raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:247546

Acute neonatal citrullinemia type I

Synonyms: Acute neonatal citrullinemia type 1 · Early-onset citrullinemia type 1 · Early-onset citrullinemia type I

Type
Clinical subtype
Group
Subtype of disorder
Inheritance
Autosomal recessive
Age of onset
Infancy, Neonatal
Status
active

A severe form of citrullinemia type 1 characterized biologically by hyperammonemia and clinically by progressive lethargy, poor feeding and vomiting, seizures and possible loss of consciousness, within one to a few days of birth, with variable signs of increased intracranial pressure. The condition can lead to significant neurologic deficits.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enAcute neonatal citrullinemia type IAcute neonatal citrullinemia type 1 · Early-onset citrullinemia type 1 · Early-onset citrullinemia type I
frCitrullinémie type I néonatale aiguëCitrullinémie type 1 néonatale aiguë · Citrullinémie type 1 précoce · Citrullinémie type I précoce
deZitrullinämie Typ I, akute neonataleAkute neonatale Zitrullinämie Typ 1 · Citrullinämie Typ 1, früh-beginnende · Citrullinämie, akute neonatale, Typ I
esCitrulinemia neonatal aguda tipo 1Citrulinemia neonatal aguda tipo I
itCitrullinemia neonatale acuta tipo ICitrullinemia classica, tipo 1 · Citrullinemia classica, tipo I · Citrullinemia neonatale acuta tipo 1 · Citrullinemia neonatale acuta, tipo 1
nlAcute neonatale citrullinemie type IAcute neonatale citrullinemie type 1 · Vroeg optredende citrullinemie type 1 · Vroeg optredende citrullinemie type I
ptCitrulinémia neonatal aguda tipo ICitrulinémia neonatal aguda tipo 1 · Citrulinémia tipo 1 de início precoce · Citrulinémia tipo I de início precoce
plOstra citrulinemia noworodkowa typu iCitrulinemia klasyczna typu 1 · Citrulinemia klasyczna typu I · Ostra citrulinemia noworodkowa typu 1 · Ostra noworodkowa cytrulinemia typu I
csAkutní neonatální citrulinémie, typ IAkutní neonatální citrulinémie, typ 1 · Klasická citrulinémie, typ 1 · Klasická citrulinémie, typ I
ukГостра неонатальна цитрулінемія, тип IГостра неонатальна цитрулінемія типу 1 · Ранній початок цитрулінемії типу 1 · Ранній початок цитрулінемії, тип I
zh急性新生儿瓜氨酸血症I型急性新生儿瓜氨酸血症1型
trAkut Yenidoğan sitrülinemi tip IKlasik sitrülinemi tip 1 · Klasik sitrülinemi tip I · Akut yenidoğan sitrülinemi tip 1

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM215700NTBTvalidated
ICD-10E72.2NTBTattributedvalidated
ICD-115C50.A3NTBTindexvalidated
MONDO0016600Evalidated
UMLSC5679618Evalidated

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
ASS1Disease-causing germline mutation(s) (loss of function) inAssessedHGNC:758ENSG000001307076034709q34.11argininosuccinate synthase 120301631[PMID]
5

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