OLIG2 and schizophrenia: Remarkably, similar to what we have observed in DNA methylation, szDEGs are preferentially found in genes that are significantly differentially expressed between cell types for both NeuN+ (OR = 7.7, FDR = 8 × 10−8) and OLIG2+ (OR = 13, FDR = 7 × 10−13), furthering the functional implication of cell type-specific regulation in schizophrenia.