Clinical Significance of Chemokine Receptor CXCR4 and CCR7 mRNA Expression in Patients With Colorectal Cancer

Background/Aim: The chemokine receptors C -XC chemokine receptor type 4 (CXCR4) and C-C chemokine receptor type 7 (CCR7) play an important role in the invasion and metastasis of cancer. This study investigated the relationship between relative expression of CXCR4 and CCR7 mRNA, clinicopathological factors, and outcomes in patients with colorectal cancer (CRC). Patients and Methods: We studied 202 patients who underwent surgery for CRC. The expression levels of CXCR4 and CCR7 mRNA in cancerous tissue were measured using quantitative real-time reversetranscriptase polymerase chain reaction. Results: High CCR7 mRNA expression levels in CRC tissues were positively associated with tumour size and were more frequently associated with cancer of the rectum than of the colon. Moreover, outcomes were significantly poorer in patients with high CCR7 mRNA expression than in those with low expression. On multivariate Cox regression analysis, a higher CCR7 mRNA expression level was a significant independent predictor of poorer overall survival in patients with CRC. Conclusion: Overexpression of CCR7 mRNA may be a useful independent prognostic factor in patients with CRC.

Automated summary

In patients with colorectal cancer, high expression of CCR7 mRNA is associated with larger tumor size and poorer outcomes. Overexpression of CCR7 mRNA may serve as an independent prognostic factor in patients with colorectal cancer.