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Review
. 2019 Dec;12(6):275-282.
doi: 10.14740/gr1187. Epub 2019 Nov 21.

Molecular Classification of Gastric Adenocarcinoma

Qianqian Wang  1   2 , Ganglei Liu  3 , Chunhong Hu  1
Affiliations
Review

Molecular Classification of Gastric Adenocarcinoma

Qianqian Wang et al. Gastroenterology Res. 2019 Dec.

Abstract

As one of the leading causes of cancer-related deaths, gastric cancer (GC) has gained more and more attention. Although most GCs are adenocarcinomas, they have considerable heterogeneity among patients. Thus, appropriate classification and individualized treatment of GCs is essential. The traditional morphology-based classification systems including the World Health Organization (WHO) classification and the Lauren's classification have a limited utility in guiding clinical treatment due to the molecular heterogeneity of GC. Classifications based on molecular features become important. Recent years, molecular methods such as next-generation sequencing (NGS) including deoxyribonucleic acid (DNA) sequencing, ribonucleic acid (RNA) sequencing, whole-exome sequencing, copy number variation analysis and DNA methylation arrays have been used to classify the GC into molecular subtypes which can convey more detailed information of tumor than histopathological characteristics. In this review, we described the current molecular classifications of GC including the intrinsic subtypes, Lei subtypes, The Cancer Genome Atlas (TCGA) subtypes, Asian Cancer Research Group (ACRG) subtypes, and some other additional classifications.

Keywords: Gastric cancer; Molecular classification; Prognosis.

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Conflict of interest statement

None to declare.

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