Monitoring gastric cancer progression with circulating tumour DNA.

Abstract

BACKGROUND:

Circulating tumour DNA (ctDNA) is an emerging candidate biomarker for malignancies and may be useful for monitoring the disease status of gastric cancer.

METHODS:

We performed targeted deep sequencing of plasma cell-free DNA (cfDNA) by massively parallel sequencing in patients with tumours harbouring TP53 mutations. The quantitative values of TP53-ctDNA during the clinical course were compared with the tumour status.

RESULTS:

Three out of ten patients with TP53 mutations in primary tumours showed detectable TP53 mutation levels in preoperative cfDNA. Although the cfDNA concentrations were not always reflective of the disease course, the ctDNA fraction correlated with the disease status.

CONCLUSIONS:

ctDNA may serve as a useful biomarker to monitor gastric cancer progression and residual disease.

• Authors: T Hamakawa, Y Kukita, Y Kurokawa, Y Miyazaki, T Takahashi, M Yamasaki, H Miyata, K Nakajima, K Taniguchi, S Takiguchi, M Mori, Y Doki, K Kato
• Journal: British journal of cancer (Br J Cancer) Vol. 112 Issue 2 Pg. 352-6 (Jan 20 2015) ISSN: 1532-1827 [Electronic] England
• PMID: 25490524 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)

Chemical References

• Biomarkers, Tumor
• DNA, Neoplasm
• TP53 protein, human
• Tumor Suppressor Protein p53

Topics

• Aged
• Aged, 80 and over
• Biomarkers, Tumor (blood)
• DNA Mutational Analysis
• DNA, Neoplasm (blood)
• Disease Progression
• High-Throughput Nucleotide Sequencing
• Humans
• Lymphatic Metastasis
• Male
• Neoplasm, Residual
• Prospective Studies
• Stomach Neoplasms (blood, pathology, surgery)
• Tumor Suppressor Protein p53 (genetics)