MAO-A Gene: An introduction The MAO-A gene, popularly nicknamed the “warrior gene,” is responsible for the production of an enzyme monoamine oxidase A. (MAOA) It breaks down monoamine neurotransmitters (dopamine, epinephrine, and serotonin) through oxidation. Thus, mutations in the MAO-A gene can directly affect the levels of these neurotransmitters, which can potentially lead to various […]