期刊
JOURNAL OF CLINICAL ONCOLOGY
卷 23, 期 36, 页码 9097-9104出版社
AMER SOC CLINICAL ONCOLOGY
DOI: 10.1200/JCO.2005.01.3771
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资金
- NCI NIH HHS [CA45808, CA76447, CA37981, CA58861, CA45807, CA35261, CA27057, CA35128, CA74647, CA32102, CA46441, CA58686, CA67663, CA22433, CA35431, CA20319, CA45377, CA67575, CA16385, CA14028, CA63844, CA12644, CA58416, CA52654, CA42777, CA45461, CA38926, CA74811, CA46282, CA11083, CA35176, CA58658, CA58882, CA35090, CA35192, CA46113, CA35119] Funding Source: Medline
Purpose: Tumor hypoxia confers chemotherapy resistance. Tirapazamine is a cytotoxin that selectively targets hypoxic cells. We conducted a phase III clinical trial to determine whether the addition of tirapazamine to paclitaxel and carboplatin offered a survival advantage when used in the treatment of patients with advanced non-small-cell lung cancer (NSCLC). Patients and Methods; Of 396 patients registered, 367 eligible patients were randomly assigned to either arm 1 (n = 181), which consisted of treatment every 21 days with paclitaxel 225 mg/m(2)/3 h, carboplatin (area under the curve = 6), and tirapazamine 260 mg/m(2) in cycle 1 (which was escalated, if tolerable, to 330 mg/m(2) in cycle 2), or arm 2 (n = 186), which consisted of paclitaxel and carboplatin as in arm 1 with no tirapazamine. Results: Patient characteristics were similar between the two arms. There were no statistically significant differences in response rates, progression-free survival, or overall survival. Patients on arm 1 had significantly (P < .05) more abdominal cramps, fatigue, transient hearing loss, febrile neutropenia, hypotension, myalgias, and skin rash and were removed from treatment more often as a result of toxicity than patients in arm 2 (26% v 13%, respectively; P = .003). More than 40% of patients did not have the tirapazamine dose escalated, primarily because of toxicity. The trial was closed early after an interim analysis demonstrated that the projected 37.5% improvement in survival (8 v 11 months median survival) in arm 1 was unachievable (P = .003). Conclusion: The addition of tirapazamine to paclitaxel and carboplatin does not result in improved survival in advanced NSCLC compared with paclitaxel and carboplatin alone but substantially increases toxicity.
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