P025: RADAR: An international phase III, PET response-adapted, randomised trial in progress, comparing ABVD±ISRT with brentuximab vedotin+AVD±ISRT in patients with previously untreated limited-stage classical Hodgkin lymphoma - John Radford; Toyin Adedayo; Arzhang Ardavan; Sally F. Barrington; Leanne Berkahn; Stephane Chauvie; Laura Clifton-Hadley; Graham P. Collins; Michael Crump; David Cutter; Darren Edwards; Martin Hutchings; et al. (HemaSphere, 2022)