GABRA6 encodes the alpha-6 subunit of GABA(A) receptors, ligand-gated chloride channels that mediate inhibitory neurotransmission in the brain 1. The subunit assembles into heteropentameric complexes containing GABA binding sites at alpha-beta interfaces; GABA activation opens the central pore to allow chloride influx, hyperpolarizing neurons and suppressing action potential generation 1. Alpha-6 subunits localize to both synaptic and extrasynaptic sites, where they contribute to tonic GABAergic inhibition 1. Genetic variants in GABRA6 have substantial clinical relevance. The rs3219151 T allele associates with increased hypothalamic-pituitary-adrenal axis activation during psychological stress, elevated cortisol and ACTH responses, and reduced extraversion 2. In stressed individuals, this allele increases anxiety, depression, and suicide-related phenotypes including suicidal ideation, hopelessness, and insomnia 3. Multiple polymorphisms (rs3219151, c.1512T>C, c.1344C>G) confer idiopathic generalized epilepsy susceptibility in diverse populations 456, and rare variants increase bipolar disorder risk 7. The 1519T>C polymorphism associates with hypercortisolism and abdominal obesity 8. These findings establish GABRA6 as a critical regulator of stress responses and seizure susceptibility with implications for neuropsychiatric disease risk.