raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:2394

Pyruvate dehydrogenase E3 deficiency

Synonyms: DLD deficiency · Dihydrolipoamide dehydrogenase deficiency · E3-deficient maple syrup urine disease

Type
Clinical subtype
Group
Subtype of disorder
Inheritance
Autosomal recessive
Age of onset
Childhood
Status
active

Pyruvate dehydrogenase E3 deficiency is a very rare subtype of pyruvate dehydrogenase deficiency (PDHD) characterized by either early-onset lactic acidosis and delayed development, later-onset neurological dysfunction or liver disease.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enPyruvate dehydrogenase E3 deficiencyDLD deficiency · Dihydrolipoamide dehydrogenase deficiency · E3-deficient maple syrup urine disease
frDéficit en pyruvate déshydrogénase E3Déficit en DLD · Déficit en dihydrolipoamide déshydrogénase · Leucinose avec déficit en E3 · Maladie des urines sirop d'érable avec déficit en E3
dePyruvat-Dehydrogenase E3-MangelAhornsirup-Krankheit, E3-defiziente · DLD-Mangel · Dihydro-Lipoamid-Dehydrogenase-Mangel
esDeficiencia de piruvato deshidrogenasa E3Deficiencia de DLD · Deficiencia de dihidrolipoamida deshidrogenasa · Enfermedad de jarabe de arce con deficiencia de E3
itDeficit di E3 della piruvato deidrogenasiDeficit di DLD · Deficit di diidrolipoamide deidrogenasi · Malattia della urine a sciroppo d'acero con deficit di E3
nlPyruvaatdehydrogenase E3-deficiëntieDLD-deficiëntie · Deficiëntie van dihydrolipoamidedehydrogenase · E3-deficiënte ahornsiroopurineziekte · E3-deficiënte esdoornsiroopurineziekte · E3-deficiënte maple syrup urine disease
ptDeficiência E3 de piruvato desidrogenaseDeficiência de diidrolipoamida desidrogenase
plNiedobór dehydrogenazy pirogronianowej E3Choroba syropu klonowego z deficytem E3 · Niedobór dehydrogenazy dihydrolipoamidowej · Niedobór DLD
csDeficit pyruvátdehydrogenázy - deficit E3 podjednotkyDeficit DLD · Deficit dihydrolipoamiddehydrogenázy · Leucinóza - deficit E3 podjednotky · Nemoc javorového sirupu - deficit E3 podjednotky
ukДефіцит піруватдегідрогенази Е3Дефіцит дигідроліпоаміддегідрогенази · Дефіцит DLD · Е3-дефіцитна хвороба сечі кленового сиропу
zh丙酮酸盐脱氢酶E3缺乏双氢硫辛酰胺脱氢酶缺乏
trPiruvat dehidrojenaz E3 eksikliğiDLD eksikliği · E3 eksikliği olan akçaağaç şurubu idrar hastalığı · Dihidrolipoamid dehidrojenaz eksikliği

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM246900Evalidated
ICD-10E74.4NTBTattributedvalidated
ICD-115C53.02NTBTindexvalidated
MONDO0009529Evalidated
GARD3263Evalidated

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
DLDDisease-causing germline mutation(s) (loss of function) inAssessedHGNC:2898ENSG000000911402383317q31.1dihydrolipoamide dehydrogenase24777537[PMID]
5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families20 casesWorldwideCase(s)Validated[EXPERT]
Point prevalence<1 / 1 000 000—WorldwideClass onlyValidatedORPHANET

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

28 annotations · validated 2017-07-12
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0001290Generalized hypotonia
HP:0002151Increased circulating lactate concentration
HP:0003128Lactic acidosis
HP:0012758Neurodevelopmental delay
HP:0002013Vomiting
Frequent (79-30%)
HP:0002910Elevated circulating hepatic transaminase concentration
HP:0008344Elevated plasma branched chain amino acids
HP:0011968Feeding difficulties
HP:0002480Hepatic encephalopathy
HP:0002240Hepatomegaly
HP:0100724Hypercoagulability
HP:0001943Hypoglycemia
HP:0012402Increased urine alpha-ketoglutarate concentration
HP:0001254Lethargy
HP:0001250Seizure
HP:0001257Spasticity
Occasional (29-5%)
HP:0030872Abnormal cardiac ventricular function
HP:0001251Ataxia
HP:0000708Atypical behavior
HP:0001638Cardiomyopathy
HP:0003234Decreased circulating carnitine concentration
HP:0001508Failure to thrive
HP:0001399Hepatic failure
HP:0001987Hyperammonemia
HP:0010913Hyperisoleucinemia
HP:0000252Microcephaly
HP:0003394Muscle spasm
HP:0007663Reduced visual acuity

Run the differential on the 5 obligate / very frequent terms

Annotation source: 25032271[PMID]_23290025[PMID]

7

Sources for this card