Assessing the unmet needs of patients with advanced cancer treated by biological and precision therapies: protocol for TARGET, a mixed methods study

INTRODUCTION: Biological and precision therapies are increasingly used in cancer treatment. Although they may improve survival, they are also associated with various—and unique—adverse effects, which can be long lasting. Little is known about the experiences of people treated with these therapies. Moreover, their supportive care needs have not been fully explored. Consequently, it is unclear whether existing instruments adequately capture the unmet needs of these patients. The TARGET study seeks to address these evidence gaps by exploring the needs of people treated with these therapies with the aim of developing an unmet needs assessment instrument for patients on biological and precision therapies. METHODS AND ANALYSIS: The TARGET study will adopt a multi-methods design involving four Workstreams (1) a systematic review to identify, describe and assess existing unmet needs instruments in advanced cancer; (2) qualitative interviews with patients on biological and precision therapies, and their healthcare professionals, to explore experiences and care needs; (3) development and piloting of a new (or adapted) unmet needs questionnaire (based on the findings of Workstream 1 and Workstream 2) designed to capture the supportive care needs of these patients; and finally, (4) a large-scale patient survey using the new (or modified) questionnaire to determine (a) the psychometric properties of the questionnaire, and (b) the prevalence of unmet needs in these patients. Based on the broad activity of biological and precision therapies, the following cancers will be included: breast, lung, ovarian, colorectal, renal and malignant melanoma. ETHICS AND DISSEMINATION: This study was approved by National Health Service (NHS) Heath Research Authority Northeast Tyne and Wear South Research Ethics Committee (REC ref: 21/NE/0028). Dissemination of the research findings will take several formats to reach different audiences, including patients, healthcare professionals and researchers.