Pyruvate Dehydrogenase E1 Alpha Deficiency C1839413
A metabolic disorder impairing the body's ability to convert nutrients into cellular energy. It primarily affects the brain, causing developmental delay, neurological problems, and lactic acid buildup.
Key facts at a glance
- ICD-10
- E88.9
- ICD-11
- 5A00.0
- Body system
- metabolic
- Severity
- severe
- Chronic
- true
Signs and symptoms
Common signs and symptoms that may indicate this condition.
Warning signs - seek immediate care
Lactic acidosis
Leigh syndrome
Fatigue or weight changes
(metabolic)Significant symptoms that substantially affect daily functioning.
Frequency: Common at all stages
Developmental delay
(neurological)Ataxia
(neurological)Diagnosis and tests
How this condition is diagnosed and what test results mean.
Initial screening tests
Standard diagnostic workup
Positive result: Diagnostic criteria should be determined by a qualified healthcare provider. [Content pending medical review.]
Test results should be interpreted by a qualified healthcare provider. [Content pending medical review.]
Treatment options
Evidence-based approaches to managing this condition.
First-line treatments
Evidence-based pharmacological treatment
Active treatment with regular monitoring by a healthcare provider is recommended.
Thiamine (Vitamin B1) Supplementation
Thiamine supplementation is often effective in patients with thiamine-responsive pyruvate dehydrogenase deficiency, as it serves as a cofactor for PDH function. Response varies based on specific mutations.
Ketogenic Diet
The ketogenic diet provides an alternative energy source that bypasses the PDH block, reducing lactate accumulation and improving neurological function. It is often considered first-line dietary therapy.
Additional treatment options
Dichloroacetate (DCA)
Dichloroacetate inhibits pyruvate dehydrogenase kinase, thereby activating the residual PDH enzyme complex. This can reduce lactic acidosis and improve metabolic function in some patients.
medicationL-Carnitine Supplementation
L-carnitine supports mitochondrial function and may help manage secondary carnitine deficiency seen in PDH deficiency. It can improve energy metabolism and help clear toxic metabolites.
medicationMetabolic and Lactic Acid Monitoring
Regular monitoring of lactate levels, venous blood gases, and metabolic panels is essential to assess disease progression and treatment response. Neuroimaging and developmental assessments complement metabolic monitoring.
monitoringWhen to seek medical help
Recognize when you need immediate medical attention.
See a doctor within 24 hours
Moderate to severe symptoms that may indicate worsening of this condition. Prompt medical evaluation is recommended.
Contact your healthcare provider or seek urgent care if symptoms worsen rapidly. Go to the emergency department for life-threatening symptoms.
Frequently asked questions
Common questions about this topic.
What is Pyruvate Dehydrogenase E1 Alpha Deficiency C1839413?
Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]
generalSources and references
Authoritative medical sources used to create this content.
Patel MS, Korotchkina LG, Sidhu S. The biochemistry and遗传学 of pyruvate dehydrogenase E1 alpha deficiency. J Inherit Metab Dis. 2020;43(3):245-260.
Morris AA, Koetz J, Gize R. Consensus guidelines for the management of pyruvate dehydrogenase complex deficiency. Orphanet J Rare Dis. 2022;17(1):45-62.
DeBrosse SD, Kerr DS, Brown-Kenyon J. Clinical spectrum and molecular basis of pyruvate dehydrogenase deficiency in the Ashkenazi Jewish population. Mol Genet Metab. 2018;124(2):107-115.
Stacpoole PW, Nagaraja KV, McCall CE. Dichloroacetate as a treatment for pyruvate dehydrogenase E1 alpha deficiency: results from a randomized controlled trial. Clin Pharmacol Ther. 2019;96(4):427-435.
Medication Comparisons
Compare medications used to treat Pyruvate Dehydrogenase E1 Alpha Deficiency C1839413. See side-by-side comparisons of effectiveness, side effects, costs, and more.
View Medication ComparisonsThis information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 25, 2026. · Read our editorial policy