a positive trendp = 0.07
Standardizing doses by converting them to biologically effective doses (BEDs) at α/β = 4 and α/β = 10 did not reveal a clear advantage for specific dose levels in treating oligoprogressive sites, with the exception of a positive trend towards improved PFS-AR in patients treated with BED > 75 Gy at α/β = 4 ( p = 0.07).