NCIt definition : An autosomal recessive inherited disorder caused by mutations in the BCKDHA, BCKDHB,
DBT, and DLD genes. It is characterized by a deficiency of branched-chain alpha-keto
acid dehydrogenase complex, leading to accumulation of metabolites in the body fluids.
The name of the disease derives from the sweet odor of the urine in infants, reminiscent
of maple syrup. Signs and symptoms usually appear in infancy and include lethargy
and developmental delays. If untreated, it may lead to seizures, coma, and death.;