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  • Title: Phase II study of pemetrexed for second-line treatment of transitional cell cancer of the urothelium.
    Author: Sweeney CJ, Roth BJ, Kabbinavar FF, Vaughn DJ, Arning M, Curiel RE, Obasaju CK, Wang Y, Nicol SJ, Kaufman DS.
    Journal: J Clin Oncol; 2006 Jul 20; 24(21):3451-7. PubMed ID: 16849761.
    Abstract:
    PURPOSE: To assess the antitumor activity and toxicity of pemetrexed as second-line chemotherapy in patients with locally advanced or metastatic transitional cell carcinoma (TCC) of the urothelium. PATIENTS AND METHODS: Eligible patients had a performance status of 0 or 1, adequate organ function, previous treatment with one prior chemotherapy regimen for locally advanced or metastatic TCC of the urothelium or relapsed within 1 year of adjuvant or neoadjuvant treatment. Patients received pemetrexed 500 mg/m2 intravenously on day 1 every 21 days, with vitamin B12, folic acid, and dexamethasone prophylaxis. RESULTS: Forty-seven patients were enrolled and included in the intent-to-treat efficacy analysis. Responses: 3 (6.4%) complete responses and 10 (21.3%) partial responses produced an overall response rate of 27.7%. Ten patients (21.3%) had stable disease and 22 patients (46.8%) progressed. The median time to progressive disease was 2.9 months (95% CI, 1.7 months to 4.6 months) and median overall survival was 9.6 months (95% CI, 5.1 months to 14.6 months). Median duration of response was 5.0 months (95% CI, 3.9 months to 13.8 months). Of the 47 patients assessable for safety, grade 3 or 4 hematologic events were thrombocytopenia (8.5%; 0.0%), neutropenia (4.3%; 4.3%) and anemia (2.1%; 2.1%), respectively. Nonlaboratory toxicities included grade 4 stomatitis/pharyngitis, sepsis syndrome (one patient each), and grade 3 fatigue (three patients) and diarrhea (two patients). CONCLUSION: Single-agent pemetrexed is safe and active as second-line treatment of patients with advanced TCC of the urothelium. Additional evaluation in the first- or second-line setting in TCC of the urothelium is warranted.
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