RNAseq Transcriptomic Analyses of European Ancestry Samples in MGS Dataset

Schizophrenia is a common and severe psychotic disorder. While some common SNPs and rare copy number variants have been identified as being significantly associated with disease risk, the biological mechanisms remain undefined. To identify gene expression abnormalities in schizophrenia, we generated whole-genome gene expression profiles using RNAseq on lymphoblastoid cell lines from schizophrenia cases and controls of European ancestry. Subsets of these data have been used in three studies: (1) gene expression outliers (extreme tails of the distribution of transcript expression values) in 634 cases and 713 controls (PMID: 26022996); (2) baseline differential gene expression by affection status in 529 cases and 660 controls (PMID: 28418402); and (3) baseline versus dopamine stimulated differential gene expression by affection status in 514 cases and 690 controls (PMID: 30115913). Various classes of classes were enriched in the differentially expressed genes, especially brain expressed genes and genes related to immune processes.]]>
These are described in detail in the following manuscripts and their supplementary materials: Duan J, Sanders AR, Moy W, Drigalenko EI, Brown EC, Freda J, Leites C, Göring HH; MGS, Gejman PV. Transcriptome outlier analysis implicates schizophrenia susceptibility genes and enriches putatively functional rare genetic variants. Hum Mol Genet. 2015 Aug 15;24(16):4674-85. doi: 10.1093/hmg/ddv199. Epub 2015 May 28. PMID: 26022996. PMCID: PMC4512633. Sanders AR, Drigalenko EI, Duan J, Moy W, Freda J, Göring HHH, Gejman PV. Transcriptome sequencing study implicates immune-related genes differentially expressed in schizophrenia: new data and a meta-analysis. Transl Psychiatry. 2017 Apr 18;7(4):e1093. doi: 10.1038/tp.2017.47. PMID: 28418402. PMCID: PMC5416689. Duan J, Göring HHH, Sanders AR, Moy W, Freda J, Drigalenko EI, Kos M, He D, Gejman PV; MGS. Transcriptomic signatures of schizophrenia revealed by dopamine perturbation in an ex vivo model. Transl Psychiatry. 2018 Aug 16;8(1):158. doi: 10.1038/s41398-018-0216-5. PMID: 30115913. PMCID: PMC6095865. ]]>