Dr Hisham Mehanna (University of Birmingham, Birmingham, UK) and Dr Sue Yom (University of California, San Francisco, San Francisco, CA, USA) discuss their four-paper Series on Head and Neck Cancer Consensus Recommendations in diagnosis and clinical trial endpoints.

Professor M Saiful Huq (Department of Radiation Oncology, University of Pittsburgh School of Medicine, Pittsburgh, USA) and Dr Mostafa Aziz Sumon (Radiation Oncology, Kurmitola General Hospital, Dhaka, Bangladesh) discuss their Series on Cancer Care in South Asian Association for Regional Cooperation (SAARC) Countries.

Professor Ian Tannock (Princess Margaret Cancer Centre and the University of Toronto, Toronto, Canada) discusses his Policy Review on Common Sense Oncology principles for the design, analysis and reporting of phase 3 randomised clinical trials.

Professor Amar U. Kishan (Department of Radiation Oncology, University of California, Los Angeles, CA, USA) discusses his paper on HYpofractionateD RAdiotherapy for Prostate Cancer (HYDRA): An Individual Patient Data Meta-Analysis of Randomised Trials in the MARCAP Consortium.

Ariana Znaor (Cancer Surveillance Branch, International Agency for Research on Cancer, Lyon, France) discusses her Review on cancer surveillance in the Eastern Mediterranean Region: a 10-year IARC-WHO EMRO collaboration.

Dr Yannick Romero (Union for International Cancer Control) discusses his Policy Review on the changing landscape of the national cancer control plans and his work with the international cancer control partnership.

Dr Steven Horwitz (Memorial Sloan Kettering Cancer Center, New York, NY, USA) discusses a phase 1 study of valemetostat in relapsed or refractory non-Hodgkin lymphoma and a phase 2 study of valemetostat in relapsed or refractory peripheral T-cell lymphoma.

May Abdel-Wahab (Division of Human Health, Department of Nuclear Science and Applications, International Atomic Energy Agency, Vienna, Austria) and Andrew Scott (Department of Molecular Imaging and Therapy, Austin Health, Melbourne, VIC, Australia) discuss The Lancet Oncology Commission on Radiotherapy and Theranostics.

Dr Zachary Zumsteg (Cedars-Sinai Medical Center, Los Angeles, CA, USA) discusses his Review on the challenges and opportunities for early phase clinical trials of novel drug-radiotherapy combinations.

Dr Kanwal Raghav (Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA) discusses his Article entitled, ‘Trastuzumab deruxtecan in HER2-positive advanced colorectal cancer (DESTINY-CRC02): primary results from a randomised, multicentre, phase 2 trial’.