raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:141163

Glossopalatine ankylosis

Synonyms: Cosack syndrome

Type
Malformation syndrome
Group
Disorder
Inheritance
Not applicable
Age of onset
Infancy, Neonatal
Status
active

A rare oromandibular-limb hypogenesis syndrome (OLHS) characterised by the presence of an intraoral band of variable thickness attaching the tongue to the hard palate or maxillary alveolar ridge. It may be associated with other abnormalities such as cleft palate (in which case the tongue may be attached to the nasal septum), mandibular hypoplasia, upper-lip hypoplasia, hypodontia and variable limb anomalies (e.g. oligodactyly, syndactyly and polydactyly).

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enGlossopalatine ankylosisCosack syndrome
frAnkylose glossopalatineSyndrome de Cosack
deAnkylose, glossopalatine
esAnquilosis glosopalatinaSíndrome de Cosack
itAnchilosi glossopalatina
nlGlossopalatinale ankyloseSyndroom van Cosack
ptAnquilose glossopalatina
plAnkyloza językowo-podniebiennaZespół Cosacka
csGlosopalatální ankylózaCosackův syndrom
ukГлотково-піднебінний анкілозКозацький синдром
zh舌腭关节强直Cosack综合征
trGlossopalatin ankilozCosack sendromu

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
ICD-10Q38.3NTBTattributedvalidated
ICD-11LD25.0YNTBTindexvalidated
MONDO0015399Evalidated
UMLSC4303569Evalidated
GARD19954Evalidated

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/families30 casesWorldwideCase(s)ValidatedORPHANET
Point prevalence<1 / 1 000 000—WorldwideClass onlyValidatedORPHANET

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