RT Journal Article SR Electronic T1 Acceptance and commitment therapy for young brain tumour survivors: study protocol for an acceptability and feasibility trial JF BMJ Open JO BMJ Open FD British Medical Journal Publishing Group SP e051091 DO 10.1136/bmjopen-2021-051091 VO 11 IS 6 A1 Sam Malins A1 Ray Owen A1 Ingram Wright A1 Heather Borrill A1 Jenny Limond A1 Faith Gibson A1 Richard G Grundy A1 Simon Bailey A1 Steven C Clifford A1 Stephen Lowis A1 James Lemon A1 Louise Hayes A1 Sophie Thomas YR 2021 UL http://bmjopen.bmj.com/content/11/6/e051091.abstract AB Introduction Survivors of childhood brain tumours have the poorest health-related quality of life of all cancer survivors due to the multiple physical and psychological sequelae of brain tumours and their treatment. Remotely delivered acceptance and commitment therapy (ACT) may be a suitable and accessible psychological intervention to support young people who have survived brain tumours. This study aims to assess the feasibility and acceptability of remotely delivered ACT to improve quality of life among these young survivors.Methods and analysis This study is a two-arm, parallel group, randomised controlled trial comparing ACT with waitlist control at 12-week follow-up as the primary endpoint. Seventy-two participants will be recruited, who are aged 11–24 and have completed brain tumour treatment. Participants will be randomised to receive 12 weeks of ACT either immediately or after a 12-week wait. The DNA-v model of ACT will be employed, which is a developmentally appropriate model for young people. Feasibility will be assessed using the proportion of those showing interest who consent to the trial and complete the intervention. Acceptability will be assessed using participant evaluations of the intervention, alongside qualitative interviews and treatment diaries analysed thematically. A range of clinical outcome measures will also assess physical and mental health, everyday functioning, quality of life and service usage at 12-week follow-up. The durability of treatment effects will be assessed by further follow-up assessments at 24 weeks, 36 weeks and 48 weeks.Ethics and dissemination Ethical approval was given by East Midlands, Nottingham 1 Research Ethics Committee (Reference: 20/EM/0237). Study results will be disseminated in peer-reviewed journals, through public events and relevant third sector organisations.Trial registration ISRCTN10903290; NCT04722237.