Effect of radiotherapy after breast-conserving surgery on 10-year recurrence and 15-year breast cancer death: Meta-analysis of individual patient data for 10 801 women in 17 randomised trials

Nigel Bundred, K. Albain, S. Anderson, R. Arriagada, W. Barlow, J. Bergh, J. Bliss, M. Buyse, D. Cameron, E. Carrasco, M. Clarke, C. Correa, A. Coates, R. Collins, J. Costantino, D. Cutter, J. Cuzick, S. Darby, N. Davidson, C. DaviesK. Davies, A. Delmestri, A. Di Leo, M. Dowsett, P. Elphinstone, V. Evans, M. Ewertz, R. Gelber, L. Gettins, C. Geyer, A. Goldhirsch, J. Godwin, R. Gray, C. Gregory, D. Hayes, C. Hill, J. Ingle, R. Jakesz, S. James, M. Kaufmann, A. Kerr, E. MacKinnon, P. McGale, T. McHugh, L. Norton, Y. Ohashi, S. Paik, H. C. Pan, E. Perez, R. Peto, M. Piccart, L. Pierce, K. Pritchard, G. Pruneri, V. Raina, P. Ravdin, J. Robertson, E. Rutgers, Y. F Shao, S. Swain, C. Taylor, P. Valagussa, G. Viale, T. Whelan, E. Winer, Y. Wang, W. Wood

    Research output: Contribution to journalArticlepeer-review

    Abstract

    After breast-conserving surgery, radiotherapy reduces recurrence and breast cancer death, but it may do so more for some groups of women than for others. We describe the absolute magnitude of these reductions according to various prognostic and other patient characteristics, and relate the absolute reduction in 15-year risk of breast cancer death to the absolute reduction in 10-year recurrence risk. We undertook a meta-analysis of individual patient data for 10 801 women in 17 randomised trials of radiotherapy versus no radiotherapy after breast-conserving surgery, 8337 of whom had pathologically confirmed node-negative (pN0) or node-positive (pN+) disease. Overall, radiotherapy reduced the 10-year risk of any (ie, locoregional or distant) first recurrence from 35·0 to 19·3 (absolute reduction 15·7, 95 CI 13·7-17·7, 2p
    Original languageEnglish
    Pages (from-to)1707-1716
    Number of pages9
    JournalThe Lancet
    Volume378
    Issue number9804
    DOIs
    Publication statusPublished - 12 Nov 2011

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