Chromogranin A is a predictor of prognosis in patients with prostate cancer: a systematic review and meta-analysis
Authors Guo Z, Wang Y, Xiang S, Wang S, Chan FL
Received 12 October 2018
Accepted for publication 15 February 2019
Published 5 April 2019 Volume 2019:11 Pages 2747—2758
Checked for plagiarism Yes
Review by Single-blind
Peer reviewers approved by Dr Andrew Yee
Peer reviewer comments 2
Editor who approved publication: Dr Ahmet Emre Eskazan
Zhenlang Guo,1 Yuliang Wang,2 Songtao Xiang,3 Shusheng Wang,3 Franky Leung Chan2
1The Second Clinical College, Guangzhou University of Chinese Medicine, Guangzhou, People’s Republic of China; 2School of Biomedical Sciences, The Chinese University of Hong Kong, Shatin, Hong Kong, People’s Republic of China; 3Department of Urology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, People’s Republic of China
Background: The prognostic value of chromogranin-A (CHGA) as a biomarker of prostate cancer (PCa) has been evaluated extensively. However, to date the results still remain controversial. This study aims to perform a meta-analysis on previous studies in order to determine whether CHGA would be a biomarker for survival in PCa patients.
Methods: MEDLINE, Embase, Web of Science, and Cochrane Library databases were searched to identify eligible studies published before September 2018, regarding the association of CHGA gene expression with survival outcomes in patients with PCa. Multivariate adjusted HRs and associated 95% CIs were calculated using random effects models.
Results: Ten cohort studies involving 3,172 patients were finally included. According to the included studies, circulating CHGA levels were tested in serum, plasma, and tissues. The results showed an association between high CHGA expression and worse overall survival (OS) (HR=1.24, 95% CI: 1.07–1.44; P=0.004; I2,=77.6%) in PCa patients. However, no significant association was observed between increasing CHGA expression and shorter progression-free survival (HR=1.73, 95% CI: 0.92–3.28; P=0.090; I2,=73.9%). The results of sensitivity analysis validated the rationality and reliability of our analysis.
Conclusion: Current evidence indicates that high CHGA expression is a potential marker for poor OS in PCa. Future studies are needed to explore tailored treatments that directly target CHGA for the improvement of survival in men with PCa.
Keywords: prostate cancer, chromogranin-A, prognosis, survival, meta-analysis
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