raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:633099

PAICS deficiency

Synonyms: Phosphoribosylaminoimidazole carboxylase deficiency

Type
Malformation syndrome
Group
Disorder
Inheritance
Autosomal recessive
Status
active

A rare disorder of purine metabolism characterized by multiple congenital anomalies/dysmorphic features including craniofacial dysmorphism especially of the midface with flat face, low set ears, nasal hypoplasia, low nasal bridge, choanal atresia/stenosis and hypertelorism. Other malformations include, esophageal atresia with or without treacheoesophageal fistula, as well as malformations of ribs, lungs, vertebrae, legs, toes and fingers.

1

Names in Orphadata languages

10 of 12 languages
LangNameSynonyms
enPAICS deficiencyPhosphoribosylaminoimidazole carboxylase deficiency
frDéficience en PAICSDéficience en phosphoribosylaminoimidazole carboxylase
dePhosphoribosylaminoimidazol-Carboxylase-MangelPAICS-Defizienz · PAICS-Mangel
esDeficiencia PAICSDeficiencia de fosforribosil-aminoimidazol-carboxilasa
itDeficit di PAICSDeficit di fosforibosil-aminoimidazolo carbossilasi
nlPAICS-deficiëntieDeficiëntie van fosforibosylaminoimidazool-carboxylase
ptDeficiência PAICSDeficiência de fosforribosil aminoimidazole carboxilase
plNiedobór PAICS= en
csDeficit PAICS= en
ukДефіцит PAICSДефіцит фосфорибозиламіноімідазолкарбоксилази

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM619859Evalidated
ICD-10E79.8NTBTattributedvalidated
ICD-115C55.0YNTBTattributedvalidated
MONDO0859003Evalidated
UMLSC1291561Evalidated

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 (3):

No children.

4

Genes

1 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
PAICSDisease-causing germline mutation(s) inAssessedHGNC:85874q12phosphoribosylaminoimidazole carboxylase and phosphoribosylaminoimidazolesuccinocarboxamide synthase31600779[PMID]
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Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families3 casesWorldwideCase(s)Validated39726239[PMID]
Point prevalence<1 / 1 000 000—WorldwideClass onlyValidated39726239[PMID]_ORPHANET

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.

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Sources for this card