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  • Title: Insignificant role of bacillus Calmette-Guérin maintenance therapy after complete transurethral resection of bladder tumor for intermediate- and high-risk non-muscle-invasive bladder cancer: Results from a randomized trial.
    Author: Nakai Y, Anai S, Tanaka N, Chihara Y, Haramoto M, Otani T, Nakagawa Y, Hirao Y, Konishi N, Fujimoto K.
    Journal: Int J Urol; 2016 Oct; 23(10):854-860. PubMed ID: 27416975.
    Abstract:
    OBJECTIVES: To investigate the effect of bacillus Calmette-Guérin maintenance therapy on patients with intermediate- and high-risk non-muscle-invasive bladder cancer receiving aggressive complete transurethral resection of bladder tumors standardized by well-trained surgeons. METHODS: A total of 95 patients were prospectively enrolled. Patients were diagnosed with multiple or recurrent non-muscle-invasive bladder cancer (Ta and T1), or with carcinoma in situ after complete transurethral resection of bladder tumors. Patients with Ta or T1 tumors without carcinoma in situ received six bacillus Calmette-Guérin instillations as induction therapy. Those with carcinoma in situ underwent eight bacillus Calmette-Guérin instillations as induction therapy. The patients were randomized into maintenance and non-maintenance groups. The maintenance group received intravesical bacillus Calmette-Guérin instillations once a week for 3 weeks at 3, 6, 12 and 18 months after bacillus Calmette-Guérin instillation. The primary end-point was recurrence-free survival. RESULTS: A total of 88 patients were evaluated. The average follow-up period was 48.3 ± 19.0 months. Five-year recurrence-free survival rates for the maintenance and non-maintenance groups were 80.1% and 79.3%, respectively. Five-year progression-free survival rates of the maintenance and non-maintenance groups were 92.4% and 85.3%, respectively. Recurrence- and progression-free survival rates did not significantly increase in the maintenance group compared with that in the non-maintenance group. CONCLUSIONS: Bacillus Calmette-Guérin maintenance therapy did not improve recurrence- and progression-free survival rates after the initial complete transurethral resection of bladder tumors compared with that after bacillus Calmette-Guérin induction therapy alone.
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