GRIK3 and Anxiety: Three gene-level associations showed a greater level of association with their respective neuroticism phenotypes than the unstratified GWAS (General factor of neuroticism H-haplogroup, GRIK3, P = 2.36 × 10−6, anxiety/tension T-haplogroup, DEFB132, P = 6.50 × 10−7, worry/vulnerability K-haplogroup, PCCB, P = 1.46 × 10−6).