Ki67 is an independent predictor of recurrence in the largest randomised trial of 3 radiation fractionation schedules in localised prostate cancer

External beam radiotherapy is delivered using a uniform fractionation schedule for localised prostate tumours, individualising fractionation according to tumour biology could improve outcomes. Additionally recurrence rates following radiotherapy vary considerably, better prognostic markers could improve treatment stratification. This study assessed if the cellular proliferation marker Ki67 provides prognostic information and predicts response to radiotherapy fractionation in patients participating in ", a randomised trial of three radiotherapy fractionation schedules (74Gy/37f vs 60Gy/20f vs 57Gy/19f).

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