Prognostic value and clinical significance of long noncoding RNA CASC2 in human malignancies: a meta-analysis
Juan Cai1, Xueliang Zuo2, Zhiqiang Chen3,4
1Department of Oncology, The First Affiliated Hospital, Yijishan Hospital of Wannan Medical College, Wuhu, Anhui, China.
Purpose:
This meta-analysis aimed to assess the prognostic value of long noncoding RNA cancer susceptibility candidate 2 (CASC2) in human tumors.
Materials And Methods:
We searched the available databases up to December 2017. Pooled hazard ratios (HRs) and the corresponding 95% confidence intervals (CIs) were used to examine the prognostic impact of CASC2 on overall survival (OS) in patients diagnosed with malignancies.
Results:
A total of eight studies with 663 cancer patients were enrolled. Our results showed that high CASC2 expression level was associated with a favorable OS (HR=0.437, 95% CI: 0.345-0.554). The significant results were not altered by stratified analysis according to cancer type, sample size, follow-up months, and HR estimation method. A significant association of glioma tumor stage with CASC2 expression was detected (III-IV vs I-II: odds ratio=2.126, 95% CI: 1.032-4.378). CASC2 could be used as an independent prognostic factor for OS (HR=0.450, 95% CI: 0.336-0.602). Sensitivity analysis showed that no single study changed the pooled results significantly. Begg's funnel plot and Egger's test showed that no publication bias was detected.
Conclusion:
High expression level of CASC2 is associated with favorable survival outcome for cancer patients, and CASC2 could be used as a prognostic predictor for cancers.
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