INTRODUCTION: This pooled analysis study aimed to reveal the prognostic relevance of microRNAs (miRNAs) in patients with diffuse large B-cell lymphoma (DLBCL). MATERIALS AND METHODS: We examined the impact of miRNAs on clinical outcome. Eligible studies were identified and quality assessed using multiple search strategies. Data were extracted from included studies which correlated survival with expression of miRNAs (serum or tissue). RESULTS: We pooled proper studies, and combined the hazard ratios with 95% confidence intervals to estimate strength of the correlations. There were 18 studies including 1950 patients with DLBCL eligible for pooled analysis. We found significant combined HRs for poor overall survival for high expression of miR-21 and low expression of miR-224 in tumor tissue, but for favorable relapse free survival for high expression of miR-21 in serum. Progression free survival was shortened in patients with low expression of miR-199a/b, miR-146b-5p, miR-224 and high expression of miR-222. CONCLUSION: MiRNAs may act as independent prognostic factors in patients with DLBCL, and useful in risk stratification.
INTRODUCTION: This pooled analysis study aimed to reveal the prognostic relevance of microRNAs (miRNAs) in patients with diffuse large B-cell lymphoma (DLBCL). MATERIALS AND METHODS: We examined the impact of miRNAs on clinical outcome. Eligible studies were identified and quality assessed using multiple search strategies. Data were extracted from included studies which correlated survival with expression of miRNAs (serum or tissue). RESULTS: We pooled proper studies, and combined the hazard ratios with 95% confidence intervals to estimate strength of the correlations. There were 18 studies including 1950 patients with DLBCL eligible for pooled analysis. We found significant combined HRs for poor overall survival for high expression of miR-21 and low expression of miR-224 in tumor tissue, but for favorable relapse free survival for high expression of miR-21 in serum. Progression free survival was shortened in patients with low expression of miR-199a/b, miR-146b-5p, miR-224 and high expression of miR-222. CONCLUSION: MiRNAs may act as independent prognostic factors in patients with DLBCL, and useful in risk stratification.
Authors: Cliff I Oduor; Mercedeh Movassagh; Yasin Kaymaz; Kiprotich Chelimo; Juliana Otieno; John M Ong'echa; Ann M Moormann; Jeffrey A Bailey Journal: Front Microbiol Date: 2017-03-28 Impact factor: 5.640