Wednesday, December 08, 2021 The HN10 study, "A Phase II Single Arm Trial of Elective Volume Adjusted De-Escalation Radiotherapy (EVADER) in Patients with Low-risk HPV-related Oropharyngeal Squamous Cell Carcinoma has closed to accrual after reaching its accrual target. Thank you to all of the member centers who participated. The purpose of this study is to find out whether radiotherapy to some of the lymph node areas can be safely omitted to decrease side effects without increasing the risk of the tumour coming back. For more information about the study please visit the CCTG HN10 study page.