DDHD2 and schizophrenia: An additional four shared genes derived by MAGMA were significant after correction in relation to schizophrenia but trended towards significance for BIP (PBIP < 9.25 × 10−4: DDHD2, TMEM110, ITIH4, COG8), while downregulation of SFMBT1 expression trended towards significance for association with risk for both disorders.