The level of Kruppel-like factor 8 expression predicts prognosis and metastasis in various carcinomas

Background and objective: Kruppel-like factor 8 (KLF8), a transcription factor, belongs to the KLF8 family. Currently, studies have shown that KLF8 is highly expressed in some tumors. However, the prognostic value and metastasis of KLF8 in cancers remain unclear. For the first time, we conducted meta-analysis to explore the relationship between KLF8 expression with prognosis and metastasis in various carcinomas patients. Methods: Web of Science, PubMed, Embase, and Cochrane Library were systematically searched for eligible articles. Pooled hazard ratios (HRs) and their 95% confidence intervals (95% CIs) were calculated to evaluate the prognostic value and metastasis of KLF8 expression in human cancer patients. Results: The result revealed that highly expression level of KLF8 was significantly associated with poor overall survival (OS) (HR=1.56, 95% CI: 1.26-1.87). Meanwhile, this significant correlation was also observed in subgroup analysis stratified by cancer types, source of HR, sample size, follow-up (months). In addition, highly expression of KLF8 was also closely associated with metastasis (HR=1.37, 95% CI: 0.57-2.17) and tumor node metastasis stage (HR=1.58, 95% CI: 0.90-2.25) in carcinomas. Conclusion: In summary, our meta-analysis indicates that overexpression of KLF8 may be associated with poor prognosis and higher incidence of metastasis in various carcinomas, and KLF8 may be used as a prognostic and metastatic indicator in human cancers.