CApecitabine plus Radium-223 (Xofigo) in breast cancer patients with BONe metastases (CARBON): study protocol for a phase IB/IIA randomised controlled trial
Howell, Sacha J
AffiliationThe University of Sheffield, Sheffield, UK
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AbstractBACKGROUND: A substantial proportion of breast cancer patients develop metastatic disease, with over 450,000 deaths globally per year. Bone is the most common first site of metastatic disease accounting for 40% of all first recurrence and 70% of patients with advanced disease develop skeletal involvement. Treatment of bone metastases currently focusses on symptom relief and prevention and treatment of skeletal complications. However, there remains a need for further treatment options for patients with bone metastases. Combining systemic therapy with a bone-targeted agent, such as radium-223, may provide an effective treatment with minimal additional side effects. METHODS/DESIGN: CARBON is a UK-based, open-label, multi-centre study which comprises an initial safety phase to establish the feasibility and safety of combining radium-223 given on a 6-weekly schedule in combination with orally administered capecitabine followed by a randomised extension phase to further characterise the safety profile and provide preliminary estimation of efficacy. DISCUSSION: The CARBON study is important as the results will be the first to assess radium-223 with chemotherapy in advanced breast cancer. If the results find acceptable rates of toxicity with a decrease in bone turnover markers, further work will be necessary in a phase II/III setting to assess the efficacy and clinical benefit. TRIAL REGISTRATION: ISRCTN, ISRCTN92755158, Registered on 17 February 2016.
CitationColeman R, Brown J, Rathbone E, Flanagan L, Reid A, Kendall J, et al. CApecitabine plus Radium-223 (Xofigo) in breast cancer patients with BONe metastases (CARBON): study protocol for a phase IB/IIA randomised controlled trial. Trials. 2020;21(1):89.
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