Financial & competing interests disclosure
M Machtay is the Deputy Chair of the Radiation Oncology Therapy Group. The authors (P Linden, M Yao, M Machtay and SS Lo) are in the process of opening the RTOG 1021 trial at University Hospitals Seidman Cancer Center (OH, USA). The authors have no other relevant affiliations or financial involvement with any organization or entity with a financial interest in or financial conflict with the subject matter or materials discussed in the manuscript apart from those disclosed.
No writing assistance was utilized in the production of this manuscript.