raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:2238

Familial isolated hypoparathyroidism

Type
Disease
Group
Disorder
Inheritance
Autosomal dominant, Autosomal recessive, X-linked recessive
Age of onset
All ages
Status
active

A rare heterogeneous group of metabolic disorders characterized by abnormal calcium metabolism causing hypocalcemia due to insufficient serum levels of bioactive parathormone (PTH), without other endocrine disorders or developmental defects.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enFamilial isolated hypoparathyroidism
frHypoparathyroïdie isolée familiale
deHypoparathyreoidismus, familiärer isolierter
esHipoparatiroidismo aislado familiar
itIpoparatiroidismo familiare isolato
nlFamiliale geïsoleerde hypoparathyreoïdie
ptHipoparatiroidismo familiar isolado
plRodzinna izolowana niedoczynność przytarczyc
csFamiliární izolovaná hypoparatyreóza
ukСімейний ізольований гіпопаратиреоз
zh家族性孤立性甲状旁腺功能减退
trAilesel izole hipoparatiroidi

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM146200BTNTvalidated
OMIM307700BTNTvalidated
OMIM601198BTNTvalidated
OMIM615361BTNTvalidated
ICD-10E20.8NTBTattributedvalidated
ICD-115A50.0YNTBTindexvalidated
MONDO0016390Evalidated
MeSHC537156Evalidated
UMLSC1832648Evalidated
GARD2910Evalidated
MedDRA10090580Evalidated

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):

Children (3):

4

Genes

0 direct · 5 via subtypes

Orphanet records no gene directly on this code.

Recorded by Orphanet on subtypes of this disorder:

GeneSubtypeAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
CASRORPHA:428Autosomal dominant hypocalcemiaDisease-causing germline mutation(s) (gain of function) inAssessedHGNC:1514ENSG000000368286011993q13.33-q21.1calcium sensing receptor9920108[PMID]_12733714[PMID]_22789683[PMID]
GNA11ORPHA:428Autosomal dominant hypocalcemiaDisease-causing germline mutation(s) (gain of function) inAssessedHGNC:4379ENSG0000008825613931319p13.3G protein subunit alpha 1123802516[PMID]
GCM2ORPHA:2239Familial isolated hypoparathyroidism due to agenesis of parathyroid glandDisease-causing germline mutation(s) (loss of function) inAssessedHGNC:4198ENSG000001248276037166p24.2GCM transcription factor 211602629[PMID]
AIREORPHA:189466Familial isolated hypoparathyroidism due to impaired PTH secretionDisease-causing germline mutation(s) inAssessedHGNC:360ENSG0000016022460735821q22.3autoimmune regulator28323927[PMID]
PTHORPHA:189466Familial isolated hypoparathyroidism due to impaired PTH secretionDisease-causing germline mutation(s) inAssessedHGNC:9606ENSG0000015226616845011p15.3parathyroid hormone2212001[PMID]_10523031[PMID]_22722080[PMID]
5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families10 familiesWorldwideFamily(ies)ValidatedORPHANET
Point prevalence<1 / 1 000 000—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

19 annotations · validated 2025-01-16
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0100530Abnormality of calcium-phosphate metabolism
HP:0002901Hypocalcemia
HP:0000829Hypoparathyroidism
HP:0003198Myopathy
HP:0001250Seizure
Frequent (79-30%)
HP:0000682Abnormality of dental enamel
HP:0011675Arrhythmia
HP:0000518Cataract
HP:0002514Cerebral calcification
HP:0000684Delayed eruption of teeth
HP:0002905Hyperphosphatemia
HP:0003472Hypocalcemic tetany
HP:0003394Muscle spasm
HP:0001324Muscle weakness
Occasional (29-5%)
HP:0007352Cerebellar calcifications
HP:0031627Globus pallidus calcification
HP:0025425Laryngospasm
HP:0000112Nephropathy
HP:0004322Short stature

Run the differential on the 5 obligate / very frequent terms

Annotation source: 23155703[PMID]_27980765[PMID]_35165722[PMID]_24133354[PMID]

7

Sources for this card