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- Kaasinen, Eero, et al.
(författare)
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Seventeen-year follow-up of the prospective randomized Nordic CIS study: BCG monotherapy versus alternating therapy with mitomycin C and BCG in patients with carcinoma in situ of the urinary bladder
- 2016
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Ingår i: Scandinavian journal of urology. - : TAYLOR & FRANCIS LTD. - 2168-1805 .- 2168-1813. ; 50:5, s. 360-368
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Tidskriftsartikel (refereegranskat)abstract
- Objective: The aim of this study was to compare the long-term efficacy of BCG monotherapy to alternating therapy of mitomycin C (MMC) and BCG in patients with carcinoma in situ (CIS). Materials and methods: Between 1992 and 1997, 321 patients with CIS were randomized from Finland, Norway and Sweden in a prospective multicenter trial into two treatment groups. The alternating therapy comprised six weekly instillations of MMC 40 mg followed by 10 instillations of BCG (Connaught 120 mg) or MMC alternating monthly for 1 year. BCG monotherapy followed the same 6 + 10 schedule. Stratification was done by nationality and CIS category. Primary endpoints were time to first recurrence and time to progression. Secondary endpoints were disease-specific mortality and overall survival. The main statistical methods were the proportional subdistribution hazards model and Cox proportional hazards model with the cumulative incidence and Kaplan-Meier analyses. Results: The median follow-up time was 9.9 years (maximum 19.9 years) in the BCG group and 8.9 years (maximum 20.3 years) in the alternating group. The risk of recurrence was significantly lower in the BCG group than in the alternating group (49 vs 59% at 15 years, respectively; hazard ratio 0.74, 95% confidence interval 0.54-1.00, p = 0.048). There were no significant differences in the other endpoints. Patients who progressed after 2 years were particularly prone to dying from bladder carcinoma. Younger patients performed worse than older ones. Conclusions: BCG monotherapy including monthly maintenance was effective and better than the alternating therapy. The risk of dying from bladder carcinoma after progression was high.
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- Malmström, Per-Uno, et al.
(författare)
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An individual patient data meta-analysis of the long-term outcome of randomised studies comparing intravesical mitomycin C versus bacillus Calmette-Guérin for non-muscle-invasive bladder cancer
- 2009
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Ingår i: European Urology. - : Elsevier BV. - 0302-2838 .- 1873-7560. ; 56:2, s. 247-56
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Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND: Patients with non-muscle-invasive bladder cancer with an intermediate or high risk need adjuvant intravesical therapy after surgery. Based largely on meta-analyses of previously published results, guidelines recommend using either bacillus Calmette-Guérin (BCG) or mitomycin C (MMC) in these patients. Individual patient data (IPD) meta-analyses, however, are the gold standard. OBJECTIVE: To compare the efficacy of BCG and MMC based on an IPD meta-analysis of randomised trials. DESIGN, SETTING, AND PARTICIPANTS: Trials were searched through Medline and review articles. The relevant trial investigators were contacted to provide IPD. MEASUREMENTS: The drugs were compared with respect to time to recurrence, progression, and overall and cancer-specific death. RESULTS AND LIMITATIONS: Nine trials that included 2820 patients were identified, and IPD were obtained from all of them. Patient characteristics were 71% primary, 54% Ta, 43% T1, 25% G1, 58% G2, and 16% G3, and 7% had prior intravesical chemotherapy. Based on a median follow-up of 4.4 yr, 43% recurred. Overall, there was no difference in the time to first recurrence (p=0.09) between BCG and MMC. In the trials with BCG maintenance, a 32% reduction in risk of recurrence on BCG compared to MMC was found (p<0.0001), while there was a 28% risk increase (p=0.006) for BCG in the trials without maintenance. BCG with maintenance was more effective than MMC in both patients previously treated and those not previously treated with chemotherapy. In the subset of 1880 patients for whom data on progression, survival, and cause of death were available, 12% progressed and 24% died, and, of those, 30% of the deaths were due to bladder cancer. No statistically significant differences were found for these long-term end points. CONCLUSIONS: For prophylaxis of recurrence, maintenance BCG is required to demonstrate superiority to MMC. Prior intravesical chemotherapy was not a confounder. There were no statistically significant differences regarding progression, overall survival, and cancer-specific survival between the two treatments.
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- Rosenblatt, Robert, et al.
(författare)
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Pathologic Downstaging Is a Surrogate Marker for Efficacy and Increased Survival Following Neoadjuvant Chemotherapy and Radical Cystectomy for Muscle-Invasive Urothelial Bladder Cancer
- 2012
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Ingår i: European Urology. - : Elsevier. - 0302-2838 .- 1873-7560. ; 61:6, s. 1229-1238
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Tidskriftsartikel (refereegranskat)abstract
- Background: Characterising responders to neoadjuvant chemotherapy (NAC) is important to minimise overtreatment and the unnecessary delay of definitive treatment of urothelial urinary bladder cancer.Objective: To assess the effect of NAC on tumour downstaging and overall survival.Design, setting, and participants: A total of 449 patients from the randomised prospective Nordic Cystectomy Trials 1 and 2 were analysed retrospectively. Eligible patients were defined as T2–T4aNXM0 preoperatively and pT0–pT4aN0−N + M0 postoperatively. The median follow-up time was 5 yr.Intervention: The experimental arm consisted of cisplatin-based NAC; the control arm consisted of cystectomy only.Measurements: The primary outcome was tumour downstaging defined as pathologic TNM less than clinical TNM. Different downstaging thresholds were applied: complete downstaging (CD) (pT0N0), noninvasive downstaging (NID) (pT0/pTis/pTaN0), and organ confinement (OC) (≤pT3aN0). Downstaging rates and nodal status were compared between the study arms using the chi-square test. Secondary outcome was overall survival (OS) stratified by treatment arm, downstaging categories, and clinical stages, analysed by the Kaplan-Meier method. The following covariates were tested as prognostic factors in univariate and multivariate analyses using the Cox regression method: age, sex, clinical stage, pN status, NAC, CD, NID, and OC.Results and limitations: Downstaging rates increased significantly in the NAC arm independent of the downstaging threshold. The impact was more prominent in clinical T3 tumours, with a near threefold increase in CD tumours. The combination of CD and NAC showed an absolute risk reduction of 31.1% in OS at 5 yr compared with CD controls. The combination of NAC and CD revealed a hazard ratio of 0.32 compared with 1.0 for the combination of no NAC and no CD. Limitations were the retrospective approach and uncertain clinical TNM staging.Conclusions: Survival benefits of NAC are reflected in downstaging of the primary tumour. Chemo-induced downstaging might be a potential surrogate marker for OS.
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