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  • Title: Subgroup analysis of East Asians in RAINBOW: A phase 3 trial of ramucirumab plus paclitaxel for advanced gastric cancer.
    Author: Muro K, Oh SC, Shimada Y, Lee KW, Yen CJ, Chao Y, Cho JY, Cheng R, Carlesi R, Chandrawansa K, Orlando M, Ohtsu A.
    Journal: J Gastroenterol Hepatol; 2016 Mar; 31(3):581-9. PubMed ID: 26317322.
    Abstract:
    BACKGROUND AND AIM: East Asia has higher gastric cancer incidence and mortality rates than other regions. We present a subgroup analysis of East Asians in the positive study RAINBOW. METHODS: Patients with advanced gastric or gastroesophageal junction adenocarcinoma previously treated with platinum and fluoropyrimidine received ramucirumab 8 mg/kg or placebo on days 1 and 15 plus paclitaxel 80 mg/m(2) on days 1, 8, and 15 of a 28-day cycle. RESULTS: Of 665 intention-to-treat patients, 223 were East Asian. Median overall survival was 12.1 months for ramucirumab plus paclitaxel and 10.5 months for placebo plus paclitaxel (hazard ratio: 0.986, 95% confidence interval: 0.727-1.337, P = 0.929). Median progression-free survival was 5.5 months for ramucirumab plus paclitaxel and 2.8 months for placebo plus paclitaxel (hazard ratio: 0.628, 95% confidence interval: 0.473-0.834, P = 0.001). Objective response rates were 34% for ramucirumab plus paclitaxel and 20% for placebo plus paclitaxel. Grade ≥ 3 neutropenia (60% vs 28%) and leukopenia (34% vs 13%) were higher for ramucirumab plus paclitaxel. The rate of febrile neutropenia was low (4% vs 4%). Special interest adverse events included any grade bleeding/hemorrhage (55% vs 25%), proteinuria (27% vs 7%), and hypertension (22% vs 2%). CONCLUSIONS: Ramucirumab plus paclitaxel significantly improves progression-free survival and response rate, with prolonged median overall survival and an acceptable safety profile in East Asians with advanced gastric cancer.
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