High-dose cytarabine in acute myeloid leukemia treatment: a systematic review and meta-analysis

Wei Li, Xiaoyuan Gong, Mingyuan Sun, Xingli Zhao, Benfa Gong, Hui Wei, Yingchang Mi, Jianxiang Wang, Wei Li, Xiaoyuan Gong, Mingyuan Sun, Xingli Zhao, Benfa Gong, Hui Wei, Yingchang Mi, Jianxiang Wang

Abstract

The optimal dose, scheme, and clinical setting for Ara-C in acute myeloid leukemia (AML) treatment remain uncertain. In this study, we performed a meta-analysis to systematically assess the impact of high-dose cytarabine (HDAC) on AML therapy during the induction and consolidation stages. Twenty-two trials with a total of 5,945 de novo AML patients were included in the meta-analysis. Only patients less than 60 year-old were included in the study. Using HDAC in induction therapy was beneficial for RFS (HR = 0.57; 95% CI, 0.35-0.93; P = 0.02) but not so for CR rate (HR = 1.01; 95% CI, 0.93-1.09; P = 0.88) and OS (HR = 0.83; 95% CI, 0.66-1.03; P = 0.1). In consolidation therapy, HDAC showed significant RFS benefits (HR = 0.67; 95% CI, 0.49-0.9; P = 0.008) especially for the favorable-risk group (HR = 0.38; 95% CI, 0.21-0.69; P = 0.001) compared with SDAC (standard dose cytarabine), although no OS advantage was observed (HR = 0.84; 95% CI, 0.55-1.27; P = 0.41). HDAC treatment seemed less effective than auto-BMT/allo-BMT treatment (HR = 1.66, 95% CI, 1.3-2.14; P<0.0001) with similar OS. HDAC treatment led to lower relapse rate in induction and consolidation therapy than SDAC treatment, especially for the favorable-risk group. Auto-BMT/allo-BMT was more beneficial in prolonging RFS than HDAC.

Conflict of interest statement

Competing Interests: In this article we declared that Jianxiang Wang acts as consultant of Novartis and Bristol Myers Squibb. This does not alter the authors’ adherence to PLOS ONE policies on sharing data and materials. ALL authors have no conflict of interest to declare.

Figures

Figure 1. Flow chart explaining the selection…
Figure 1. Flow chart explaining the selection of eligible studies included in the meta-analysis.
Figure 2. Effect of HDAC versus SDAC…
Figure 2. Effect of HDAC versus SDAC in induction therapy.
A: Effect of HDAC versus SDAC in induction therapy on CR rate. B: Overall survival benefit of HDAC in induction therapy. C: Relapse free survival benefit of HDAC in induction therapy.
Figure 3. Overall survival benefit of HDAC…
Figure 3. Overall survival benefit of HDAC in consolidation therapy.
A: Total overall survival benefit of HDAC in consolidation therapy. B: Overall survival benefit of different subgroups of HDAC in consolidation therapy.
Figure 4. Relapse free survival benefit of…
Figure 4. Relapse free survival benefit of HDAC in consolidation therapy.
A: Total relapse free survival benefit of HDAC in consolidation therapy. B: Relapse free survival benefit of different subgroups of HDAC in consolidation therapy.
Figure 5. Effect of HDAC versus BMT…
Figure 5. Effect of HDAC versus BMT on overall survival.
Figure 6. Effect of HDAC versus BMT…
Figure 6. Effect of HDAC versus BMT on relapse free survival.

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Source: PubMed

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