17049 Background: Genexol is a polymeric micelle loaded paclitaxel without Cremophor EL (CrEL). CrEL has been shown to cause hypersentivity reaction and neuropathy. To evaluate and efficacy, we conducted a phase II study of CrEL-free paclitaxel (genexol) and carboplatin in patients (pts) of advanced or metastatic NSCLC. Methods: Eligibility criteria included: stage IIIB or IV NSCLC without previous chemotherapy and radiotherapy; written informed consent; measurable lesion; age 18–75; ECOG PS 0–3; adequate bone marrow, liver, and renal function; and no CNS disease. The patients received genexol 225 mg/m2 IV on day 1, followed by carboplatin AUC = 6 IV on day 1 every 3 weeks. Primary end points are response and toxicity. Response evaluations were performed after cycles 2, 4, and 6 of chemotherapy according to the RECIST criteria. Results: 36 pts were enrolled between November 2002 and November 2005. Pts characteristics: median age 63 years (range 45–73), median ECOG PS 1 (range 0–3), 13 stage IIIB and 23 IV, 21 adenocarcinoma and 14 squamous cell carcinoma, and 1 large cell carcinoma. At present, 30 pts were evaluable for response and toxicity. Meidan number of treatment cycles was 4 (range 1–6). Seven pts needed dose reduction. Thirteen pts achieved partial response and 13 pts had stable disease. The response rate 43.3%. Grade (gr) 4 neutropenia occurred in 11 pts (36.7%). Gr 1/2 sensory neuropathy occurred in 13 pts (43.3%) and gr 3/4 sensory neuropathy occurred in 5 pts (50%) among 10 pts over 65 year old. Other toxicities included neutropenic fever in 9 pts (30%), gr 4 thrombocytopenia 3 patients (10%), gr 2 hepatic dysfunction 3%, and gr 3 fatigue 10%. Treatment related mortality was not occurred. Complete analysis will be presented. Conclusions: In this trial, the combination of genexol and carboplatin showed a significant activity with acceptable and manageable toxicities as first line treatment for patients with advanced or metastatic NSCLC and dose reduction needed in older patients. No significant financial relationships to disclose.
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