raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:93602

Xanthinuria type II

Synonyms: XDH and AOX dual deficiency · Xanthine dehydrogenase and xanthine aldehyde oxidase dual deficiency

Type
Etiological subtype
Group
Subtype of disorder
Inheritance
Autosomal recessive
Status
active

Type II xanthinuria, a type of classical xanthinuria, is a rare autosomal recessive disorder of purine metabolism characterized by the deficiency of both xanthine dehydrogenase and aldehyde oxidase, leading to the formation of urinary xanthine urolithiasis and leading, in some patients, to kidney failure. Other less common manifestations include arthropathy, myopathy and duodenal ulcer, while some patients remain asymptomatic.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enXanthinuria type IIXDH and AOX dual deficiency · Xanthine dehydrogenase and xanthine aldehyde oxidase dual deficiency
frXanthinurie type IIDéficit combiné en XDH et AOX · Déficit combiné en xanthine déshydrogenase et xanthine aldéhyde oxydase
deXanthinurie Typ IIXDH- und AOX-Mangel, kombinierter · Xanthin-Dehydrogenase- und Aldehydoxydase-Mangel, kombinierter · Xanthin-Dehydrogenase- und Xanthinoxidase-Mangel
esXantinuria tipo IIDeficiencia dual de xantina deshidrogenasa y xantina aldehido oxidasa
itXantinuria, tipo IIDeficit doppio di xantina deidrogenasi e xantina aldeide ossidasi · Doppio deficit di XDH e AOX
nlXanthinurie type IIXDH en AOX dual-deficiëntie · Xanthinedehydrogenase en xanthine-aldehyde-oxidasedualdeficiëntie
ptXantinúria tipo II
plKsanturia typu IIPodwójny Niedobór dehydrogenazy ksantynowej i oksydazy aldehydowej ksantyny · Podwójny Niedobór XDH i AOX
csXanthinurie, typ IIXDH a AOX duální deficit · Deficit xanthindehydrogenázy a xanthin-aldehydoxidázy
ukКсантинурія, тип IIПодвійний дефіцит ксантиндегідрогенази та ксантин альдегідоксидази · Подвійний дефіцит XDH та AOX
zh黄嘌呤尿症II型黄嘌呤脱氢酶和黄嘌呤醛氧化酶双重缺乏症
trKsantinüri tip IIXDH ve AOX ikili eksikliği · Ksantin dehidrojenaz ve ksantin aldehit oksidaz ikili eksikliği

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM603592Evalidated
ICD-10E79.8NTBTattributedvalidated
ICD-115C55.00NTBTindexvalidated
MONDO0011346Evalidated
MeSHC566358Evalidated
UMLSC1863688Evalidated
GARD5620Evalidated

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 (1):

No children.

4

Genes

1 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
MOCOSDisease-causing germline mutation(s) inAssessedHGNC:18234ENSG0000007564361327418q12.2molybdenum cofactor sulfurase11302742[PMID]_17368066[PMID]
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Prevalence and incidence

0 records

No prevalence record in this release.

6

HPO phenotypes

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

7

Sources for this card