Genomics

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CLINICOPATHOLOGIC AND MOLECULAR ANALYSIS OF A BCOR-CCNB3+ UNDIFFERENTIATED SARCOMA OF THE KIDNEY REVEALS SIGNIFICANT EPI-GENETIC ALTERATION [miRNA-seq]


ABSTRACT: Undifferentiated soft tissue sarcomas (UDSTS ) are a group of mesenchymal tumors that remain a diagnostic challenge due to their morphologic heterogeneity and unclear histologic origin (Pe-ters et al. 2015b). In this case report, we present the first multi-omics molecular signature for BCOR-CCNB3 sarcomas (BCS) that includes mutation analysis, gene expression, DNA methyla-tion, and mi-RNA expression. We identify a paucity of additonal mutations in this tumor and de-tail that there is significant dysregulation of gene expression of epigeneic remodeling agents in-cluding key members of the PRC, Sin3A/3b, NuRD, and NcoR/SMRT complexes and the DNA methyltransferases DNMT1, DNMT3a, and DNMT3b. This is accompanied by significant DNA methylation changes and dysregulation of multiple miRNA with known links to tumorigenesis. This study significantly increases our understanding of the BCOR effects on fusion positive un-differentiated sarcomas at both the genomic and epigenomic level, and suggests that as better-tailored and more refined treatment algorithms continue to evolve, epigenetic modifying agents should be further evaluated for their efficacy against these tumors.

ORGANISM(S): Homo sapiens

PROVIDER: GSE188553 | GEO | 2021/11/12

REPOSITORIES: GEO

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