raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:3008

Pyruvate carboxylase deficiency

Synonyms: Ataxia with lactic acidosis type 2 · Ataxia with lactic acidosis type II · Leigh necrotizing encephalopathy due to pyruvate carboxylase deficiency · Leigh syndrome due to PC deficiency · Leigh syndrome due to pyruvate carboxylase deficiency

Type
Disease
Group
Disorder
Inheritance
Autosomal recessive, Not applicable
Age of onset
Infancy, Neonatal
Status
active

Pyruvate carboxylase (PC) deficiency is a rare neurometabolic disorder characterized by metabolic acidosis, failure to thrive, developmental delay, and recurrent seizures at an early age in severely affected patients.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enPyruvate carboxylase deficiencyAtaxia with lactic acidosis type 2 · Ataxia with lactic acidosis type II · Leigh necrotizing encephalopathy due to pyruvate carboxylase deficiency · Leigh syndrome due to PC deficiency · Leigh syndrome due to pyruvate carboxylase deficiency
frDéficit en pyruvate carboxylaseAtaxie avec acidose lactique type 2 · Ataxie avec acidose lactique type II · Encéphalopathie nécrosante subaiguë de Leigh par déficit en pyruvate carboxylase · Syndrome de Leigh par déficit en PC · Syndrome de Leigh par déficit en pyruvate carboxylase
dePyruvat-Carboxylase-MangelAtaxie mit Laktatazidose Typ 2 · Leigh-Syndrom durch Pyruvat-Carboxylase-Mangel · Nekrotisierende Enzephalopathie durch Pyruvat-Carboxylase-Mangel
esDeficiencia de piruvato carboxilasaAtaxia con acidosis láctica tipo 2 · Ataxia con acidosis láctica tipo II · Encefalopatía necrosante de Leigh por deficiencia de piruvato carboxilasa · Síndrome de Leigh por deficiencia de PC · Síndrome de Leigh por deficiencia de piruvato carboxilasa
itDeficit di piruvato carbossilasiAtassia con acidosi lattica, tipo 2 · Atassia con acidosi lattica, tipo II · Encefalopatia necrotizzante di Leigh da deficit di piruvato carbossilasi · Sindrome di Leigh da deficit di PC · Sindrome di Leigh da deficit di piruvato carbossilasi
nlDeficiëntie van pyruvaatcarboxylaseAtaxie met lactaatacidose type II · Ataxie met melkzuuracidose type 2 · Ataxie met melkzuuracidose type II · Necrotiserende encefalopathie van Leigh door deficiëntie van pyruvaatcarboxylase · Syndroom van Leigh door PC-deficiëntie · Syndroom van Leigh door deficiëntie van pyruvaatcarboxylase · Ataxie met lactaatacidose type 2
ptDeficiência de piruvato carboxilase
plNiedobór karboksylazy pirogronianowejAtaksja z kwasicą mleczanową typu 2 · Ataksja z kwasicą mleczanową typu II · Martwicza encefalopatia Leigha z powodu niedoboru karboksylazy pirogronianowej · Zespół Leigha z powodu niedoboru karboksylazy pirogronianowej · Zespół Leigha z powodu niedoboru PC
csDeficit pyruvátkarboxylázyAtaxie s laktátovou acidózou, typ 2 · Ataxie s laktátovou acidózou, typ II · Leighova nekrotizující encefalopatie způsobená deficitem pyruvátkarboxylázy · Leighův syndrom způsobený deficitem PC · Leighův syndrom způsobený deficitem pyruvátkarboxylázy
ukДефіцит піруваткарбоксилазиАтаксія з молочнокислим ацидозом типу 2 · Атаксія з молочнокислим ацидозом II типу · Некротизуюча енцефалопатія Лі внаслідок дефіциту піруваткарбоксилази · Синдром Лі внаслідок дефіциту PC · Синдром Лі через дефіцит піруваткарбоксилази
zh丙酮酸羧化酶缺乏丙酮酸羧化酶缺乏所致Leigh坏死性脑病
trPiruvat karboksilaz eksikliğiTip 2 laktik asidozlu ataksi · Tip II laktik asidozlu ataksi · PC eksikliğine bağlı Leigh sendromu · Piruvat karboksilaz eksikliğine bağlı Leigh sendromu · Piruvat karboksilaz eksikliğine bağlı Leigh nekrotizan ensefalopatisi

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM266150Evalidated
ICD-10E74.4NTBTinclusionvalidated
ICD-115C53.03Especificvalidated
MONDO0009949Evalidated
MeSHD015324Evalidated
UMLSC0034341Evalidated
GARD7512Evalidated
MedDRA10077944Evalidated

E exact · NTBT this ORPHAcode is narrower than the target · BTNT broader than the target · ND not decided.

