Dataset Information

Screening logs from a pilot randomized controlled trial of radical cystectomy versus chemoradiation therapy for muscle-invasive bladder cancer.

ABSTRACT:

Introduction and objectives

There is growing interest in a bladder preservation approach using chemoradiation therapy with transurethral resection of bladder tumor (TURBT), i.e., combined modality treatment (CMT), for muscle-invasive bladder cancer (MIBC). We have initiated a pilot study to determine feasibility of conducting a larger-scale clinical trial comparing CMT to radical cystectomy (RC) in patients with MIBC. Here we present the screening logs from the recruitment phase of this trial.

Methods

Patients who were diagnosed to have MIBC after TURBT between April 2016 and August 2017 and considered to be candidates for surgery were enrolled in this prospective, single center, randomized controlled pilot feasibility trial and scheduled to undergo RC (with neoadjuvant chemotherapy if appropriate) or CMT.

Results

Of 62 patients screened during the recruitment phase, only 5 were found to be suitable candidates for either treatment modality hence eligible for randomization. The reasons for exclusion were as follows: multifocal disease (n?=?24, 40%), variant histology (n?=?15, 25%), previous pelvic radiation (n?=?6, 10%), severe lower urinary tract symptoms (n?=?5, 8.3%), unwillingness to be enrolled (n?=?8, 13.3%), and receipt of neoadjuvant chemotherapy (n?=?2, 3.3%). One of the 5 eligible patients was randomized to CMT but was subsequently switched to RC because of a high tumor burden, 1 was randomized to RC, 2 were randomized to CMT but subsequently underwent TURBT and were considered ineligible because of extensive bladder disease, and 1 elected to undergo RC.

Conclusions

We identified many patients with MIBC over a period of 16 months. However, the number of patients eligible to receive chemotherapy and in whom cystectomy and radiation therapy were both valid options was not as high as previously reported in retrospective CMT series. Many patients were excluded after TURBT. Our preliminary data indicate that only a very small subset of patients with MIBC are ideal candidates for CMT. Further research is required to identify patients who are suitable for CMT.

SUBMITTER: Kaushik D

PROVIDER: S-EPMC7003712 | biostudies-literature | 2020 Jan

REPOSITORIES: biostudies-literature

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Screening logs from a pilot randomized controlled trial of radical cystectomy versus chemoradiation therapy for muscle-invasive bladder cancer.

Kaushik Dharam D Shi Zheng Z Liss Michael A MA Wang Hanzhang H Jha Richa Priya RP Choi Byeong Yeob BY Pruthi Deepak K DK Ha Chul S CS Mansour Ahmed M AM Svatek Robert S RS

Urologic oncology 20191029 1

<h4>Introduction and objectives</h4>There is growing interest in a bladder preservation approach using chemoradiation therapy with transurethral resection of bladder tumor (TURBT), i.e., combined modality treatment (CMT), for muscle-invasive bladder cancer (MIBC). We have initiated a pilot study to determine feasibility of conducting a larger-scale clinical trial comparing CMT to radical cystectomy (RC) in patients with MIBC. Here we present the screening logs from the recruitment phase of this ...[more]

PMID: 31676280

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Project description:BackgroundMuscle-invasive bladder cancer (MIBC) remains undertreated despite multiple potentially curative options. Both radical cystectomy (RC) with or without neoadjuvant chemotherapy and trimodal therapy (TMT), including transurethral resection of bladder tumor followed by chemoradiotherapy, are standard treatments.ObjectiveTo evaluate real-world clinical outcomes of RC with neoadjuvant chemotherapy (RC-NAC), RC without NAC, TMT with National Comprehensive Cancer Network guideline-preferred radiosensitizing chemotherapy including cisplatin or mitomycin-C and 5-fluorouracil (pTMT), and TMT with nonpreferred chemotherapy (npTMT).Design setting and participantsUS veterans with nonmetastatic MIBC (T2-4aN0-3M0) were studied.Outcome measurements and statistical analysisOverall mortality (OM) was evaluated with multivariable Cox proportional hazard model. Bladder cancer-specific mortality (BCSM) was evaluated with multivariable Fine-Gray regression. Salvage cystectomy rates were obtained by chart review.Results and limitationsOverall 2306 patients were included: 1472 (64%) with RC without NAC, 506 (22%) with RC-NAC, 163 (7%) with pTMT, and 165 (7%) with npTMT. On multivariable analysis, pTMT was associated with similar OM (hazard ratio [HR] 1.19; 95% confidence interval [CI] 0.94-1.50; p = 0.15) and BCSM (HR 1.34; 95% CI 0.99-1.83; p = 0.06) to RC-NAC; npTMT was associated with worse OM (HR 1.30; 95% CI 1.04-1.61; p = 0.02) and BCSM (HR 1.45; 95% CI 1.09-1.94; p = 0.01). RC without NAC was associated with similar OM (HR 1.08; 95% CI 0.95-1.24; p = 0.24) and BCSM (HR 1.02; 95% CI 0.86-1.21; p = 0.79). When stratified by age, among patients ≥65 yr of age, treatment with pTMT was associated with similar OM (HR 1.14; 95% CI 0.87-1.50; p = 0.35) and BCSM (HR 1.11; 95% CI 0.76-1.62; p = 0.60). Among patients <65 yr of age, pTMT was associated with worse OM (HR 1.82; 95% CI 1.14-2.91; p = 0.01) and BCSM (HR 2.51; 95% CI 1.52-4.13; p < 0.01). The 5-yr cumulative incidence of salvage cystectomy in the TMT group was 3.6%.ConclusionsIn MIBC, patients receiving pTMT have comparable survival in RC-NAC patients ≥65 yr and inferior survival in RC-NAC patients <65 yr. Salvage cystectomy rates were low.Patient summaryManagement of muscle-invasive bladder cancer is a multidisciplinary effort requiring thoughtful discussions with patients about treatment options, including trimodal therapy, which is an effective treatment option.

