raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:210110

Intermediate osteopetrosis

Synonyms: Autosomal recessive intermediate osteopetrosis

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

A rare, genetic primary bone dysplasia with increased bone density characterized by susceptibility to fractures after minor trauma, anemia, and characteristic skeletal radiographic changes, such as sandwich vertebra, bone-within-bone appearance, Erlenmeyer-shaped femoral metaphysis, and mild osteosclerosis of the skull base. Dental anomalies and visual impairment secondary to optic nerve compression have been rarely described.

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Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enIntermediate osteopetrosisAutosomal recessive intermediate osteopetrosis
frOstéopétrose intermédiaireOstéopétrose intermédiaire autosomique récessive
deOsteopetrosis, intermediäreOsteopetrosis, intermediäre, autosomal-rezessive
esOsteopetrosis intermediaOsteopetrosis intermedia autosómica recesiva
itOsteopetrosi intermediaOsteopetrosi intermedia autosomica recessiva
nlIntermediaire osteopetroseAutosomaal recessieve intermediaire osteopetrose
ptOsteopetrose intermédia
plOsteopetroza pośredniaAutosomalna recesywna osteopetroza pośrednia
csOsteopetróza, středně závažný typAutozomálně recesivní přechodná osteopetróza · Autozomálně recesivní osteopetróza, typ 6
ukПомірно виражений остеопетрозАутосомно-рецесивний проміжний остеопетроз
zh中间型骨硬化病常染色体隐性遗传中间型骨硬化病
trOrta derecede osteopetrozOtozomal Çekinik orta düzey osteopetroz

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM611497Evalidated
ICD-10Q78.2NTBTattributedvalidated
ICD-11LD24.10NTBTindexvalidated
MONDO0012679Evalidated
UMLSC0432261Evalidated
GARD4156Evalidated

E exact · NTBT this ORPHAcode is narrower than the target · BTNT broader than the target · ND not decided.

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Classification

Preferential parent (Orphanet linearisation):

Parents in the classifications (2):

No children.

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Genes

3 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
CLCN7Disease-causing germline mutation(s) inAssessedHGNC:2025ENSG0000010324960272716p13.3Cl-/H+ antiporter 712522560[PMID]_20301306[PMID]
PLEKHM1Disease-causing germline mutation(s) inAssessedHGNC:29017ENSG0000022519061146617q21.31pleckstrin homology and RUN domain containing M117404618[PMID]
TCIRG1Disease-causing germline mutation(s) inAssessedHGNC:11647ENSG0000011071960459211q13.2T cell immune regulator 1, ATPase H+ transporting V0 subunit a324535816[PMID]_25829125[PMID]
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Prevalence and incidence

1 record
TypeClassValueAreaQualificationValidationSource
Point prevalenceUnknown—WorldwideClass onlyNot yet validatedORPHANET

Value is Orphadata's ValMoy: the mean estimate per 100 000 for prevalence and incidence, the number of cases or families for case reports.

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HPO phenotypes

23 annotations · validated 2019-07-02
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0004348Abnormality of bone mineral density
Frequent (79-30%)
HP:0003418Back pain
HP:0005652Cortical sclerosis
HP:0004975Erlenmeyer flask deformity of the femurs
HP:0005789Generalized osteosclerosis
HP:0002659Increased susceptibility to fractures
HP:0005746Osteosclerosis of the base of the skull
HP:0002757Recurrent fractures
HP:0004618Sandwich appearance of vertebral bodies
Occasional (29-5%)
HP:0000707Abnormality of the nervous system
HP:0001903Anemia
HP:0003155Elevated circulating alkaline phosphatase concentration
Very rare (<4-1%)
HP:0006482Abnormal dental morphology
HP:0000164Abnormality of the dentition
HP:0031035Chronic infection
HP:0001293Cranial nerve compression
HP:0000689Dental malocclusion
HP:0001433Hepatosplenomegaly
HP:0007958Optic atrophy from cranial nerve compression
HP:0002754Osteomyelitis
HP:0000505Visual impairment
Excluded (0%)
HP:0002901Hypocalcemia
HP:0001873Thrombocytopenia

Run the differential on the 1 obligate / very frequent terms

Annotation source: 20301306[PMID]_28975865[PMID]_28819563[PMID]_17404618[PMID]

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Sources for this card