KCNH2 and schizophrenia: Comparing genotypes in KCNH2 SNPs, MANOVAs showed significant main effects on cardiac autonomic parameters in schizophrenia patients for rs11763161 (GG vs. AG vs. AA) (F(12,138) = 1.862, p = 0.044), rs748693 (AA vs. AG vs. GG) (F(12,138) = 2.003, p = 0.028) and rs1036145 (CC vs. CT vs. TT) (F(12,138) = 1.860, p = 0.044).