raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:2501

Metaphyseal chondrodysplasia, Spahr type

Type
Disease
Group
Disorder
Inheritance
Autosomal recessive
Age of onset
Childhood
Status
active

A rare, genetic, primary bone dysplasia disease characterized by usually moderate, postnatal short stature, progressive genu vara deformity, a waddling gait, and radiological signs of metaphyseal dysplasia (i.e. irregular, sclerotic and widened metaphyses), in the absence of biochemical abnormalities suggestive of rickets disease. Intermittent knee pain, lordosis, and delayed motor development may also occasionally be associated.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enMetaphyseal chondrodysplasia, Spahr type
frChondrodysplasie métaphysaire type Spahr
deChondrodysplasie, metaphysäre, Typ Spahr
esCondrodisplasia metafisaria tipo Spahr
itCondrodisplasia metafisaria tipo Spahr
nlMetafysaire chondrodysplasie, Spahr-type
ptCondrodisplasia metafisária, tipo Spahr
plChondrodysplazja przynasadowa typu Spahra
csMetafyzární chondrodysplázie, Spahrův typ
ukМетафізарна хондродисплазія, тип Шпара
zh干骺端软骨发育不良Spahr型
trMetafizer kondrodisplazi, Spahr tipi

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM250400Evalidated
ICD-10Q78.5NTBTattributedvalidated
ICD-11LD24.7NTBTindexvalidated
MONDO0009597Evalidated
MeSHC537353Evalidated
UMLSC0432225Evalidated
GARD3563Evalidated

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
MMP13Disease-causing germline mutation(s) (loss of function) inAssessedHGNC:7159ENSG0000013774560010811q22.2matrix metallopeptidase 1324648384[PMID]
5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families18 casesWorldwideCase(s)Validated24648384[PMID]_2225533[PMID]_19615667[PMID]_24781753[PMID]_18553549[PMID]
Point prevalence<1 / 1 000 000—WorldwideClass onlyValidatedORPHANET_24648384[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

17 annotations · validated 2016-06-01
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0000944Abnormal metaphysis morphology
HP:0006487Bowing of the long bones
HP:0002750Delayed skeletal maturation
HP:0003498Disproportionate short stature
HP:0001288Gait disturbance
HP:0002970Genu varum
HP:0001385Hip dysplasia
HP:0003307Hyperlordosis
HP:0005871Metaphyseal chondrodysplasia
HP:0100255Metaphyseal dysplasia
HP:0006409Progressive leg bowing
HP:0004349Reduced bone mineral density
HP:0006385Short lower limbs
Frequent (79-30%)
HP:0005930Abnormality of epiphysis morphology
HP:0000164Abnormality of the dentition
HP:0000670Carious teeth
HP:0002650Scoliosis

Run the differential on the 12 obligate / very frequent terms

7

Sources for this card