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  • Title: Comparison of patient-reported breast, arm, and shoulder symptoms and body image after radiotherapy for early breast cancer: 5-year follow-up in the randomised Standardisation of Breast Radiotherapy (START) trials.
    Author: Hopwood P, Haviland JS, Sumo G, Mills J, Bliss JM, Yarnold JR, START Trial Management Group.
    Journal: Lancet Oncol; 2010 Mar; 11(3):231-40. PubMed ID: 20138809.
    Abstract:
    BACKGROUND: Few trials of adjuvant breast radiotherapy have incorporated patient-reported breast symptoms and related areas of quality of life. We assessed these measures in a quality-of-life study that was part of the randomised START (Standardisation of Breast Radiotherapy) trials. METHODS: In START trial A, 2236 patients were randomly assigned to receive either 39 Gy or 41.6 Gy delivered in 13 fractions over 5 weeks or a global standard of 50 Gy in 25 fractions. In START trial B, 2215 women were randomly assigned to receive either 40 Gy in 15 fractions over 3 weeks or the same control regimen (50 Gy in 25 fractions) as in trial A. 2739 patients were eligible for the quality-of-life study of whom 2208 (81%) were accrued (1129 patients from trial A and 1079 from trial B). Participants completed the EORTC QLQ-C30 and BR23 questionnaires and protocol-specific radiotherapy items up to 5 years after radiotherapy. We compared results across regimens with generalised estimating equations and survival analyses. The START trials are registered, ISRCTN59368779. FINDINGS: At 5 years, up to 40% women reported moderate or marked changes to the breast after radiotherapy, and arm and shoulder pain affected up to a third of patients. Breast symptoms and body image concerns reduced over time. Rates of radiotherapy adverse effects were lower for the 39 Gy regimen in trial A and the 40 Gy regimen in trial B, compared with the 50 Gy control regimen; rates of radiotherapy adverse effects were similar between the 41.6 Gy and 50 Gy regimens in trial A. Adverse change in skin appearance was significantly lower for patients who received 39 Gy compared with those who received 50 Gy (HR 0.63, 95% CI 0.47-0.84) and for those who received 40 Gy compared with those who received 50 Gy (0.76, 0.60-0.97); no significant difference was observed between patients who received 41.6 Gy and those who received 50 Gy in trial A (0.83, 0.63-1.08). Patient self-ratings of breast symptoms discriminated a 10% difference in randomised dose intensity. Up to a third of women reported moderate or marked pain in the arm and shoulder over 5 years whilst more than 10% experienced moderate or marked arm and hand swelling, with no significant difference in arm/shoulder subscale scores between the regimens in trial A or trial B; many baseline arm and shoulder symptoms were associated with prior surgery. INTERPRETATION: A substantial proportion of women report moderate or marked breast, arm, and shoulder symptoms over 5 years of follow-up after radiotherapy, but with no detriment to body image. Nonetheless, most patients stand to gain from hypofractionated radiotherapy regimens with a potential for fewer adverse effects; this strengthens the evidence from the START trials for hypofractionated regimens for women requiring radiotherapy for early breast cancer. FUNDING: Cancer Research UK, UK Medical Research Council, UK Department of Health.
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