Zicheng Xu1, Xiao Li1, Feng Qi1,2, Xin Hu3, Yuxiao Zheng1, Hongzhou Cai1, Ting Xu1, Bin Yu1, Qing Zou1. 1. Department of Urologic Surgery, Jiangsu Cancer Hospital & Jiangsu Institute of Cancer Research & Affiliated Cancer Hospital of Nanjing Medical University, Nanjing 210009, China. 2. Department of Urology, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China. 3. Department of Urology, First Clinical Medical College of Nanjing Medical University, Nanjing 210029, China.
Abstract
BACKGROUND: This study assesses the clinical safety and efficacy of Gemcitabine and S-1 combination chemotherapy in sorafenib-refractory metastatic renal cell carcinoma (RCC) patients. METHODS: The baseline characteristics and survival outcomes of 19 patients suffering from metastatic and progressive sorafenib-refractory RCC were retrospectively collected and analyzed from January 2010 to April 2014. Patients were treated by combining Gemcitabine (1,000 mg/m2, day 1 and day 8 of every cycle of 21 days) and S-1 (40 mg/m2, twice a day for 14 days, followed by the rest period of 7 days), with a continual treatment of sorafenib 400 mg twice a day in a cycle of 28 days. RESULTS: After combination chemotherapy, the disease control rate was 68.4%. Among them, 6 patients (31.6%) had progressive disease (PD), 5 patients (26.3%) had stable disease (SD) and 8 patients (42.1%) had partial response (PR). The median time to progression (TTP) was 6.3 months (range, 2.0-32.7 months), and the median overall survival (OS) was 19.7 months (range, 5.7-45.0 months). In the survival analysis, comparing PD group, disease control (PR + SD) group showed an obviously longer TTP (median TTP: 9.5 vs. 2.0 months, 95% CI, 7.7-11.3 months, P<0.001) and OS (median OS: 21.0 vs. 8.3 months, 95% CI, 14.5-24.9 months, P<0.001). In univariate and multivariate analysis, TTP and OS were significantly associated with disease control condition. Side-effects were found in all patients at different degree, but only 3 patients suffered grade 3/4 toxicities (15.8%). No death related to treatment was observed. CONCLUSIONS: The combination chemotherapy could be a promising treatment option for advanced metastatic RCC (mRCC) patients after sorafenib refractory.
BACKGROUND: This study assesses the clinical safety and efficacy of Gemcitabine and S-1 combination chemotherapy in sorafenib-refractory metastatic renal cell carcinoma (RCC) patients. METHODS: The baseline characteristics and survival outcomes of 19 patients suffering from metastatic and progressive sorafenib-refractory RCC were retrospectively collected and analyzed from January 2010 to April 2014. Patients were treated by combining Gemcitabine (1,000 mg/m2, day 1 and day 8 of every cycle of 21 days) and S-1 (40 mg/m2, twice a day for 14 days, followed by the rest period of 7 days), with a continual treatment of sorafenib 400 mg twice a day in a cycle of 28 days. RESULTS: After combination chemotherapy, the disease control rate was 68.4%. Among them, 6 patients (31.6%) had progressive disease (PD), 5 patients (26.3%) had stable disease (SD) and 8 patients (42.1%) had partial response (PR). The median time to progression (TTP) was 6.3 months (range, 2.0-32.7 months), and the median overall survival (OS) was 19.7 months (range, 5.7-45.0 months). In the survival analysis, comparing PD group, disease control (PR + SD) group showed an obviously longer TTP (median TTP: 9.5 vs. 2.0 months, 95% CI, 7.7-11.3 months, P<0.001) and OS (median OS: 21.0 vs. 8.3 months, 95% CI, 14.5-24.9 months, P<0.001). In univariate and multivariate analysis, TTP and OS were significantly associated with disease control condition. Side-effects were found in all patients at different degree, but only 3 patients suffered grade 3/4 toxicities (15.8%). No death related to treatment was observed. CONCLUSIONS: The combination chemotherapy could be a promising treatment option for advanced metastatic RCC (mRCC) patients after sorafenib refractory.
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