Development of an alarm symptom-based risk prediction score for localized oesophagogastric adenocarcinoma (VIOLA score)

•Feasible prognostic tools for resectable gastroesophageal cancer are highly needed.•Alarm symptoms, patient and tumour characteristics are associated with prognosis.•The VIOLA risk prediction score is based on these three prognostic categories.•Sex, age, body mass index, location of the tumour, stage, stenosis and weight loss are included.•It is a feasible tool to help clinicians and patients with treatment decisions.