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Classification

Preferential parent (Orphanet linearisation):

Parents in the classifications (2):

Children (3):

4

Genes

0 direct · 3 via subtypes

Orphanet records no gene directly on this code.

Recorded by Orphanet on subtypes of this disorder:

GeneSubtypeAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
PCORPHA:353308Pyruvate carboxylase deficiency, infantile typeDisease-causing germline mutation(s) inAssessedHGNC:8636ENSG0000017359960878611q13.2pyruvate carboxylase20301764[PMID]
PCORPHA:353314Pyruvate carboxylase deficiency, severe neonatal typeDisease-causing germline mutation(s) inAssessedHGNC:8636ENSG0000017359960878611q13.2pyruvate carboxylase20301764[PMID]
PCORPHA:353320Pyruvate carboxylase deficiency, benign typeDisease-causing germline mutation(s) inAssessedHGNC:8636ENSG0000017359960878611q13.2pyruvate carboxylase20301764[PMID]
5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Prevalence at birth1-9 / 1 000 0000.4 / 100 000EuropeValue and classValidatedISBN:79130356[OTHER]
Point prevalenceUnknown—WorldwideClass onlyValidated[EXPERT]

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

70 annotations · validated 2021-01-07
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0032653Elevated lactate:pyruvate ratio
HP:0002151Increased circulating lactate concentration
HP:0003128Lactic acidosis
Frequent (79-30%)
HP:0500231Abnormal CSF pyruvate family amino acid concentration
HP:0500198Decreased CSF glutamine concentration
HP:0012706Elevated brain choline level by MRS
HP:0012707Elevated brain lactate level by MRS
HP:0011966Elevated plasma citrulline
HP:0001508Failure to thrive
HP:0001510Growth delay
HP:0003348Hyperalaninemia
HP:0001987Hyperammonemia
HP:0500149Hyperglutamatemia
HP:0410175Hyperketonemia
HP:0002161Hyperlysinemia
HP:0008358Hyperprolinemia
HP:0500181Hypertaurinemia
HP:0500147Hypoglutaminemia
HP:0500233Increased CSF alanine concentration
HP:0500246Increased CSF citrulline concentration
HP:0500200Increased CSF glutamate concentration
HP:0002490Increased CSF lactate
HP:0012644Increased caudate lactate level
HP:0003542Increased circulating pyruvate concentration
HP:0003648Lacticaciduria
HP:0001942Metabolic acidosis
HP:0012758Neurodevelopmental delay
HP:0012708Reduced brain N-acetyl aspartate level by MRS
HP:0001250Seizure
Occasional (29-5%)
HP:0002793Abnormal pattern of respiration
HP:0007256Abnormal pyramidal sign
HP:0025160Abnormal temper tantrums
HP:0001274Agenesis of corpus callosum
HP:0002039Anorexia
HP:0000741Apathy
HP:0001251Ataxia
HP:0006999Basal ganglia gliosis
HP:0003429CNS hypomyelination
HP:0012698Cerebellar gliosis
HP:0012762Cerebral white matter atrophy
HP:0000722Compulsive behaviors
HP:0001944Dehydration
HP:0025336Delayed ability to sit
HP:0012448Delayed myelination
HP:0100660Dyskinesia
HP:0001332Dystonia
HP:0001262Excessive daytime somnolence
HP:0011169Generalized clonic seizure
HP:0001290Generalized hypotonia
HP:0002240Hepatomegaly
HP:0003074Hyperglycemia
HP:0030890Hyperintensity of cerebral white matter on MRI
HP:0003228Hypernatremia
HP:0001943Hypoglycemia
HP:0001252Hypotonia
HP:0012469Infantile spasms
HP:0001249Intellectual disability
HP:0003265Neonatal hyperbilirubinemia
HP:0000639Nystagmus
HP:0007109Periventricular cysts
HP:0002465Poor speech
HP:0000817Reduced eye contact
HP:0002416Subependymal cysts
HP:0002789Tachypnea
HP:0030051Tip-toe gait
HP:0001337Tremor
HP:0002119Ventriculomegaly
HP:0002013Vomiting
Very rare (<4-1%)
HP:0001259Coma
HP:0100023Recurrent hand flapping

Run the differential on the 3 obligate / very frequent terms

Annotation source: 30870574[PMID]_20301764[PMID]

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Sources for this card