Laboratory Medicine ›› 2022, Vol. 37 ›› Issue (9): 877-881.DOI: 10.3969/j.issn.1673-8640.2022.09.017

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Application of circulating tumor DNA detection in the diagnosis and treatment of gastric cancer

WANG Rui, LI Zhaoyan, ZHAO Aiguang()   

  1. Longhua Hospital,Shanghai University of Traditional Chinese Medicine,Shanghai 200032,China
  • Received:2021-03-15 Revised:2021-11-22 Online:2022-09-30 Published:2022-10-25
  • Contact: ZHAO Aiguang

Abstract:

Gastric cancer is one of the most common malignant tumors in the world. Due to its high heterogeneity,the 5-year survival rate is <30%. In the future,it is needed to find new and reliable biological indicators to improve the early diagnosis rate and the prediction accuracy of recurrence and metastasis of gastric cancer,so as to guide the treatment and improve the prognosis. Circulating tumor DNA(ctDNA) is a kind of free DNA released from apoptotic and necrotic tumor cells,which carries the mutation information related to tumor. The ctDNA was usually determined by liquid biopsies. It can be used as a biomarker for the dynamic monitoring of gastric cancer. It is safe,minimally invasive,convenient and repeatable. It has clinical significance in early diagnosis,disease monitoring and individualized treatment. This review expounds the biological characteristics,detection methods and the role of ctDNA in the diagnosis,treatment and prognosis evaluation of gastric cancer,and it discusses the clinical application value of ctDNA in gastric cancer.

Key words: Circulating tumor DNA, Gastric cancer, Biomarker, Liquid biopsy

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