• Fujiao Duan, Hongle Li, Weigang Liu, Juanjuan Zhao, Zhongyu Yang, and Jianying Zhang.
• Department of Molecular Pathology and Medical Research Office, Affiliated Cancer Hospital of Zhengzhou University, Zhengzhou, Henan, China. Electronic address: fjduan@126.com.
• Am. J. Med. Sci. 2021 Aug 1; 362 (2): 173-181.

BackgroundThe aim of this study is to summarize the current findings concerning the FOXD2-AS1 expression and cancer prognosis.MethodsThe correlation intensity between FOXD2-AS1 expression and cancer prognosis was estimated using pooled hazard ratio (HRs) with 95% confidence intervals (CIs). GEPIA was used to assess disease-free survival (DFS), progression-free survival (PFS) and overall survival (OS) of cancer patients and differential FOXD2-AS1 expression in cancer and adjacent tissues.ResultsA total of 11 studies including 2,177 patients with OS and 477 patients with DFS/PFS data were analyzed in evidence synthesis. Overall, the pooled analysis indicated that FOXD2-AS1 expression was significantly associated with OS (HR=1.51, 95%Cl: 1.26-1.81, P<0.001) and DFS (HR=1.66, 95%CI: 1.34-2.04, P<0.001). Subgroup analysis showed that high expression of FOXD2-AS1 was significant correlated with poor OS in the median (HR=1.51, 95%CI: 1.30-1.75, P<0.001) and normal group (HR=1.50, 95%CI: 1.09-2.05, 0.01) based on cut-off value, and high FOXD2-AS1 expression was significant linked with poor DFS in patients with digestive tract cancer (DTC) (HR=1.66, 95%CI: 1.34-2.04, P<0.001). Similarly, a significant correlation between increased FOXD2-AS1 expression and poor PFS with other cancers (HR=3.84, 95%CI 1.26-11.70, P=0.02) was found. In database testing, a highly significant correlation was observed between high expression of FOXD2-AS1 and poor OS (HR=1.9, P<0.001), but not DFS (HR=1.0, P=0.900).ConclusionsOur findings indicated that FOXD2-AS1 may serve as a potential independent prognostic factor in cancer, especially in the Chinese population.Copyright © 2021. Published by Elsevier Inc.

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