[Review] Development of a core outcome set for adolescents and young adults with cancer

Adolescents and young adults aged 15–39 years diagnosed with cancer are faced with unique challenges, which affect key developmental milestones and can create complex care needs. The aim of this study was to reach international consensus on the minimum set of outcomes to measure through the development of a core outcome set (COS). The COS development followed published methodological standards. A literature review and interviews with adolescents and young adults with cancer and health-care professionals generated a comprehensive list of 129 outcomes, spanning clinical and patient-reported outcomes relevant to adolescents and young adults with cancer.