Real-world outcomes with avelumab + axitinib in patients with advanced renal cell carcinoma in Japan: subgroup analyses from the J-DART2 study by International Metastatic Renal Cell Carcinoma Database Consortium risk classification.

Abstract

Background: Avelumab + axitinib was approved for the treatment of advanced renal cell carcinoma (aRCC) in Japan in December 2019. We report long-term real-world subgroup analyses with first-line avelumab + axitinib in patients with aRCC by International Metastatic RCC Database Consortium (IMDC) risk classification from the J-DART2 study in Japan.

Methods: J-DART2 was a multicenter, noninterventional, retrospective study examining characteristics, treatment patterns, and outcomes in patients with aRCC who started first-line avelumab + axitinib in Japan between December 2019 and October 2022.

Results: Data from 150 patients across 19 sites were analyzed. IMDC risk was favorable in 39 patients (26.0%), intermediate (1 risk factor) in 46 (30.7%), intermediate (2 risk factors) in 36 (24.0%), and poor in 29 (19.3%). Baseline characteristics were generally consistent across IMDC risk subgroups. In subgroups with favorable, intermediate (1 risk factor), intermediate (2 risk factors), and poor risk, median progression-free survival was 31.0, 15.3, 16.4, and 8.1 months; median overall survival (OS) was not reached, but 24-month OS rates were 95.2%, 91.3%, 85.3%, and 57.6%, respectively. Objective response rates were 54.5%, 56.8%, 47.1%, and 54.2%, respectively. High-dose corticosteroid treatment for immune-related adverse events was administered in 5.1%, 8.7%, 8.3%, and 6.9% of patients, respectively.

Conclusion: Subgroup analyses from J-DART2 confirm the long-term real-world effectiveness of first-line avelumab + axitinib across IMDC risk groups in patients with aRCC in Japan. Our findings were consistent with previous analyses by IMDC risk and support the favorable benefit-risk profile of avelumab + axitinib in clinical practice in Japan.