raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:163961

X-linked cerebral-cerebellar-coloboma syndrome

Synonyms: X-linked intellectual disability, Kroes type

Type
Disease
Group
Disorder
Inheritance
X-linked recessive
Age of onset
Infancy, Neonatal
Status
active

X-linked cerebral-cerebellar-coloboma syndrome is a rare, genetic syndrome with a cerebellar malformation as major feature characterized by cerebellar vermis hypo- or aplasia, ventriculomegaly, agenesis of corpus callosum and abnormalities of the brainstem and cerebral cortex in association with ocular coloboma. Clinically, patients show hydrocephalus at birth, neonatal hypotonia with abnormal breathing pattern, ocular abnormalities with impaired vision, severe psychomotor delay, and seizures.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enX-linked cerebral-cerebellar-coloboma syndromeX-linked intellectual disability, Kroes type
frSyndrome cérébral-cérébelleux-colobome lié l'XDéficience intellectuelle liée à l'X type Kroes
deX-chromosomales zerebral-zerebelläres-Kolobom-SyndromIntelligenzminderung, X-chromosomale, Typ Kroes
esSíndrome cerebral-cerebeloso-coloboma ligado al cromosoma XDiscapacidad intelectual ligada al cromosoma X tipo Kroes
itSindrome cerebrale-cerebbellare-coloboma legate all'XDisabilità intellettiva legata all'X, tipo Kroes
nlX-gebonden cerebraal-cerebellair-coloboom-syndroomX-gebonden intellectuele achterstand, Kroes-type
ptSíndrome cerebral-cerebeloso-coloboma ligada ao XPerturbação do desenvolvimento intelectual ligada ao X, tipo Kroes
plZespół mózgowo-móżdżkowo-szczelinowy sprzężony z chromosomem XNiepełnosprawność intelektualna sprzężona z chromosomem X, typ Kroesa
csX-vázaná mentální retardace, Kroesové typX-vázaný cerebro-cerebelární syndrom s kolobomy
ukХ-зчеплений церебрально-мозочковий- колобоми синдромХ-зчеплена розумова відсталість, тип Кройса
zhX连锁脑-小脑缺损综合征Kroes型X连锁智力障碍
trX'e bağlı serebral-serebellar-koloboma sendromuX'e bağlı zihinsel yetersizlik, Kroes tipi

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM300864Evalidated
ICD-10Q87.8NTBTattributedvalidated
MONDO0010464Evalidated
UMLSC3275487Evalidated

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.

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Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Point prevalence<1 / 1 000 000—WorldwideClass onlyValidatedORPHANET_15887274[PMID]
Cases/families3 casesWorldwideCase(s)Validated15887274[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.

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HPO phenotypes

31 annotations · validated 2019-08-13
HPOTerm (as annotated by Orphanet)Diagnostic
Frequent (79-30%)
HP:0002363Abnormal brainstem morphology
HP:0002538Abnormality of the cerebral cortex
HP:0005949Apneic episodes in infancy
HP:0001320Cerebellar vermis hypoplasia
HP:0000567Chorioretinal coloboma
HP:0002876Episodic tachypnea
HP:0011968Feeding difficulties
HP:0008947Floppy infant
HP:0001263Global developmental delay
HP:0000238Hydrocephalus
HP:0001249Intellectual disability
HP:0000369Low-set ears
HP:0040288Nasogastric tube feeding
HP:0001250Seizure
HP:0002119Ventriculomegaly
Occasional (29-5%)
HP:0002335Agenesis of cerebellar vermis
HP:0001284Areflexia
HP:0001305Dandy-Walker malformation
HP:0002015Dysphagia
HP:0002007Frontal bossing
HP:0000316Hypertelorism
HP:0002245Meckel diverticulum
HP:0000347Micrognathia
HP:0002033Poor suck
HP:0000358Posteriorly rotated ears
HP:0000278Retrognathia
HP:0003196Short nose
HP:0005815Supernumerary ribs
HP:0009928Thick nasal alae
HP:0007738Uncontrolled eye movements
HP:0007965Undetectable visual evoked potentials

Annotation source: 9832051[PMID]_15887274[PMID]

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Sources for this card