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Published in: Breast Cancer Research and Treatment 2/2020

01-06-2020 | Bisphosphonate | Review

Bone modifying agents for bone loss in patients with aromatase inhibitor as adjuvant treatment for breast cancer; insights from a network meta-analysis

Authors: Hirotaka Miyashita, Sera Satoi, Toshiki Kuno, Christina Cruz, Stephen Malamud, Se-Min Kim

Published in: Breast Cancer Research and Treatment | Issue 2/2020

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Abstract

Purpose

The data of head-to-head comparisons of the anti-fracture efficacy of bone modifying agents (BMAs) in patients with hormone receptor-positive breast cancer receiving aromatase inhibitor (AI) are not available. Therefore, we conducted a network meta-analysis to compare the efficacy of different BMAs in patients with breast cancer receiving adjuvant AI.

Methods

We performed a network meta-analysis to compare the change of bone mineral densities (BMDs) and the risk of fracture in the selected studies using a random effect model. The primary outcomes are the change of BMD of lumbar spine (LS) and total hip (TH) from the baseline (ΔBMD, %) at 1 and 2 years and the risk of fracture.

Results

We identified and included a total of 16 randomized controlled trials for this analysis. All BMAs included (risedronate, zoledronate, and denosumab) were associated with a significant increase in BMD of LS and TH at 1 and 2 years compared with no upfront treatment group. Among BMAs, zoledronate and denosumab use resulted in significantly higher BMD of LS and TH at 1 and 2 years compared with risedronate. The risk of fracture was significantly lower in the patients who received denosumab or risedronate compared with the patients without upfront treatment (Relative risk (RR) [95% CI] 0.51 [0.38–0.67] and 0.54 [0.35–0.83], respectively).

Conclusion

Among the bisphosphonates, zoledronate increased BMD the most, but risedronate, not zoledronate, use was associated with lower risk of fracture. Denosumab increased BMD not only of LS but also of the cortical-bone-rich hip, and showed a significant reduction of fracture risk.
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Metadata
Title
Bone modifying agents for bone loss in patients with aromatase inhibitor as adjuvant treatment for breast cancer; insights from a network meta-analysis
Authors
Hirotaka Miyashita
Sera Satoi
Toshiki Kuno
Christina Cruz
Stephen Malamud
Se-Min Kim
Publication date
01-06-2020
Publisher
Springer US
Published in
Breast Cancer Research and Treatment / Issue 2/2020
Print ISSN: 0167-6806
Electronic ISSN: 1573-7217
DOI
https://doi.org/10.1007/s10549-020-05640-3

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