Project description:BackgroundNeo-adjuvant chemotherapy followed by radical cystectomy with extended pelvic lymph node dissection is considered to be the treatment of choice for patients with muscle invasive bladder cancer (MIBC). Despite this aggressive treatment the outcome is poor and ultimately, 30% of the patients with ≥pT3 tumors develop a pelvic recurrence. We hypothesize that postoperative adjuvant external beam radiotherapy (EBRT) might prevent local and lymph node recurrence and improve disease free- and overall survival as loco-regional recurrence is linked to the development of distant metastasis.MethodsWe plan to perform a multicentric prospective phase two study including 76 patients. Eligible patients are patients with MIBC, treated with radical cystectomy and presenting with ≥1 of the following characteristics: Pathological (p)T3 stage + presence of lymphovascular invasion on pathological examination pT4 stage <10 lymph nodes removed positive lymph nodes positive surgical margins Patients will have a 18F-FDG PET-CT to rule out the presence of distant metastasis prior to EBRT. A median dose of 50 Gy in 25 fractions is prescribed to the pelvic lymph node regions with inclusion of the operative bladder bed in case of a positive surgical margin. Patients with suspected lymph nodes on PET- CT can still be included in the trial, but a simultaneous integrated boost to 74Gy to the positive lymph nodes will be delivered. Blood and urine samples will be collected on day-1 and last day of EBRT for evaluation of biomarkers. The primary endpoint is evaluation of acute ≥Grade 3 intestinal or grade 4 urinary toxicity, in case of a neo-bladder reconstruction, within 12 weeks after EBRT. Secondary endpoints are: assessment of QOL, late RTOG toxicity, local control, disease free survival and overall survival. Biomarkers in urine and blood will be correlated with secondary survival endpoints.DiscussionThis is a prospective phase 2 trial re-assessing the feasibility of adjuvant radiotherapy in high-risk MIBC.Trial registrationThe Ethics committee of the Ghent University Hospital (EC2014/0630) approved this study on 31/07/2014. Trial registration on Clinicaltrials.gov ( NCT02397434 ) on November 19, 2014.

Project description:BackgroundLittle is known about the outcomes of robot-assisted radical cystectomy (RARC) compared to open radical cystectomy (ORC) combined with perioperative chemotherapy for muscle-invasive urothelial bladder cancer (UBC).ObjectiveTo evaluate surgical and oncological outcomes for RARC and ORC in multimodal treatment.Design, setting, and participantsData from 28 centres were collected for cystectomies performed between January 2000 and July 2013.InterventionRARC or ORC combined with perioperative chemotherapy for UBC.Outcome measures and statistical analysisFisher's exact tests, χ2 tests, and Wilcoxon rank-sum tests were used to compare the RARC and ORC groups. Logistic and Cox regression analyses were performed to evaluate potential prognostic factors.Results and limitationsA total of 688 patients (n=603 ORC and n=85 RARC) were analysed; 60.6% received neoadjuvant chemotherapy, and 45.1% adjuvant chemotherapy. No significant differences in baseline characteristics were found between the groups. The median time from surgery to adjuvant chemotherapy was 1.9 mo for both RARC and ORC groups. The median number of lymph nodes removed was 21 (interquartile range [IQR] 14-35) for RARC and 13 (IQR 8-21) for ORC (p<0.001); the results were confirmed in subgroup analyses. Multivariable analyses revealed no difference in the rate of positive surgical margins (p=0.54 and p=0.78), rate of neobladder diversion (p=0.33 and p=0.51), relapse-free survival (p=0.31 and p=0.23), and overall survival (p=0.63 and p=0.69). The retrospective nature of the data is the major limitation.ConclusionsIn this study, no differences in efficacy outcomes or ability to deliver adjuvant chemotherapy were observed between RARC and ORC. The increasing use of RARC is justifiable from an oncological viewpoint.Patient summaryIn a retrospective study of patients who received perioperative chemotherapy for urothelial bladder cancer, we found no difference in key outcomes between robot-assisted radical cystectomy (RARC) and open radical cystectomy. Performing RARC seems to be justifiable in the multidisciplinary setting.

Dataset Information

Screening logs from a pilot randomized controlled trial of radical cystectomy versus chemoradiation therapy for muscle-invasive bladder cancer.

Introduction and objectives

Methods

Results

Conclusions

Publications

Screening logs from a pilot randomized controlled trial of radical cystectomy versus chemoradiation therapy for muscle-invasive bladder cancer.

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