DNA methylation signatures define molecular subtypes of diffuse large B-cell lymphoma.

ABSTRACT: Expression profiling has shown 2 main and clinically distinct subtypes of diffuse large B-cell lymphomas (DLBCLs): germinal-center B cell-like (GCB) and activated B cell-like (ABC) DLBCLs. Further work has shown that these subtypes are partially characterized by distinct genetic alterations and different survival. Here, we show with the use of an assay that measures DNA methylation levels of 50,000 CpG motifs distributed among more than 14,000 promoters that these 2 DLBCL subtypes are also characterized by distinct epigenetic profiles. DNA methylation and gene expression profiling were performed on a cohort of 69 patients with DLBCL. After assigning ABC or GCB labels with a Bayesian expression classifier trained on an independent dataset, a supervised analysis identified 311 differentially

SUBMITTER: Shaknovich R 

PROVIDER: S-EPMC2993635 | biostudies-literature | 2010 Nov

REPOSITORIES: biostudies-literature