1. Combined-modality therapy with gemcitabine and radiotherapy as a bladder preservation strategy: results of a phase I trial.
- Author
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Kent E, Sandler H, Montie J, Lee C, Herman J, Esper P, Fardig J, and Smith DC
- Subjects
- Aged, Aged, 80 and over, Antimetabolites, Antineoplastic administration & dosage, Antimetabolites, Antineoplastic adverse effects, Combined Modality Therapy, Deoxycytidine administration & dosage, Deoxycytidine adverse effects, Female, Humans, Male, Maximum Tolerated Dose, Middle Aged, Urinary Bladder Neoplasms pathology, Gemcitabine, Antimetabolites, Antineoplastic therapeutic use, Deoxycytidine analogs & derivatives, Deoxycytidine therapeutic use, Neoplasm Invasiveness, Urinary Bladder Neoplasms drug therapy, Urinary Bladder Neoplasms radiotherapy
- Abstract
Purpose: We conducted a phase I trial of gemcitabine given twice weekly with concurrent radiotherapy in patients with muscle-invasive bladder cancer., Patients and Methods: Eligible patients underwent maximal transurethral resection of their bladder tumors followed by twice-weekly infusion of gemcitabine with 2 Gy/d concurrent radiotherapy to the bladder, for a total of 60 Gy over 6 weeks. The starting dose of gemcitabine was 10 mg/m(2) with subsequent dose levels of 20, 27, 30, and 33 mg/m(2). The primary end point was the determination of the maximum-tolerated dose (MTD) of twice weekly gemcitabine with concurrent radiotherapy. Secondary end points included assessment of toxicity associated with combined-modality therapy and initial assessment of the rate of bladder preservation., Results: Twenty-four patients were enrolled and 23 were assessable for toxicity and response. No significant toxicity was demonstrated at the 10 or 20 mg/m(2) twice-weekly doses. Dose-limiting toxicity (DLT) occurred in two of three patients treated at 33 mg/m(2). Intermediate dose levels of 27 and 30 mg/m(2) were then evaluated. The MTD of gemcitabine was 27 mg/m(2). The DLT was systemic, manifested as an elevation in liver function tests, malaise, and edema. Fifteen of 23 patients (65%) are alive with bladders intact and no evidence of recurrent disease at a median follow-up of 43 months., Conclusion: Twice-weekly gemcitabine with concurrent radiotherapy at 2 Gy/d to a total dose of 60 Gy is well-tolerated. The MTD of gemcitabine is 27 mg/m(2). There is a high rate of bladder preservation in this selected group of patients.
- Published
- 2004
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