raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:2272

Ichthyosis-oral and digital anomalies syndrome

historical

Synonyms: Clayton Smith-Donnai syndrome

Type
Malformation syndrome
Group
Disorder
Inheritance
Autosomal recessive
Age of onset
Infancy, Neonatal
Status
historical

A rare genetic multiple congenital anomalies/dysmorphic syndrome characterized by ichthyosis, skeletal and digital anomalies (including flexion deformities of the large joints, proximal interphalangeal joints, absent distal flexion crease of fingers, tapering fingers, hypoplastic toes and nails, dislocatable ankles) and facial dysmorphism (including short forehead, epicanthic folds, small mouth with thin upper lip, midline lower lip groove, and fullness of the lateral eyelids, cleft palate can also be present). Additional clinical features may include developmental delay, generalized hypotonia, feeding difficulties, recurrent chest and gastrointestinal infections. There have been no further descriptions in the literature since 1989.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enIchthyosis-oral and digital anomalies syndromeClayton Smith-Donnai syndrome
frSyndrome d'ichtyose-doigts fusiformes-sillon labial médianSyndrome de Clayton Smith-Donnai
deIchthyose-ungewöhnliches Gesicht-Fingeranomalien-SyndromClayton-Smith-Donnai-Syndrom
esSíndrome de ictiosis-anomalías orales y digitalesSíndrome de Clayton-Smith-Donnai
itIttiosi - anomalie orali e digitaliSindrome di Clayton Smith-Donnai
nlIchthyosis - orale en digitale anomalieën-syndroomSyndroom van Clayton Smith-Donnai
ptSíndrome de ictiose-anomalias orais e digitaisIctiose-dedos fusiformes-fosseta mediana no lábio inferior · Síndrome Clayton-Smith-Donnai
plRybia łuska - anomalie jamy ustnej i kończynZespół Clayton-Smith i Donnai
csSyndrom zahrnující ichtyózu a anomálie úst a prstůClayton-Smithové-Donnaiové syndrom · Clayton-Smith-Donnaiové syndrom
ukСиндром іхтіозу-аномалій роту та пальцівСиндром Клейтона Сміта-Доннаї
zh鱼鳞病-口指畸形综合征Clayton Smith-Donnai综合征
trİktiyoz-oral ve dijital anomaliler sendromuClayton Smith-Donnai sendromu

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM258840Evalidated
ICD-10Q87.8NTBTattributedvalidated
ICD-11LD27.2NTBTindexvalidated
MONDO0009792Evalidated
UMLSC4518538Evalidated
GARD2960Evalidated

E exact · NTBT this ORPHAcode is narrower than the target · BTNT broader than the target · ND not decided.

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Classification

Preferential parent (Orphanet linearisation):

Parents in the classifications (4):

No children.

4

Genes

0 direct

Orphanet records no gene directly on this code.

5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families2 casesWorldwideCase(s)Validated2732996[PMID]
Point prevalence<1 / 1 000 000—WorldwideClass onlyValidatedORPHANET_2732996[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

Orphanet has no HPO annotation for this code in this release.

7

Sources for this card