GPM6A and depressive symptom measurement: Several SNPs in GPM6A body revealed association with cognitive ability (rs13136969, rs6553899), schizophrenia (rs7673823, rs13142920, rs62334820, rs2333321, rs1106568; rs6846161), depression (rs6818081), neuroticism (rs72704531, rs17611770), and educational attainment (rs1814701, rs17598675, rs4146675)39,40.