Prognostic value of YKL-40 in colorectal carcinoma patients:A metaanalysis

摘要

BACKGROUND In recent years,the predictive role of YKL-40 for long-term survival in colorectal cancer patients has been gradually investigated.However,whether it is a reliable and valuable prognostic indicator for patients with colorectal carcinoma has not been verified.AIM To identify the prognostic value of serum/plasma concentration of YKL-40 or expression status of YKL-40 in tumor cells in colorectal carcinoma patients.METHODS Several electronic databases including the PubMed,EMBASE,Web of Science,CNKI,VIP and WanFang were searched for relevant studies.The hazard ratios(HR)and 95%confidence intervals(CI)were combined and the primary and secondary outcomes were overall survival(OS)and progression-free survival(PFS),respectively.All statistical analysis were conducted by STATA 15.0 software.RESULTS A total of nine studies involving 2545 patients were included.The pooled results indicated that YKL-40 was significantly associated with poor OS(HR=1.80,95%CI:1.32-2.45,P<0.001)and PFS(HR=1.62,95%CI:1.22-2.16,P=0.001).Subgroup analysis stratified by the treatment,tumor type and source of YKL-40 showed similar results.CONCLUSION Elevated serum/plasma concentration of YKL-40 or positive expression in tumor cells was related with worse prognosis of colorectal carcinoma patients.YKL-40 might serve as a novel and reliable indicator for the evaluation of prognosis in colorectal cancer.