{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,29]],"date-time":"2026-06-29T10:49:26Z","timestamp":1782730166636,"version":"3.54.5"},"reference-count":49,"publisher":"BMJ","issue":"2","license":[{"start":{"date-parts":[[2026,2,2]],"date-time":"2026-02-02T00:00:00Z","timestamp":1769990400000},"content-version":"unspecified","delay-in-days":1,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/100008719","name":"Movember Foundation","doi-asserted-by":"publisher","award":["MA-CT20-010"],"award-info":[{"award-number":["MA-CT20-010"]}],"id":[{"id":"10.13039\/100008719","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100000771","name":"Prostate Cancer UK","doi-asserted-by":"publisher","award":["MA-CT20-010"],"award-info":[{"award-number":["MA-CT20-010"]}],"id":[{"id":"10.13039\/501100000771","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["BMJ Open"],"accepted":{"date-parts":[[2025,10,8]]},"published-print":{"date-parts":[[2026,2]]},"abstract":"\n Introduction<\/jats:title>\n \n Within the UK there are 33 deaths every day from prostate cancer, second only to lung cancer as the most common cause of cancer death in males in the UK. Of the 55\u2009000 new cases each year, up to 50% of these patients will receive radiotherapy either alone or after prostatectomy. Although there have been significant improvements in the accuracy of radiotherapy delivery leading to better tumour targeting and a reduction in dose to normal tissues, significant permanent genito-urinary or gastrointestinal-related side effects are all too common. With nearly 80% of patients with prostate cancer surviving for 10 years or more, minimising life-limiting radiation damage to normal tissues is vitally important. However, at present, it is not possible to identify which patients will suffer a poorer outcome after radiotherapy. The aim of this study, improving radiotherapy in\n PROS<\/jats:bold>\n tate cancer using\n E<\/jats:bold>\n le\n C<\/jats:bold>\n tronic population-based health\n CA<\/jats:bold>\n re data (PROSECCA), is to do this by using the existing information in a patient\u2019s digital healthcare record. By linking primary, secondary and tertiary clinical data, including digital image information, with radiotherapy treatment plans and outcome data, the PROSECCA study will identify de novo predictive biomarkers of radiation response and provide clinicians with a tool to individualise a radiotherapy dose and plan to maximise cure and minimise toxicity.\n <\/jats:p>\n <\/jats:sec>\n \n Methods and analysis<\/jats:title>\n The PROSECCA study is a large multidisciplinary project, the purpose of which is to analyse healthcare records from up to 15\u2009000 patients with prostate cancer who underwent radiotherapy in the treatment of their cancer in Scotland between 2010 and 2022. Through the linkage of data obtained specifically for radiotherapy and data held within each patient\u2019s unique electronic health record (EHR), the factors that indicate why some patients have a poor response to treatment, or an increased risk of side effects from radiation, will be identified. This will be made possible by the use of artificial intelligence and machine learning (AL\/ML), which will help to identify at-risk patients earlier and allow adaptation of their treatment accordingly.<\/jats:p>\n <\/jats:sec>\n \n Ethics and dissemination<\/jats:title>\n The study is being conducted in accordance with the ethical principles set out in the Declaration of Helsinki and Good Clinical Practice that respects and protects the rights, and maintains confidentiality, of all trial participants. The study protocol (V.1.0) was reviewed by the South Central Oxford A Research Ethics Committee (REC) on 13 December 2021 and received a favourable opinion subject to each National Health Service (NHS) organisation confirming permission for patients treated within their area. Approval for the use of unconsented healthcare record data for patients included in the study and treated at one of the five Scottish Cancer Centres required an application to the NHS Scotland Public Benefit and Privacy Panel for Health and Social Care (HSC-PBPP). Full approval from the HSC-PBPP panel was received on 1 July 2024, which covered the use of pseudoanonymised EHR data for all patients participating in the study. The study is publicly listed on the NHS Health Research Authority site, with IRAS ID 306245 and REC reference 21\/SC\/0402. Dissemination of the study findings will take place through field-leading cancer, radiation oncology and medical physics journals. All manuscripts will be approved by the main study team and authorship determined by mutual agreement.<\/jats:p>\n <\/jats:sec>\n \n Trial registration number<\/jats:title>\n \n NCT06714630<\/jats:ext-link>\n .\n <\/jats:p>\n <\/jats:sec>","DOI":"10.1136\/bmjopen-2025-104408","type":"journal-article","created":{"date-parts":[[2026,2,17]],"date-time":"2026-02-17T11:07:29Z","timestamp":1771326449000},"page":"e104408","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":1,"title":["Protocol for the PROSECCA study: a new approach for predicting radiotherapy outcome using artificial intelligence and electronic population-based healthcare 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