raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:228387

Spondylo-megaepiphyseal-metaphyseal dysplasia

Type
Disease
Group
Disorder
Inheritance
Autosomal recessive
Age of onset
Infancy, Neonatal
Status
active

A rare, genetic primary bone displasia characterized by disproportionate short stature with short, stiff neck and trunk and relatively long limbs, fingers and toes (which may present flexion contractures), severe vertebral body ossification delay (with frequent pycnodysostosis), markedly enlarged round epiphyses of the long bones, absent ossification of pubic bones and multiple pseudoepiphyses of the short tubular bones in hands and feet. Neurological manifestations resulting from cervical spine instability may be observed.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enSpondylo-megaepiphyseal-metaphyseal dysplasia
frDysplasie spondylo-mégaépiphysaire-métaphysaire
deDysplasie, spondylo-megaepiphysäre-metaepiphysäre
esDisplasia espondilo-megaepifisaria-metafisaria
itDisplasia spondilo-megaepifisaria-metafisaria
nlSpondylo-megaepifysaire-metafysaire dysplasie
ptDisplasia espondilo-megaepifisária-metafisária
plDysplazja kręgosłupowo-wielkonasadowo-nasadowa
csSpondylo-megaepifyzární-metafyzární dysplázie
ukСпондило-мегаепіфізарно-метафізарна дисплазія
zh脊柱-骨骺-干骺端发育不全
trSpondilo-megaepifizyal-metafizer displazi

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM613330Evalidated
ICD-10Q77.7NTBTattributedvalidated
ICD-11LD24.3NTBTattributedvalidated
MONDO0013228Evalidated
MeSHC567639Evalidated
UMLSC2750066Evalidated

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

1 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
NKX3-2Disease-causing germline mutation(s) inAssessedHGNC:951ENSG000001097056021834p15.33NK3 homeobox 220004766[PMID]
5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families19 casesWorldwideCase(s)Validated22791571[PMID]
Point prevalence<1 / 1 000 000—WorldwideClass onlyValidatedORPHANET_22791571[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