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Updated: Jun 26, 2025

Genome-Wide Analysis of DNA Methylation in Gastrointestinal Cancer
Published on: September 18, 2020
Research advances in the molecular classification of gastric cancer
Dike Shi1, Zihan Yang2, Yanna Cai2
1Department of Gastrointestinal Surgery, The Second Affiliated Hospital of Zhejiang University School of Medicine, Jiefang Road, Hangzhou, 310009, China.
Abstract:
Gastric cancer (GC) is a malignant tumor with one of the lowest five-year survival rates. Traditional first-line treatment regimens, such as platinum drugs, have limited therapeutic efficacy in treating advanced GC and significant side effects, greatly reducing patient quality of life. In contrast, trastuzumab and other immune checkpoint inhibitors, such as nivolumab and pembrolizumab, have demonstrated consistent and reliable efficacy in treating GC. Here, we discuss the intrinsic characteristics of GC from a molecular perspective and provide a comprehensive review of classification and treatment advances in the disease. Finally, we suggest several strategies based on the intrinsic molecular characteristics of GC to aid in overcoming clinical challenges in the development of precision medicine and improve patient prognosis.
Insights
Gastric cancer (GC) treatment is improving with targeted therapies like trastuzumab and immune checkpoint inhibitors. Understanding GC
Area of Science:
- Oncology
- Molecular Biology
- Genetics
Background:
- Gastric cancer (GC) has a low five-year survival rate.
- Traditional treatments like platinum drugs show limited efficacy and severe side effects for advanced GC.
- Emerging therapies, including trastuzumab and immune checkpoint inhibitors (nivolumab, pembrolizumab), offer improved outcomes.
Purpose of the Study:
- To review the molecular characteristics of gastric cancer.
- To provide a comprehensive overview of GC classification and treatment advancements.
- To propose strategies for precision medicine in GC based on molecular insights.
Main Methods:
- Literature review of molecular characteristics of gastric cancer.
- Analysis of current GC classification systems.
- Evaluation of treatment advances, including targeted therapies and immunotherapies.
- Discussion of challenges and future directions in GC precision medicine.
Main Results:
- GC exhibits diverse molecular features influencing its behavior and treatment response.
- Trastuzumab and immune checkpoint inhibitors demonstrate significant efficacy in specific GC subtypes.
- Advances in molecular classification are crucial for personalized treatment selection.
- Precision medicine strategies hold promise for improving GC patient prognosis.
Conclusions:
- Molecular understanding is key to advancing gastric cancer treatment.
- Targeted therapies and immunotherapies represent a paradigm shift in GC management.
- Personalized treatment approaches based on molecular profiling are essential for improving survival rates and quality of life in gastric cancer patients.
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