The lancet oncology
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The lancet oncology · Sep 2008
Randomized Controlled Trial Multicenter StudyAdjuvant endocrine therapy plus zoledronic acid in premenopausal women with early-stage breast cancer: 5-year follow-up of the ABCSG-12 bone-mineral density substudy.
The Austrian Breast and Colorectal Cancer Study Group trial-12 (ABCSG-12) bone substudy assesses zoledronic acid for preventing bone loss associated with adjuvant endocrine therapy and reports on long-term findings of bone-mineral density (BMD) during 3 years of treatment and 2 years after completing adjuvant treatment with or without zoledronic acid. The aim of this substudy is to gain insight into bone health in this setting. ⋯ Goserelin plus tamoxifen or anastrozole for 3 years without concomitant zoledronic acid caused significant bone loss. Although there was partial recovery 2 years after completing treatment, patients receiving endocrine therapy alone did not recover their baseline BMD levels. Concomitant zoledronic acid prevented bone loss during therapy and improved BMD at 5 years.
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The lancet oncology · Sep 2008
Multicenter Study Comparative StudyRisk factors for joint symptoms in patients enrolled in the ATAC trial: a retrospective, exploratory analysis.
Joint symptoms (eg, arthralgia and arthritis) are a well-known side-effect of aromatase inhibitors. Low oestrogen concentrations and postmenopausal status are associated with the development of these symptoms. Chemotherapy can also induce joint symptoms, but tamoxifen seems to have little effect on their incidence. The aim of this study was to assess the relative importance of different risk factors for treatment-emergent joint symptoms in patients assigned to anastrozole or tamoxifen as adjuvant treatment for postmenopausal breast cancer. ⋯ In this trial, the major risk factors for developing joint symptoms were previous HRT, hormone-receptor positivity, previous chemotherapy, obesity, and treatment with anastrozole. Discussion of identified risk factors is appropriate when counselling women before initiation of adjuvant hormonal treatment.