Journal
CLINICAL CANCER RESEARCH
Volume 23, Issue 12, Pages 2924-2927Publisher
AMER ASSOC CANCER RESEARCH
DOI: 10.1158/1078-0432.CCR-16-2157
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The FDA approved TAS-102 (Lonsurf; Taiho Oncology, Inc.) for the treatment of patients with metastatic colorectal cancer (mCRC) who have been previously treated with fluoropyrimidine-, oxaliplatin-, and irinotecan-based chemotherapy; an anti-VEGF biological therapy; and if RAS wild type, an anti-EGFR therapy. In an international, multicenter, double-blinded, placebo-controlled trial (TPU-TAS-102-301, herein referred to as RECOURSE), 800 patients with previously treated mCRC were randomly allocated (2: 1) to receive either TAS-102 35 mg/m(2) orally twice daily aftermeals on days 1 through 5 and 8 through 12 of each 28-day cycle (n = 534) or matching placebo (n = 266). The trial demonstrated a statistically significant improvement in overall survival for those randomized to receive TAS-102, with a median survival of 7.1 months in the TAS-102 arm [confidence interval (CI), 6.5-7.8] and 5.3 months in the placebo arm [CI, 4.6-6.0; hazard ratio (HR), 0.68; 95% CI, 0.58-0.81; P < 0.001, stratified log-rank test]. The trial also demonstrated a statistically significant prolongation of progression-free survival (HR, 0.47; 95% CI, 0.40-0.55; P < 0.001). The most common adverse reactions, in order of decreasing frequency, observed in the patients who received TAS-102 were anemia, neutropenia, asthenia/fatigue, nausea, thrombocytopenia, decreased appetite, diarrhea, vomiting, abdominal pain, and pyrexia. Adverse events led to discontinuation of TAS-102 in 3.6% of patients, and 13.7% required a dose reduction. The most common adverse reactions leading to dose reduction were neutropenia, anemia, febrile neutropenia, fatigue, and diarrhea. (C) 2017 AACR.
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