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Change in bone mineral density during adjuvant chemotherapy for early-stage breast cancer

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  • Carina Ørts Christensen, Department of Oncology, Odense University Hospital, Sdr. Boulevard 29, DK-5000, Odense C, Denmark. Carina.Oerts.Christensen@rsyd.dk.
  • ,
  • Deirdre Cronin-Fenton
  • Trine Frøslev
  • Anne Pernille Hermann, Institute of Clinical Research, University of Southern Denmark, Winsløwparken 19, 5000, Odense C, Denmark.
  • ,
  • Marianne Ewertz, Department of Oncology, Odense University Hospital, Sdr. Boulevard 29, DK-5000, Odense C, Denmark.

PURPOSE: Adjuvant chemotherapy has been associated with loss of bone mineral density (BMD) either as a direct effect or due to glucocorticoids used as supportive care medication. A prospective cohort study was conducted to evaluate changes in BMD from baseline to right after completion of chemotherapy, i.e., 4 months.

METHODS: Dual-imaging X-ray absorptiometry (DXA) was performed at baseline and after completing anthracycline- and taxane-based chemotherapy to measure BMD in the spine, hip, and forearm in early-stage breast cancer patients. High-dose prednisolone was used at three weekly intervals to reduce nausea and vomiting. Patients were advised a daily calcium/vitamin D supplement. Linear regression was used to assess mean percentage change in BMD and 95 % confidence intervals (95 % CI) according to doses of prednisolone, menopausal status, smoking, and BMI.

RESULTS: Eight patients were excluded: seven because of initiation of bisphosphonate treatment due to osteoporosis at baseline, and one had non-interpretable DXA. The final cohort included 97 patients with a mean age of 53 years (range 34-72). Mean cumulative prednisolone dose was 1308 mg (95 % CI 1255; 1362). BMD increased 1.36 % (95 % CI 0.7; 2.0, p < 0.001) in the spine and 1.27 % (95 % CI 0.9; 1.7, p < 0.001) in the hip. Forearm BMD did not change. Postmenopausal women had increases in spine BMD of 2.35 % (95 % CI 1.1; 3.6, p < 0.001) compared to premenopausal women. The spine BMD of current smokers decreased 1.67 % (95 % CI -3.3; -0.1, p = 0.04) compared to never/former smokers.

CONCLUSIONS: Adjuvant chemotherapy supplemented with prednisolone was not associated with loss of BMD. Postmenopausal women gained bone mass, whereas current smokers lost bone mass.

Original languageEnglish
JournalSupportive care in cancer : official journal of the Multinational Association of Supportive Care in Cancer
Volume24
Issue10
Pages (from-to)4229-36
Number of pages8
ISSN0941-4355
DOIs
Publication statusPublished - Oct 2016

    Research areas

  • Journal Article

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