Studies in bipolar disorder further corroborate the association of GAD1 with mood disorders (rs1978340, rs872123 and rs2241165) [13], [14], but also in schizophrenia, GAD1 alleles were shown to convey genetic risk (rs10432420, rs3749035, rs16823181, rs3791878, rs3791858, rs3749034, rs2270335, rs2241165, rs379850) [15], [16], [17], [18]. Here, GAD1 is linked to bipolar disorder.