Sorafenib treatment of Asian patients with advanced renal cell carcinoma (RCC) in daily practice: Subset analysis of the large non-interventional PREDICT study.

Abstract

4628 Background: Previous studies with sorafenib in Asian patients with advanced RCC were relatively small and used strict entry criteria. Here we investigated safety and efficacy in a large subset of Asian patients in the prospective, non-interventional PREDICT study of sorafenib in routine practice (NCT 00895674). Methods: Patients were eligible based on a diagnosis of advanced RCC and the decision by the investigator to prescribe sorafenib under compliance of the local product label. Tumor status, patients’ performance and physician assessment of efficacy and tolerability were collected up to 12 months. Results: Between Jan 2007 and June 2010, 1092 patients were enrolled in China (n=1033), South Korea (n=55), the Philippines (n=3) and Indonesia (n=1). In the efficacy population (n=909), baseline characteristics were: 71% male; 89% <70 years old; 89% clear cell histology; 78% prior nephrectomy; 56% prior systemic therapy; 16% high MSKCC risk; 35% ECOG PS ≥2; 5% brain metastases. Overall, 19% of patients had ≥1 concomitant disease at baseline; the most frequent concomitant diseases were hypertension (14%) and diabetes (6%). Initial sorafenib dose was 800 mg daily in 97% of patients, of whom 91% were also receiving 800 mg daily as last dose. Median duration of sorafenib treatment was 9.7 months (range 0.2–24.1), and in clinically relevant subgroups was as follows: treatment-naïve, 9.7 months; high MSKCC risk, 9.3 months; brain metastases, 8.4 months; age ≥70 years, 7.6 months; ECOG PS 2, 9.7 months; ECOG PS 3, 6.1 months. At last follow up, 63% of physicians reported good/very good efficacy and 59% good/very good tolerability. Sorafenib was well tolerated; <2% of the safety population (n=1022) reported serious drug-related adverse events (SDRAEs) and only 3% discontinued due to DRAEs. In all, 35% of patients reported a DRAE, with the most frequent being hand-foot skin reaction (21%), diarrhea (7%), rash (7%), alopecia (5%), hypertension (3%). Conclusions: In this large subset of Asian patients with advanced RCC treated in daily practice settings, sorafenib was well tolerated and provided benefit, including in clinically relevant patient subgroups.