PURPOSE: The combination of sorafenib with chemotherapy is well-tolerated and is associated with encouraging response rates in several malignances. Both docetaxel and cisplatin are active in gastric cancer. A phase II study was conducted to determine the efficacy and toxicity of combined sorafenib, docetaxel, and cisplatin in patients with metastatic or advanced adenocarcinoma of stomach or gastroesophageal junction (GEJ).
PATIENTS AND METHODS: Forty-four chemotherapy-naïve patients with Eastern Cooperative Oncology Group performance status 0 or 1, of whom 80% had metastatic disease and two thirds had poorly differentiated gastric or GEJ adenocarcinoma, were enrolled. The treatment regimen was sorafenib 400 mg orally twice a day for 21 days, docetaxel 75 mg/m(2) intravenously on day 1, and cisplatin 75 mg/m(2) intravenously on day 1, repeated every 21 days. The primary end point was response rate to the combination. Toxicity, overall survival, and progression-free survival were assessed as secondary end points.
RESULTS: Eighteen of the 44 eligible and treated patients showed partial responses (41%; 90% CI, 28% to 54%). The median progression-free survival was 5.8 months (90% CI, 5.4 to 7.4 months). The median overall survival was 13.6 months (90% CI, 8.6 to 16.1 month). The major toxicity of this regimen was neutropenia, which reached grade 3 to 4 in 64% of patients. One patient experienced hemorrhage at the tumor site.
CONCLUSION: The combination of sorafenib, docetaxel, and cisplatin has an encouraging efficacy profile with tolerable toxicity. Additional studies of sorafenib with chemotherapy are warranted in gastric cancer.
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