Hypervalinemia and Hyperleucine-Isoleucinemia, also known as hypervalinemia or hyperleucine-isoleucinemia, is related to hyperleucine-isoleucinemia and maple syrup urine disease. An important gene associated with Hypervalinemia and Hyperleucine-Isoleucinemia is BCAT2 (Branched Chain Amino Acid Transaminase 2), and among its related pathways/superpathways are Regulation of expression of SLITs and ROBOs and Glucose / Energy Metabolism. Affiliated tissues include brain, and related phenotypes are headache and brisk reflexes