背景阅读:徐瑞华教授在ASCO会议上的壁报摘要
A phase III study of S-1 plus cisplatin versus fluorouracil plus cisplatin in patients with advanced gastric or gastroesophageal junction adenocarcinoma.
Author(s): Rui-hua Xu, Guo-ping Sun, Hui-shan Lu, Liu Yun Peng, Jian-ming Xu, Mei-zuo Zhong, He-long Zhang, Shi-ying Yu, Wei Li, Xiao-hua Hu, Jie Jun Wang, Ying Cheng, Jun-tian Zhou, Zeng-qing Guo, Zhongzhen Guan; Department of Medical Oncology, Sun Yat-sen University Cancer Center, Guangzhou, China; Department of Oncology, The First Affiliated Hospital of An Hui Medical University, Hefei, China; Department of Surgical Oncology, Fujian Medical University union Hospital, Shanghai, China; First Hospital of China Medical University, Shenyang, China; Department of Oncology, Chinese People's Liberation Army 307 Hospital, Beijing, China; Department of Oncology, Xiangya Hospital Central-South University, Changsha, China; Department of Oncology, Tangdu Hospital of the Fourth Liberation Army University, Xi-an, China; Department of Oncology, Tongji Hospital Affiliated to Tongji Medical College of Huazhong University of Science and Technology, Wuhan, China; Department of Oncology, The First Affiliated Hospital to Jilin University, Jilin, China; Department of Oncology, The Guangxi Zhuang Autonomous Region Tumor Hospital, Nanning, China; Shanghai Chong Zhen Hospital, Shanghai, China; Jilin Provincial Cancer Hospital, Changchun, China; Department of Oncology, Tumor Hospital of Hunan Province, Changsha, China; Department of Oncology, Tumor Hospital of Fujian Province, Fuzhou, China; State Key Laboratory of Oncology in South China, Cancer Center of Sun Yat-sen University, Guangzhou, China
【Abstract】
Background: A combination of S-1 and cisplatin (DDP) has been shown to be effective and safe for the first-line treatment of advanced gastric cancer in Japan. This is the first randomized phase III trial to compare S-1 plus DDP with 5-fluorouracil (5-Fu) plus DDP in Asia.
Methods: This is an open-label, multicenter, phase 3, randomized controlled study. Patients with gastric or gastro-oesophageal junction adenocarcinoma were eligible for inclusion. Patients were randomly assigned in a 1:1 ratio to receive S-1 plus DDP (experiment group) or 5-Fu plus DDP (control group) for 6 cycles. In the experiment group, the dose of S-1 was 80 mg/m2/day, po, twice daily on day 1-21 and DDP was 20mg/m2 iv on day 1-4, repeat every 5 weeks. In the control group, 5-Fu was given as 0.8g/m2/d CI 120h ,and the dose of DDP was the same with the experiment group, while repeat every 4 weeks. Allocation was by block randomization stratified by Eastern Cooperative Oncology Group performance status, sites of metastasis and prior gastrectomy. The primary endpoint was time to progression (TTP). Secondary end points included time to failure (TTF), overall survival (OS), and quality of life.
Results: Totally 255 patients were enrolled into the study, of whom 236 were included in the analysis (n=120; n=116). Median TTP was 5.51 months (95% CI 4.59-6.26) in those assigned to experiment group compared with 4.62 months (95% CI 4.00-6.33) in the control group (hazard ratio [HR] 1.03; 95%CI 0.76-1.39, p=0.86). In the experiment and control groups, response rates were 22.5% vs 21.5%; P=0.86. Median OS was 10.00 months (95% CI 8.59-14.52) in the experiment group compared with 10.46 months (8.92-13.84) in the control group (HR 1.05; 95%CI 0.71-1.54, p=0.82). The most common adverse events in both groups were anemia (S-1 plus cisplatin, 80.17% vs 5-Fu plus cisplatin, 71.19%), leukopenia (71.90% vs 62.71%), neutropenia (68.60% vs 55.93%), nausea (50.41% vs 60.17%), thrombocytopenia (44.63% vs 26.27%), vomiting (42.98% vs 42.37%) and anorexia (38.02% vs 41.53%).
Conclusions: S-1 plus DDP is an effective and tolerable option for patients with advanced gastric or gastro-oesophageal junction adenocarcinoma.
Clinical trial information: NCT01198392.
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