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Review: Gastric malignancies: Basic aspects.

M Constanza Camargo1, Ceu Figueiredo2,3,4, Jose C Machado2,3,4

  • 1Division of Cancer Epidemiology and Genetics, National Cancer Institute, Rockville, MD, USA.

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Summary
This summary is machine-generated.

Gastric cancer, a leading cause of death, involves complex interactions between microbes and host factors. Understanding microbial roles and molecular subtypes is crucial for developing new therapies and diagnostic strategies.

Keywords:
Epstein-Barr virusHelicobacter pylorigastric cancermicrobiomemolecular characterization

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Area of Science:

  • Oncology
  • Microbiology
  • Genomics

Background:

  • Gastric cancer is a major global health concern, with increasing incidence linked to aging populations and high-risk groups.
  • The disease arises from intricate interactions between microbial agents, environmental factors, and host genetics, disrupting critical cellular pathways.
  • Current therapeutic options for gastric cancer remain limited despite advances in understanding carcinogenesis.

Purpose of the Study:

  • To review recent findings on the interplay between microbial agents and gastric cancer development.
  • To highlight advances in the molecular characterization of gastric tumors and their subtypes.
  • To explore the potential of microbial agents and molecular signatures for novel therapeutic targets and diagnostic strategies.

Main Methods:

  • Review of current scientific literature focusing on microbial agents (Helicobacter pylori, non-H. pylori microbiome, Epstein-Barr virus) and gastric cancer.
  • Analysis of recent genomic studies characterizing the molecular heterogeneity of gastric tumors.
  • Synthesis of information on molecular subtypes with potential clinical utility.

Main Results:

  • Helicobacter pylori, the non-H. pylori microbiome, and Epstein-Barr virus are significantly associated with gastric cancer.
  • Gastric tumors exhibit considerable molecular heterogeneity, with distinct subtypes identified.
  • Emerging molecular signatures show promise for predicting patient outcomes and guiding treatment decisions.

Conclusions:

  • Microbial agents play a critical role in gastric carcinogenesis, offering potential targets for intervention.
  • Understanding gastric cancer's molecular subtypes is essential for personalized medicine, including targeted therapies and early diagnosis.
  • Continued research into the microbiome-gastric cancer axis and tumor molecular profiling is vital for improving patient outcomes.