EORTC Boost Trial
% 10-year IBTR
as first event
Age (years)
50 Gy
50 Gy +
16 Gy
≤ 40
23.9 13.5
41-50
12.5
8.7
51-60
7.8
4.9
>60
7.3
3.8
Bartelink H et al.
J Clin Oncol
, 2007