raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:93606

Nephrogenic syndrome of inappropriate antidiuresis

Synonyms: NSIAD

Type
Disease
Group
Disorder
Inheritance
X-linked recessive
Age of onset
Childhood
Status
active

Nephrogenic syndrome of inappropriate antidiuresis (NSIAD) is a rare genetic disorder of water balance, closely resembling the far more frequent syndrome of inappropriate antidiuretic secretion (SIAD), and characterized by euvolemic hypotonic hyponatremia due to impaired free water excretion and undetectable or low plasma arginine vasopressin (AVP) levels.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enNephrogenic syndrome of inappropriate antidiuresisNSIAD
frSyndrome néphrogénique d'antidiurèse inappropriée= en
deNephrogenes Syndrom mit unverhältnismäßiger Antidiurese= en
esSíndrome nefrogénico de antidiuresis inapropiada (NSIAD)
itSindrome nefrogenica da antidiuresi non appropriata= en
nlNefrogeen syndroom van inadequate antidiurese= en
ptSíndrome nefrogénico de antidiurese inapropriada (NSIAD)
plZespół nerczycowy z nieprawidłową antydiurezą= en
csNefrogenní syndrom s nepřiměřenou antidiurézou= en
ukНефрогенний синдром неадекватного антидіурезу= en
zh抗利尿不适当肾病综合征= en
trUygunsuz antidiürezin nefrojenik sendromu= en

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM300539Evalidated
ICD-10E22.2NTBTattributedvalidated
ICD-115A60.20Especificvalidated
MONDO0010356Evalidated
MeSHC564491Evalidated
UMLSC1845202Evalidated
GARD10306Evalidated

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
AVPR2Disease-causing germline mutation(s) (gain of function) inAssessedHGNC:897ENSG00000126895300538Xq28arginine vasopressin receptor 217229917[PMID]
5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families21 casesWorldwideCase(s)Validated22722264[PMID]_[EXPERT]
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

Orphanet has no HPO annotation for this code in this release.

7

Sources for this card