Capture of common adverse events (AEs) by patient-reported outcome measures (PROMs) used in clinical trials of immuno-oncology (IO)-based combination therapies in advanced renal cell carcinoma (aRCC).

Abstract

263 Background: IO-based combination therapies have improved clinical outcomes in aRCC; several are approved for first-line use. AEs can significantly impact quality of life, and IO therapy is associated with AEs that differ from prior standard treatment toxicities. PROMs capture health status directly from patients and often include the symptoms and severity of AEs. Our aim was to assess the extent to which the PROMs used in pivotal trials covered the most common AEs associated with IO combinations. Methods: This was a review of data from four phase 3, randomized, open-label studies of IO-based combinations in previously untreated advanced/metastatic clear-cell RCC (CheckMate 214, CheckMate 9ER, KEYNOTE-426, CLEAR [KEYNOTE-581]). The 10 most common all-grade, all-cause AEs (%) and the PROMs used in each trial were identified. The inclusion of the most common AEs in the PROMs was explored descriptively. Results: The most common AEs and their frequencies varied among the different combination regimens. There was also variation across trials in the PROMs used. Capture of the most common AEs by the PROMs used in each study is summarized in the Table. Conclusions: Current PROMs used in clinical trials of IO combinations for aRCC tend to capture more of the common AEs for IO-IO vs IO-tyrosine kinase inhibitor regimens. PROMs that reflect the unique AE profiles of IO therapies, especially from the patient perspective, may be needed for future trials.[Table: see text]