raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:628

Diastrophic dysplasia

Synonyms: Diastrophic dwarfism

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

A rare osteochondrodysplasia characterized by shortened limbs, normal sized head, short stature with short extremities (final adult height is 120cm +/- 20cm), spinal deformities and joint malformations leading to multiple joint contractures (principally involving the shoulders, elbows, interphalangeal joints and hips). The name indicates the ''twisted'' appearance of the spine and limbs in severe forms that is peculiar of this condition.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enDiastrophic dysplasiaDiastrophic dwarfism
frNanisme diastrophiqueDysplasie diastrophique
deDysplasie, diastropheKleinwuchs, diastrophischer
esDisplasia diastróficaEnanismo diastrófico
itDisplasia diastroficaNanismo diastrofico
nlDiastrofische dysplasieDiastrofische dwerggroei
ptDisplasia diastróficaNanismo diastrófico
plKarłowatość/Niskorosłość diastroficznaDysplazja diastroficzna
csDiastrofický dwarfismusDiastrofická dysplázie
ukДіастрофічна дисплазіяДіастрофічна карликовість
zh畸形性侏儒畸型发育不全
trDiastrofik cücelikDiyastrofik displazi

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM222600Evalidated
ICD-10Q77.5Especificvalidated
ICD-11LD24.03Especificvalidated
MONDO0009107Evalidated
MeSHC536170Evalidated
UMLSC0220726Evalidated
GARD6275Evalidated
MedDRA10081228Evalidated

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
SLC26A2Disease-causing germline mutation(s) (loss of function) inAssessedHGNC:10994ENSG000001558506067185q32solute carrier family 26 member 220301524[PMID]
5

Prevalence and incidence

3 records
TypeClassValueAreaQualificationValidationSource
Point prevalence1-9 / 100 0001.2 / 100 000EuropeValue and classValidated[EXPERT]
Prevalence at birth1-9 / 1 000 0000.3 / 100 000EuropeValue and classValidatedEUROCAT European surveillance of congenital anomalies 2005-2012[OTHER]
Point prevalence1-9 / 100 0003.03 / 100 000FinlandValue and classValidated1948373[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

64 annotations · validated 2024-04-03
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0003312Abnormal form of the vertebral bodies
HP:0005916Abnormal metacarpal morphology
HP:0000944Abnormal metaphysis morphology
HP:0000772Abnormal rib morphology
HP:0005930Abnormality of epiphysis morphology
HP:0000889Abnormality of the clavicle
HP:0006487Bowing of the long bones
HP:0005280Depressed nasal bridge
HP:0008434Hypoplastic cervical vertebrae
HP:0011001Increased bone mineral density
HP:0001511Intrauterine growth retardation
HP:0009748Large earlobe
HP:0000256Macrocephaly
HP:0002983Micromelia
HP:0011800Midface retrusion
HP:0008921Neonatal short-limb short stature
HP:0009623Proximal placement of thumb
HP:0002650Scoliosis
HP:0009381Short finger
HP:0004322Short stature
HP:0009773Symphalangism affecting the phalanges of the hand
Frequent (79-30%)
HP:0000592Blue sclerae
HP:0100490Camptodactyly of finger
HP:0002947Cervical kyphosis
HP:0005857Cervical spina bifida
HP:0000175Cleft palate
HP:0000293Full cheeks
HP:0002857Genu valgum
HP:0001385Hip dysplasia
HP:0001234Hitchhiker thumb
HP:0000316Hypertelorism
HP:0001252Hypotonia
HP:0034392Joint contracture
HP:0001373Joint dislocation
HP:0001387Joint stiffness
HP:0002808Kyphosis
HP:0002938Lumbar hyperlordosis
HP:0000396Overfolded helix
HP:0000358Posteriorly rotated ears
HP:0002205Recurrent respiratory infections
HP:0001852Sandal gap
HP:0001762Talipes equinovarus
HP:0005619Thoracolumbar kyphosis
HP:0009465Ulnar deviation of finger
HP:0000430Underdeveloped nasal alae
Occasional (29-5%)
HP:0006536Airway obstruction
HP:0001156Brachydactyly
HP:0000337Broad forehead
HP:0002514Cerebral calcification
HP:0004209Clinodactyly of the 5th finger
HP:0000028Cryptorchidism
HP:0000494Downslanted palpebral fissures
HP:0003042Elbow dislocation
HP:0000365Hearing impairment
HP:0009890High anterior hairline
HP:0000974Hyperextensible skin
HP:0001382Joint hypermobility
HP:0000347Micrognathia
HP:0000160Narrow mouth
HP:0000460Narrow nose
HP:0002093Respiratory insufficiency
HP:0002176Spinal cord compression
HP:0000402Stenosis of the external auditory canal
HP:0100761Visceral angiomatosis

Run the differential on the 12 obligate / very frequent terms

Annotation source: 20301524[PMID]_23657516[PMID]

7

Sources for this card