Genomic and epigenomic heterogeneity in molecular subtypes of gastric cancer

World Journal of Gastroenterology : WJG
Byungho LimSeon-Young Kim

Abstract

Gastric cancer is a complex disease that is affected by multiple genetic and environmental factors. For the precise diagnosis and effective treatment of gastric cancer, the heterogeneity of the disease must be simplified; one way to achieve this is by dividing the disease into subgroups. Toward this effort, recent advances in high-throughput sequencing technology have revealed four molecular subtypes of gastric cancer, which are classified as Epstein-Barr virus-positive, microsatellite instability, genomically stable, and chromosomal instability subtypes. We anticipate that this molecular subtyping will help to extend our knowledge for basic research purposes and will be valuable for clinical use. Here, we review the genomic and epigenomic heterogeneity of the four molecular subtypes of gastric cancer. We also describe a mutational meta-analysis and a reanalysis of DNA methylation that were performed using previously reported gastric cancer datasets.

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Jun 18, 2016·Molecular Carcinogenesis·Noriyuki ArakawaHiromu Suzuki
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Nov 5, 2020·Journal of Oncology·Catalin Bogdan SatalaSimona Gurzu

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