Patient-reported outcomes in patients with hematologic malignancies treated with CAR T-cell therapy in Europe

Patient-reported outcomes (PROs) give direct insights into the treatment's impact on patient's life and complement clinical outcomes. However, since the advent of chimeric antigen receptor T-cell therapy (CAR-T), PROs have been underreported. Particularly, little is known about long-term health-related quality of life (HRQoL) and dimensions such as mental- and social well-being, working life, and financial burden. Therefore, we evaluated multidimensional PROs in a cross-sectional study among European patients who received CAR-T for hematologic malignancies. Patients completed validated questionnaires (EQ-5D-5L/EORTC-QLQ-C30/PCL-5/modified-iPCQ) and ad hoc items on treatment experiences, unmet care needs, and HRQoL. The survey was available online (January-October 2023) in 7 languages. Outcomes were compared with the European general population, a matched CAR-T-naive cohort with hematologic malignancies and across subgroups, using established thresholds for clinically important differences/problems and regression models. From 10 European countries, 389 patients participated (>1 year post-CAR-T: 56%). Mean EQ-VAS was 73.1 (standard deviation, 18.5). HRQoL was similar or better than reference cohorts, except for role-, social-, and cognitive-functioning. Physical-functioning problems were most frequently reported (41%), particularly by women, older individuals, and those who experienced neurotoxicity. The latter subgroup also reported more cognitive- and social-functioning problems. Anxiety regarding disease recurrence (76%), infections (66%) and long-term side effects (59%) was common. Among working-age patients, 72% could continue paid work after CAR-T. Younger patients (32%) reported more financial difficulties than older patients (9%). This study shows favorable general HRQoL after CAR-T compared with reference cohorts. However, a notable proportion of patients experienced problems in physical-, mental- and social well-being. We identified high-risk subgroups and care needs that should be addressed during follow-up.