ABCF1 and schizophrenia: Real-time quantitative PCR (qPCR) experiments were performed in order to validate expression changes of the number one hub gene of the Tan schizophrenia module, ABCF1 as well as the gene with the highest log fold change in this module, GZMH. We used 165 of the same samples as were used for array hybridization for qPCR validation; for a subset of subjects (n = 34) there was no RNA left but we had access to a second blood draw from which RNA had been extracted.