raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:163966

X-linked dominant chondrodysplasia, Chassaing-Lacombe type

Synonyms: X-linked dominant chondrodysplasia-hydrocephaly-microphthalmia syndrome

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

X-linked dominant chondrodysplasia Chassaing-Lacombe type is a rare genetic bone disorder characterized by chondrodysplasia, intrauterine growth retardation (IUGR), hydrocephaly and facial dysmorphism in the affected males.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enX-linked dominant chondrodysplasia, Chassaing-Lacombe typeX-linked dominant chondrodysplasia-hydrocephaly-microphthalmia syndrome
frChondrodysplasie dominante liée à l'X type Chassaing-LacombeSyndrome de chondrodysplasie dominante lié à l'X-hydrocéphalie-microphtalmie
deChondrodysplasie, X-chromosomal-dominante, Typ Chassaing-Lacombe
esCondrodisplasia dominante ligada al cromosoma X tipo Chassaing-LacombeCondrodisplasia dominante ligada al cromosoma X-hidrocefalia-microftalmia
itCondrodisplasia dominante legata all'X, tipo Chassaing-LacombeCondrodisplasia dominante legata all'X - idrocefalia - microftalmia
nlX-gebonden dominante chondrodysplasie, Chassaing-Lacombe-typeX-gebonden dominante chondrodysplasie - hydrocefalie - microftalmie-syndroom
ptCondrodisplasia dominante ligada ao X, tipo Chassaing-LacombeSíndrome de condrodisplasia dominante ligada ao X-hidrocefalia-microftalmia
plDominująca chondrodysplazja sprzężona z chromosomem X, typ Chassainga i Lacombe'aDominująca chondrodysplazja sprzężona z chromosomem X - wodogłowie - małoocze
csX-vázaná dominantní chondrodysplázie, Chassaingův-Lacombův typSyndrom zahrnující X-vázanou dominantní chondrodysplázii, hydrocefalus a mikroftalmii · X-vázaná dominantní chondrodysplázie, Chassaing-Lacombův typ
ukХ-зчеплена домінантна хондродисплазія, тип Шассена-ЛакомбаХ-зчеплений домінантний синдром хондродисплазії-гідроцефалії-мікрофтальмії
zhChassaing-Lacombe型X连锁显性软骨发育不良X连锁显性遗传软骨发育不良-脑积水-小眼畸形综合征
trX'e bağlı dominant kondrodisplazi, Chassaing-Lacombe tipiX'e bağlı baskın kondrodisplazi-hidrosefali-mikroftalmi sendromu

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM300863Evalidated
ICD-10Q78.8NTBTattributedvalidated
ICD-11LD24.ANTBTattributedvalidated
MONDO0010463Evalidated
UMLSC4304401Evalidated

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 (3):

No children.

4

Genes

1 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
HDAC6Disease-causing germline mutation(s) inAssessedHGNC:14064ENSG00000094631300272Xp11.23histone deacetylase 620181727[PMID]
5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families10 casesWorldwideCase(s)Validated16001442[PMID]_[EXPERT]
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

24 annotations · validated 2016-06-01
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0000457Depressed nasal ridge
HP:0002007Frontal bossing
HP:0000238Hydrocephalus
HP:0002866Hypoplastic iliac wing
HP:0000369Low-set ears
HP:0005871Metaphyseal chondrodysplasia
HP:0006028Metaphyseal cupping of metacarpals
HP:0000568Microphthalmia
HP:0000926Platyspondyly
HP:0008905Rhizomelia
HP:0001773Short foot
HP:0003196Short nose
HP:0004279Short palm
HP:0004322Short stature
Frequent (79-30%)
HP:0008364Abnormality of the calcaneus
HP:0001522Death in infancy
HP:0001256Intellectual disability, mild
HP:0001511Intrauterine growth retardation
HP:0000883Thin ribs
Occasional (29-5%)
HP:0001321Cerebellar hypoplasia
HP:0000962Hyperkeratosis
HP:0000347Micrognathia
HP:0000322Short philtrum
HP:0000154Wide mouth

Run the differential on the 12 obligate / very frequent terms

7

Sources for this card