrodactyly · SHFM · Split hand foot malformation

Type
Malformation syndrome
Group
Disorder
Inheritance
Autosomal dominant, Autosomal recessive, X-linked recessive
Age of onset
Infancy, Neonatal
Status
active

A rare, congenital, bone development disorder characterized by a spectrum of terminal limb malformations including hypoplasia/absence of central rays of the hands and feet (that can occur in one to all four digits), variable degrees of median clefts of the hands and/or feet, aplasia and syndactyly, with a wide range of severity ranging from malformed central finger/toe to a lobster claw-like appearance of the hands and feet. It can occur as an isolated malformation or it can be a feature in various syndromes.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enIsolated split hand-split foot malformationEctrodactyly · SHFM · Split hand foot malformation
frMalformation des mains et pieds fendus isoléeEctrodactylie · SHFM
deIsolierte Spalthand-Spaltfuß-FehlbildungEktrodaktylie · SHFM · Spalthand-Spaltfuß-Fehlbildung
esMalformación aislada de mano hendida-pie hendidoEctrodactilia · Malformación de manos y pies hendidos · SHFM
itMalformazione da schisi delle mani e dei piediDeformità a chela di aragosta · Ectrodattilia · Mani deformi a chela di aragosta · Mani e piedi deformi a chela di aragosta · SHFM
nlGeïsoleerde gespleten hand-gespleten voet malformatieEctrodactylie · Gespleten hand-voetmisvorming · SHFM
ptMalformação mão fendida-pé fendido isoladaEctrodactilia das mãos e pés
plRozszczep dłoni i stópDeformacja "szczypce homara · Ektrodaktylia · Malformacja rozszczep dłoni/stopy · SHFM
csRozštěp ruky a nohyEktrodaktylie · SHFM · Klepetovitá ruka či noha
ukІзольована вада розщеплена кисть-розщеплена стопаЕктродактилія · SHFM · Роздвоєна вада розвитку кисті та стопи
zh孤立型手足裂畸形分裂手足畸形
trİzole ayrık el-ayrık ayak malformasyonuSHFM · Ektrodaktili · Bölünmüş el ayak malformasyonu

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM183600Evalidated
OMIM225300BTNTvalidated
OMIM246560BTNTvalidated
OMIM313350BTNTvalidated
OMIM605289BTNTvalidated
OMIM606708BTNTvalidated
ICD-10Q74.8NTBTattributedvalidated
ICD-11LB9BNTBTindexvalidated
MONDO0016576Evalidated
UMLSC0265554Evalidated
GARD6319Evalidated
MedDRA10079827Evalidated

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.

Codes that Orphanet moved or referred to this one:

4

Genes

8 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
BTRCCandidate gene tested inNot yet assessedHGNC:1144ENSG0000016616760348210q24.32beta-transducin repeat containing E3 ubiquitin protein ligase24115638[PMID]_16691619[PMID]
SEM1Candidate gene tested inNot yet assessedHGNC:10845ENSG000001279226012857q21.3SEM1 26S proteasome subunit23169702[PMID]
EPS15L1Disease-causing germline mutation(s) (loss of function) inAssessedHGNC:24634ENSG0000012752761682619p13.11epidermal growth factor receptor pathway substrate 15 like 129023680[PMID]
DLX5Disease-causing germline mutation(s) inAssessedHGNC:2918ENSG000001058806000287q21.3distal-less homeobox 524496061[PMID]
DLX6Disease-causing germline mutation(s) inAssessedHGNC:2919ENSG000000063776000307q21.3distal-less homeobox 628611547[PMID]
TP63Disease-causing germline mutation(s) inAssessedHGNC:15979ENSG000000732826032733q28tumor protein p6310839977[PMID]
WNT10BDisease-causing germline mutation(s) inAssessedHGNC:12775ENSG0000016988460190612q13.12Wnt family member 10B18515319[PMID]_20635353[PMID]
FBXW4Role in the phenotype ofAssessedHGNC:10847ENSG0000010782960807110q24.32F-box and WD repeat domain containing 416235095[PMID]
5

Prevalence and incidence

6 records
TypeClassValueAreaQualificationValidationSource
Prevalence at birth1-9 / 100 0005.4 / 100 000EuropeValue and classValidated8766141[PMID]_EUROCAT European surveillance of congenital anomalies[OTHER]
Prevalence at birth1-5 / 10 00016.4 / 100 000ChinaValue and classValidated20506663[PMID]
Prevalence at birth1-9 / 100 0005.1 / 100 000CanadaValue and classValidated20506663[PMID]
Prevalence at birth1-9 / 100 0006 / 100 000HungaryValue and classValidatedISBN:9630566311[OTHER]
Prevalence at birth1-9 / 100 0006 / 100 000United StatesValue and classValidated11581472[PMID]
Point prevalence1-9 / 100 000—EuropeClass 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

8 annotations · validated 2024-10-09
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0012165Oligodactyly
Frequent (79-30%)
HP:0006101Finger syndactyly
HP:0004058Hand monodactyly
HP:0001839Split foot
Occasional (29-5%)
HP:0004050Absent hand
HP:0000526Aniridia
HP:0000407Sensorineural hearing impairment
HP:0001171Split hand

Run the differential on the 1 obligate / very frequent terms

Annotation source: 24115638[PMID]

7

Sources for this card