COMT Gene Mutation Symptoms The Catechol-O-Methyltransferase (COMT) gene is essential for breaking down certain brain chemicals called catecholamines, which include dopamine, norepinephrine, and epinephrine. These chemicals act as neurotransmitters—messengers that help nerve cells communicate. COMT ensures that their levels remain balanced, preventing overstimulation or depletion that could affect brain function. However, changes in the COMT […]