raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:939

3-hydroxyisobutyric aciduria

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

A rare classic organic aciduria characterized by tissue accumulation and elevation of urinary excretion of 3-hydroxyisobutyric acid. The clinical phenotype ranges from recurrent mild episodes of vomiting with normal cognitive development, to massive acidosis, seizures, and failure to thrive with profound intellectual disability and early death. Dysmorphic craniofacial features (such as microcephaly, triangular face, short, sloping forehead, long, prominent philtrum, and micrognathia) and variable cerebral anomalies have also been described.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
en3-hydroxyisobutyric aciduria
frAcidurie 3-hydroxyisobutyrique
de3-Hydroxy-Isobuttersäure-Krankheit
esAciduria 3 hidroxi-isobutírica
itAciduria 3-idrossi-isobutirrica
nl3-hydroxyisoboterzuuracidurie
ptAcidúria 3-hidroxiisobutírica
plKwasica 3-hydroksyizomasłowa
cs3-hydroxyizobutyrátová acidurie
uk3-гідроксиізомасляна ацидурія
zh3-羟基酸尿症
tr3-hidroksiizobutirik asitüri

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM236795Evalidated
ICD-10E71.1NTBTattributedvalidated
ICD-115C50.E0NTBTindexvalidated
MONDO0009371Evalidated
MeSHC535312Evalidated
UMLSC0342737Evalidated
GARD5662Evalidated

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

0 direct

Orphanet records no gene directly on this code.

5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families13 casesWorldwideCase(s)Validated16466957[PMID]_19650361[PMID]
Point prevalence<1 / 1 000 000—WorldwideClass onlyValidatedORPHANET_16466957[PMID]_19650361[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

15 annotations · validated 2016-06-01
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0000044Hypogonadotropic hypogonadism
HP:0003128Lactic acidosis
Frequent (79-30%)
HP:0000343Long philtrum
HP:0008551Microtia
HP:0000325Triangular face
Occasional (29-5%)
HP:0007360Aplasia/Hypoplasia of the cerebellum
HP:0007370Aplasia/Hypoplasia of the corpus callosum
HP:0002514Cerebral calcification
HP:0002120Cerebral cortical atrophy
HP:0001511Intrauterine growth retardation
HP:0000252Microcephaly
HP:0000347Micrognathia
HP:0001250Seizure
HP:0000340Sloping forehead
HP:0002119Ventriculomegaly

Run the differential on the 2 obligate / very frequent terms

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Sources for this card