raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:2637

Microcephalic osteodysplastic primordial dwarfism type II

Synonyms: MOPD type II · Majewski osteodysplastic primordial dwarfism type II

Type
Malformation syndrome
Group
Disorder
Inheritance
Autosomal recessive
Age of onset
Antenatal, Infancy, Neonatal
Status
active

A rare bone disease and a form of microcephalic primordial dwarfism characterized by severe pre- and postnatal growth retardation, with marked microcephaly in proportion to body size, skeletal dysplasia, abnormal dentition, insulin resistance, and increased risk for cerebrovascular disease.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enMicrocephalic osteodysplastic primordial dwarfism type IIMOPD type II · Majewski osteodysplastic primordial dwarfism type II
frNanisme microcéphalique ostéodysplasique primordial type IIMOPD type II · Nanisme microcéphalique ostéodysplasique primordial de Majewski type 2
deKleinwuchs, mikrozephaler osteodysplastischer primordialer, Typ IIMOPD Typ II · Mikrozephaler osteodysplastischer primordialer Kleinwuchs Typ Majewski
esTalla baja significativa primordial osteodisplásica microcefálica tipo IIEnanismo primordial osteodisplásico de Majewski tipo II · Enanismo primordial osteodisplásico microcefálico tipo II · MOPD tipo II
itNanismo primordiale osteodisplastico microcefalico, tipo IIMOPD, tipo II · Nanismo primordiale osteodisplastico di Majewski, tipo II
nlMicrocefale osteodysplastische primordiale dwerggroei type IIMOPD type II · Majewski osteodysplastische primordiale dwerggroei type II
ptNanismo primordial osteodisplásico microcefálico tipo 2
plPierwotna karłowatość osteodysplastyczna mikrocefaliczna typu IIMOPD typu II · Pierwotna karłowatość osteodysplastyczna Majewskiego typu II
csPrimordiální osteodysplastické trpaslictví s mikrocefalií, typ IIMOPD, typ II · Majewského primordiální osteodysplastické trpaslictví, typ II
ukМікроцефальна остеодиспластична первинна карликовість,тип IIОстеодиспластична первинна карликовість Маєвського II типу · MOPD тип II
zh小头骨发育不良先天性侏儒2型小头畸形-骨发育不良-原基性侏儒综合征Ⅱ型
trMikrosefalik osteodisplastik primordiyal cücelik tip IIMOPD tip II · Majewski osteodisplastik primordiyal cücelik tip II

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM210720Evalidated
ICD-10Q87.1NTBTattributedvalidated
ICD-11LD20.2NTBTindexvalidated
MONDO0008872Evalidated
MeSHC565898Evalidated
UMLSC0432246Evalidated
GARD9844Evalidated

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 (4):

No children.

Codes that Orphanet moved or referred to this one:

4

Genes

1 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
PCNTDisease-causing germline mutation(s) (loss of function) inAssessedHGNC:16068ENSG0000016029960592521q22.3pericentrin18174396[PMID]
5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families150 casesWorldwideCase(s)Validated23498563[PMID]
Point prevalenceUnknown—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

52 annotations · validated 2016-06-01
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0000944Abnormal metaphysis morphology
HP:0005930Abnormality of epiphysis morphology
HP:0001620Abnormally high-pitched voice
HP:0009906Aplasia/Hypoplasia of the earlobes
HP:0001156Brachydactyly
HP:0004209Clinodactyly of the 5th finger
HP:0002812Coxa vara
HP:0002750Delayed skeletal maturation
HP:0003498Disproportionate short stature
HP:0002213Fine hair
HP:0001611Hypernasal speech
HP:0002866Hypoplastic iliac wing
HP:0001511Intrauterine growth retardation
HP:0000252Microcephaly
HP:0002983Micromelia
HP:0003275Narrow pelvis bone
HP:0000448Prominent nose
HP:0009804Tooth agenesis
Frequent (79-30%)
HP:0000055Abnormality of female external genitalia
HP:0100840Aplasia/Hypoplasia of the eyebrow
HP:0000958Dry skin
HP:0000293Full cheeks
HP:0001053Hypopigmented skin patches
HP:0001382Joint hypermobility
HP:0000369Low-set ears
HP:0000691Microdontia
HP:0007565Multiple cafe-au-lait spots
HP:0000278Retrognathia
HP:0002650Scoliosis
HP:0000407Sensorineural hearing impairment
HP:0001956Truncal obesity
HP:0000430Underdeveloped nasal alae
HP:0000431Wide nasal bridge
Occasional (29-5%)
HP:0100659Abnormality of the cerebral vasculature
HP:0001903Anemia
HP:0100545Arterial stenosis
HP:0001631Atrial septal defect
HP:0007018Attention deficit hyperactivity disorder
HP:0002617Dilatation
HP:0000494Downslanted palpebral fissures
HP:0001263Global developmental delay
HP:0002079Hypoplasia of the corpus callosum
HP:0001249Intellectual disability
HP:0001601Laryngomalacia
HP:0045025Narrow palpebral fissure
HP:0001643Patent ductus arteriosus
HP:0000826Precocious puberty
HP:0002205Recurrent respiratory infections
HP:0001250Seizure
HP:0001297Stroke
HP:0002777Tracheal stenosis
HP:0002119Ventriculomegaly

Run the differential on the 12 obligate / very frequent terms

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Sources for this card