ABCF1 and schizophrenia: In addition, real-time qPCR experiments validated expression changes in the number one hub gene in the Tan schizophrenia module, ABCF1, as well as the gene with the highest log fold change, GZMH. Although all modules were found to be preserved, only 2 of the 12 schizophrenia-related modules remained significantly related to disease status in the validation data set of antipsychotic-free samples: the Salmon and Tan module.