The Use and Development of Patient Reported Outcome Measures (PROMs) in the Adoptive Cell Therapy (ACT) Setting

The goals of this observational study is to 1. To develop an Adoptive Cell Therapy (ACT)-specific PROM (Patient Reported Outcome Measure) to assess quality of life and symptomatology 2. To develop guidelines/recommendations for the use of PROMs in ACT trials Participants will be recruited in four separate stages: Stage 1: Semi-structured interviews to generate PROM items. Stage 2: Cognitive interviews to ensure that all items are clear and easily understood. Stage 3: Initial pilot of the draft PROM to enable item reduction and refinement. Stage 4: Pilot of final PROM to assess acceptability in a clinical setting.