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01.12.2010 | PHASE I STUDIES | Ausgabe 6/2010 Open Access

Investigational New Drugs 6/2010

Phase I clinical and pharmacokinetic study of sorafenib in combination with carboplatin and paclitaxel in patients with advanced non–small cell lung cancer

Zeitschrift:
Investigational New Drugs > Ausgabe 6/2010
Autoren:
Isamu Okamoto, Masaki Miyazaki, Ryotaro Morinaga, Hiroyasu Kaneda, Shinya Ueda, Yoshikazu Hasegawa, Taroh Satoh, Akira Kawada, Masahiro Fukuoka, Koichi Fukino, Takahiko Tanigawa, Kazuhiko Nakagawa

Summary

Objectives Unsatisfactory efficacy of current treatments for advanced lung cancer has prompted the search for new therapies, with sorafenib, a multikinase inhibitor, being one candidate drug. This phase I trial was conducted to evaluate drug safety and pharmacokinetics as well as tumor response of sorafenib in combination with paclitaxel and carboplatin in patients with advanced non-small cell lung cancer (NSCLC). Methods Eligible patients received paclitaxel (200 mg/m2) and carboplatin (area under the curve [AUC]of 6 mg min mL−1) on day 1 and sorafenib (400 mg, twice daily) on days 2 through 19 of a 21-day cycle. Results Four of the initial six patients (cohort 1) experienced dose-limiting toxicities (DLTs), resulting in amendment of the treatment protocol. An additional seven patients (cohort 2) were enrolled, two of whom developed DLTs. DLTs included erythema multiforme, hand-foot skin reaction, and elevated plasma alanine aminotransferase in cohort 1 as well as gastrointestinal perforation at a site of metastasis and pneumonia in cohort 2. Most adverse events were manageable. One complete and six partial responses were observed among the 12 evaluable patients. Coadministration of the three drugs had no impact on their respective pharmacokinetics. Conclusion The present study confirmed that sorafenib at 400 mg once daily in combination with carboplatin AUC 5 mg min mL−1 and paclitaxel 200 mg/m2 is feasible in Japanese patients with advanced NSCLC. The results of this study also showed that this combination therapy had encouraging antitumor activity and was not associated with relevant pharmacokinetic interaction in Japanese NSCLC patients.

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