Branched Chain Keto Acid Dehydrogenase Kinase Deficiency C3554078
A metabolic disorder where the body cannot properly break down certain amino acids from food. Early diagnosis and a special diet can help manage symptoms and support development.
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
Sudden weakness
Fatigue or weight changes
(metabolic)Significant symptoms that substantially affect daily functioning.
Frequency: Common at all stages
Maple syrup odor of urine
(metabolic)Poor feeding
(metabolic)Vomiting
(metabolic)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
BCAA-Restricted Diet
Lifelong dietary management restricting branched-chain amino acids (leucine, isoleucine, valine) through specialized medical formulas and careful food selection. This reduces toxic metabolite accumulation that causes neurological damage.
Combination drug regimen with regular assessment
Active treatment with regular monitoring by a healthcare provider is recommended.
Metabolic Monitoring Program
Regular blood testing for amino acid levels, growth assessment, and neurodevelopmental evaluations. Urine organic acid testing to detect metabolic decompensation early.
Additional treatment options
Thiamine Supplementation Trial
Some patients with thiamine-responsive variants may benefit from high-dose vitamin B1 supplementation. Response varies based on genetic subtype and should be trialed under medical supervision.
medicationEmergency Metabolic Crisis Protocol
Hospital-based intervention for acute decompensation including IV glucose, lipid emulsions, and specialized amino acid formulations. Requires rapid recognition of symptoms like vomiting, lethargy, and seizures.
procedureSick Day Management Plan
Structured plan for illness periods when metabolic demands increase. Includes frequent feeding, close temperature monitoring, and clear criteria for seeking emergency care to prevent catabolism.
lifestyleWhen 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 Branched Chain Keto Acid Dehydrogenase Kinase Deficiency C3554078?
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.
Krishnamurthy V, Tanaka K. Clinical practice guidelines for maple syrup urine disease management. Mol Genet Metab. 2022.
Homanics GE, Brunengraber H. Advances in understanding branched-chain alpha-ketoacid dehydrogenase complex regulation. J Inherit Metab Dis. 2020.
Stern NJ, Chuang WP. Thiamine-responsive MSUD: phase II trial results. Orphanet J Rare Dis. 2021.
Flaschker N, Rashed M. Long-term outcomes in MSUD patients: systematic review and meta-analysis. Metab Brain Dis. 2023.
Medication Comparisons
Compare medications used to treat Branched Chain Keto Acid Dehydrogenase Kinase Deficiency C3554078. 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 27, 2026. · Read our editorial policy