raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:600668

CCNK-related neurodevelopmental disorder-severe intellectual disability-facial dysmorphism syndrome

Type
Disease
Group
Disorder
Inheritance
Autosomal dominant
Age of onset
Neonatal
Status
active

A rare multiple congenital anomalies/dysmorphic syndrome characterized by developmental delay, severe intellectual disability, severe speech and communication problems and distinctive dysmorphic faces (high hairline, thin eyebrows, hypertelorism, dysmorphic ears, broad nasal bridge and tip, and narrow jaw). Height is not affected. Some patients may also present autistic behaviors.

1

Names in Orphadata languages

11 of 12 languages
LangNameSynonyms
enCCNK-related neurodevelopmental disorder-severe intellectual disability-facial dysmorphism syndrome
frSyndrome de trouble neurodéveloppemental-déficience intellectuelle sévère-dysmorphisme facial associé à CCNK
deCCNK-abhängige neurologische Entwicklungsstörung-schwere Intelligenzminderung-Gesichtsdysmorphie-Syndrom
esSíndrome de trastorno del neurodesarrollo-discapacidad intelectual grave-dismorfia facial asociado a CCNK
itMalattia sindromica del neurosviluppo, grave disabilità intellettiva e dismorfismi facciali correlata a CCNK
nlCCNK-gerelateerd syndroom van neurologische ontwikkelingsstoornis - ernstige intellectuele achterstand - faciale dysmorfie
ptSíndrome de perturbação do neurodesenvolvimento-perturbação grave do desenvolvimento intelectual-dismorfia facial CCNK-relacionada
plZespół zaburzenia neurorozwojowego, znacznej niepełnosprawności intelektualnej oraz dysmorfii twarzy związany z CCNK
csSyndrom zahrnující neurovývojovou poruchu související s CCNK, těžkou mentální retardaci a obličejový dysmorfismus
ukCCNK-повязаний синдром порушення нейророзвитку-тяжкої розумової відсталості-лицьового дизморфізму
trCCNK-related neurodevelopmental disorder-severe intellectual disability-facial dysmorphism syndrome

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM618147Evalidated
ICD-10G93.8NTBTattributedvalidated
MONDO0035775Evalidated
UMLSC5681527Evalidated

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 (2):

No children.

4

Genes

1 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
CCNKDisease-causing germline mutation(s) inAssessedHGNC:1596ENSG0000009006160354414q32.2cyclin K30122539[PMID]
5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families4 casesWorldwideCase(s)Validated30122539[PMID]
Point prevalence<1 / 1 000 000—WorldwideClass onlyValidated30122539[PMID]_ORPHANET

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