Prof. Manjit Dosanjh, as part of the Lancet Oncology Commission under the leadership of May Abdel-Wahab and Professor Andrew Scott (Olivia Newton-John Cancer Research Institute and Austin Health), released results following on from the 2015 Lancet Oncology Commission on expanding global access to radiotherapy. They assess access and availability of radiotherapy to date, and address the important issue of access to the promising field of theranostics at a global level.