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27-04-2024 | Tamoxifen | Original Article

Adverse effects of tamoxifen treatment on bone mineral density in premenopausal patients with breast cancer: a systematic review and meta-analysis

Authors: Soo Jin Lee, Chihwan David Cha, Hanpyo Hong, Yun Young Choi, Min Sung Chung

Published in: Breast Cancer

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Abstract

Background

It is well known that adjuvant tamoxifen treatment for breast cancer in postmenopausal women decreased bone loss. However, the effects of adjuvant tamoxifen therapy on bone mineral density (BMD) in premenopausal patients with breast cancer remains uncertain. Tamoxifen would have a potential impact of premenopausal BMD on health. The aim of this meta-analysis was to assess this in premenopausal women with primary breast cancer.

Methods

Through April 2020, studies reporting BMD changes of lumbar spine or hip in premenopausal women with primary breast cancer treated with adjuvant tamoxifen and tamoxifen plus chemotherapy or ovarian function suppression (OFS) were collected from EMBASE and PubMed. The meta-analysis was performed using random effects model of the standardized mean difference (SMD) of BMD in patients.

Results

A total of 1432 premenopausal patients were enrolled in eight studies, involving 198 patients treated with tamoxifen alone in three studies. After a 3-year median follow-up, adjuvant tamoxifen decreased the lumbar spinal and hip BMD by as much as an SMD of −1.17 [95% confidence interval (CI); −1.58 to −0.76)] and −0.66 (95% CI, −1.55 to 0.23), respectively. In subgroup analysis in patients treated adjuvant tamoxifen and tamoxifen plus chemotherapy or OFS according to follow-up duration, the bone change of < 3 years follow-up group was −0.03 SMD (95% CI, −0.47 to 0.41) and that of ≥ 3 years follow-up group was −1.06 SMD (95% CI, −1.48 to −0.64). Compared with patients who received tamoxifen alone, patients who received combination therapy with chemotherapy or OFS showed lesser bone loss at the lumbar spine.

Conclusions

Our meta-analysis demonstrated that adjuvant tamoxifen therapy in premenopausal patients caused bone loss after 3 years of follow-up, especially at the lumbar spines. For a definite evaluation of the adverse effects of tamoxifen on bone, it is necessary to accumulate more relevant studies.
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Metadata
Title
Adverse effects of tamoxifen treatment on bone mineral density in premenopausal patients with breast cancer: a systematic review and meta-analysis
Authors
Soo Jin Lee
Chihwan David Cha
Hanpyo Hong
Yun Young Choi
Min Sung Chung
Publication date
27-04-2024
Publisher
Springer Nature Singapore
Published in
Breast Cancer
Print ISSN: 1340-6868
Electronic ISSN: 1880-4233
DOI
https://doi.org/10.1007/s12282-024-01586-2
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