Published in:
Open Access 01-08-2014 | Original Article
A phase II trial of Cremorphor EL-free paclitaxel (Genexol-PM) and gemcitabine in patients with advanced non-small cell lung cancer
Published in: Cancer Chemotherapy and Pharmacology | Issue 2/2014
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Purpose
Genexol-PM is a Cremorphor EL (CrEL)-free polymeric micelle formulation of paclitaxel that allows higher-dose administration with less hypersensitivity. This study was designed to evaluate the efficacy and safety of Genexol-PM and gemcitabine combination in advanced non-small cell lung cancer patients as a first-line treatment.
Patients and methods
This is a prospective, single-arm, single-center phase II study. Patients with advanced NSCLC received Genexol-PM at 230 mg/m2 on day 1 and gemcitabine 1,000 mg/m2 on day 1 and day 8 of a 3-week cycle. Six cycles of chemotherapy were planned unless there was disease progression. The primary endpoint was overall response rate.
Results
Forty-three patients received the study drugs with a median of 4 cycles per patient (range 1–6). The overall response rate was 46.5 %. The median progression-free survival was 4.0 months (95 % CI 2.0–6.0 months), and median overall survival was 14.8 months (95 % CI 9.1–20.5 months). The most common toxicities were anemia (n = 29, 67 %), asthenia (n = 17, 40 %), myalgia (n = 16, 37 %), peripheral neuropathy (n = 15, 35 %), and diarrhea (n = 12, 30 %). The most common grade 3/4 adverse events were neutropenia (n = 7, 16 %) and pneumonia (n = 5, 12 %). Two patients died of pneumonia and dyspnea.
Conclusions
CrEL-free paclitaxel in combination with gemcitabine demonstrated favorable antitumor activity with little emetogenicities in non-small cell lung cancer patients. However, frequent grade 3/4 toxicities were observed, and safety should be evaluated thoroughly in future studies.