Conflict of Interest The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: Mary E. Booth reports a relationship with Astellas Pharma Ltd that includes speaking and lecture fees. Maria A. Hawkins reports a relationship with the UCLH National Institute for Health and Care Research Biomedical Science Centre that includes funding grants. Sheraz R. Markar reports a relationship with Barco that includes consulting or advisory. Christopher J. Peters reports a relationship with Bristol Myers Squibb Co that includes consulting or advisory. Elizabeth C. Smyth reports a relationship with AstraZeneca that includes consulting or advisory and funding grants, with Bristol Myers Squibb Co that includes consulting or advisory, funding grants, and speaking and lecture fees, with Mirati Therapeutics Inc that includes consulting or advisory and non-financial support, with Amgen Inc that includes speaking and lecture fees and travel reimbursement, with Astellas Pharma Ltd that includes consulting or advisory, with BeiGene that includes consulting or advisory, with Daiichi Sankyo Inc that includes consulting or advisory, with Merck Sharp & Dohme UK Ltd that includes consulting or advisory, with Novartis that includes consulting or advisory and speaking and lecture fees, with Pfizer that includes consulting or advisory, with Viracta Therapeutics Inc that includes consulting or advisory, and with Zymeworks Biopharmaceuticals Inc that includes consulting or advisory. Tom D. L. Crosby reports a relationship with Amgen Inc that includes consulting or advisory. Tom D. L. Crosby reports a relationship with Astellas Pharma Ltd that includes consulting or advisory, with AstraZeneca that includes consulting or advisory, with Bristol Myers Squibb Co that includes consulting or advisory, with Merck Sharp & Dohme UK Ltd that includes consulting or advisory, and with Roche that includes consulting or advisory. Christopher W. Bleaney is a member of the Clinical Oncology (Royal College of Radiologists (Great Britain)) Peer Review Training Programme. Elizabeth C. Smyth chairs the European Organisation for Research and Treatment of Cancer Gastric Cancer Taskforce. Christopher J. Peters, Elizabeth C. Smyth and Tom D. L. Crosby are UKIOG Trustees. All authors were involved in the planning and delivery of the UKIOG Cancer Update 2024 event. If there are other authors, they declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.