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MS
BCKDHA/B, DBT AR unreviewed

Maple syrup urine disease

BCAA catabolism

Enzyme or protein defect

Branched-chain alpha-ketoacid dehydrogenase

Accumulates or becomes deficient

Branched-chain alpha-keto acids (esp. leucine)

Key features

Burnt-sugar/maple urine odour, poor feeding, ketoacidosis, encephalopathy

Management

BCAA-restricted diet; thiamine trial

Not clinical guidance. Written from standard clinical biochemistry, not from the uploaded documents, and marked unreviewed. Teaching-level reference for study and database seeding only. It must not be used to manage a patient.

Recent literature

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