Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

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Dalbagni, G. et al.

Dalbagni, Russo, Sheinfeld, Mazumdar, Tong, Rabbani, Donat, Herr, Sogani, dePalma, Bajorin,

Phase I trial of intravesical gemcitabine in bacillus Calmette-GuÃ©rin-refractory transitional-cell carcinoma of the bladder.

PURPOSE: The aim of this phase I study was to determine the safety and toxicity profile of gemcitabine administered as an intravesical agent in patients with transitional-cell carcinoma (TCC) of the bladder. PATIENTS AND METHODS: Patients with superficial bladder cancer refractory to intravesical bacillus Calmette-GuÃ©rin (BCG) therapy and refusing a cystectomy were considered eligible for the trial. Gemcitabine was given in the bladder for 1 hour twice weekly in 100 mL sodium chloride for a total of six treatments. After a 1-week break, a second course of six treatments over 3 weeks was given, followed by response assessment. Four dose levels were explored: 500 mg, 1,000 mg, 1,500 mg, and 2,000 mg. RESULTS: Eighteen patients completed therapy: three at 500 mg, six at 1,000 mg, three at 1,500 mg, and six at 2,000 mg. No grade 3 or 4 toxicity was observed at 500 mg. At 1,000 mg, three patients developed hematuria and one had a skin reaction resembling grade 3 hand-foot syndrome. Three patients at 1,500 mg had no grade 3 or 4 toxicity. Of six patients at 2,000 mg, one had grade 3 thrombocytopenia and neutropenia without infection. Seven patients had a complete response (negative cytology and posttreatment biopsy), and four patients had a mixed response (negative bladder biopsy but positive cytology). CONCLUSION: Gemcitabine has substantial activity as an intravesical agent in BCG-refractory TCC and warrants further investigation. Therapy given twice weekly was associated with minimal bladder irritation and tolerable myelosuppression. The recommended phase II dose for twice-weekly therapy is 2,000 mg.[1]

References

Phase I trial of intravesical gemcitabine in bacillus Calmette-Guérin-refractory transitional-cell carcinoma of the bladder. Dalbagni, G., Russo, P., Sheinfeld, J., Mazumdar, M., Tong, W., Rabbani, F., Donat, M.S., Herr, H.W., Sogani, P., dePalma, D., Bajorin, D. J. Clin. Oncol. (2002) [Pubmed]

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