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Ma Y.,Zhejiang University | Liu L.,Zhejiang University | Jin J.,Zhejiang University | Jin J.,Key Laboratory of Hematopoietic Malignancies Zhejiang Province | And 2 more authors.
PLoS ONE | Year: 2016

Background Recently, the all-trans retinoic acid (ATRA) plus arsenic trioxide (ATO) protocol has become a promising first-line therapeutic approach in patients with newly diagnosed acute promyelocytic leukemia (APL), but its benefits compared with standard ATRA plus chemotherapy regimen needs to be proven. Herein, we conducted a meta-analysis comparing the efficacy of ATRA plus ATO with ATRA plus chemotherapy for adult patients with newly diagnosed APL. Methods We systematically searched biomedical electronic databases and conference proceedings through February 2016. Two reviewers independently assessed all studies for relevance and validity. Results Overall, three studies were eligible for inclusion in this meta-analysis, which included a total of 585 patients, with 317 in ATRA plus ATO group and 268 in ATRA plus chemotherapy group. Compared with patients who received ATRA and chemotherapy, patients who received ATRA plus ATO had a significantly better event-free survival (hazard ratio [HR] = 0.38, 95% confidence interval [CI]: 0.22-0.67, p = 0.009), overall survival (HR = 0.44, 95% CI: 0.24-0.82, p = 0.009), complete remission rate (relative risk [RR] = 1.05; 95% CI: 1.01-1.10; p = 0.03). There were no significant differences in early mortality (RR = 0.48; 95% CI: 0.22-1.05; p = 0.07). Conclusion Thus, this analysis indicated that ATRA plus ATO protocol may be preferred to standard ATRA plus chemotherapy protocol, particularly in low-to-intermediate risk APL patients. Further larger trials were needed to provide more evidence in high-risk APL patients. © 2016 Ma et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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