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Objective: To assess the role of neoadjuvant chemotherapy (NAC) before robot-assisted radical cystectomy (RARC) for patients with variant histology (VH) muscle-invasive bladder cancer (MIBC)., Methods: Retrospective review of 988 patients who underwent RARC (2004-2023) for MIBC. Primary outcomes included the utilization of NAC among this cohort of patients, frequency of downstaging, and discordance between preoperative and final pathology in terms of the presence of VH. Secondary outcomes included disease-specific (DSS), recurrence-free (RFS), and overall survival (OS)., Results: A total of 349 (35%) had VH on transurethral resection or at RARC. The 4 most common VH subgroups were squamous (n = 94), adenocarcinoma (n = 64), micropapillary (n = 34), and sarcomatoid (n = 21). There was no difference in OS (log-rank: P = 0.43 for adenocarcinoma, P = 0.12 for micropapillary, P = 0.55 for sarcomatoid, P = 0.29 for squamous), RFS (log-rank: P = 0.25 for adenocarcinoma, P = 0.35 for micropapillary, P = 0.83 for sarcomatoid, P = 0.79 for squamous), or DSS (log-rank P = 0.91 for adenocarcinoma, P = 0.15 for micropapillary, 0.28 for sarcomatoid, P = 0.92 for squamous) among any of the VH based on receipt of NAC. Patients with squamous histology who received NAC were more likely to be downstaged on final pathology compared to those who did not (P < 0.01)., Conclusion: Our data showed no significant difference in OS, RFS, or DSS for patients with VH MIBC cancer who received NAC before RARC. Patients with the squamous variant who received NAC had more pathologic downstaging compared to those who did not. The role of NAC among patients with VH is yet to be defined. Results were limited by small number in each individual group and lack of exact proportion of VH., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024. Published by Elsevier Inc.)

Objective: To identify trends in complications following robot-assisted radical cystectomy (RARC) using a multi-institutional database, the International Robotic Cystectomy Consortium (IRCC)., Methods: A retrospective review of the IRCC database was performed (2976 patients, 26 institutions from 11 countries). Postoperative complications were categorized as overall or high grade (≥ Clavien Dindo III) and were further categorized based on type/organ site. Descriptive statistics was used to summarize the data. Multivariate analysis (MVA) was used to identify variables associated with overall and high-grade complications.  Cochran-Armitage trend test was used to describe the trend of complications over time., Results: 1777 (60%) patients developed postoperative complications following RARC, 51% of complications occurred within 30 days of RARC, 19% between 30-90 days, and 30% after 90 days. 835 patients (28%) experienced high-grade complications. Infectious complications (25%) were the most prevalent, while bleeding (1%) was the least. The incidence of complications was stable between 2002-2021. Gastrointestinal and neurologic postoperative complications increased significantly (P < .01, for both) between 2005 and 2020 while thromboembolic (P = .03) and wound complications (P < .01) decreased. On MVA, BMI (OR 1.03, 95%CI 1.01-1.05, P < .01), prior abdominal surgery (OR 1.26, 95%CI 1.03-1.56, P = .03), receipt of neobladder (OR 1.52, 95%CI 1.17-1.99, P < .01), positive nodal disease (OR 1.33, 95%CI 1.05-1.70, P = .02), length of inpatient stay (OR 1.04, 95%CI 1.02-1.05, P < .01) and ICU admission (OR 1.67, 95%CI 1.36-2.06, P < .01) were associated with high-grade complications., Conclusion: Overall and high-grade complications after RARC remained stable between 2002-2021. GI and neurologic complications increased, while thromboembolic and wound complications decreased., (Published by Elsevier Inc.)

Objectives: To investigate the oncologic outcomes of pT0 after robot-assisted radical cystectomy (RARC)., Methods: A retrospective review of the International Robotic Cystectomy Consortium database was performed. Patients with pT0 after RARC were identified and analyzed. Data were reviewed for demographics and pathologic outcomes. Kaplan-Meier curves were used to depict recurrence-free survival (RFS), disease-specific survival (DSS), and overall survival (OS). Multivariate stepwise Cox regression models were used to identify variables associated with RFS and OS., Results: Four hundred seventy-one patients (18%) with pT0 were identified. Median age was 68 years (interquartile range (IQR) 60-73), with a median follow up of 20 months (IQR 6-47). Thirty-seven percent received neoadjuvant chemotherapy and 5% had pN+ disease. Seven percent of patients experienced disease relapse; 3% had local and 5% had distant recurrence. Most common sites of local and distant recurrences were pelvis (1%) and lungs (2%). Five-year RFS, DSS, and OS were 88%, 93%, and 79%, respectively. Age (hazards ratio [HR] 1.05, 95% confidence interval [CI] 1.01-1.09, P = 0.02), pN+ve (HR 11.48, 95% CI 4.47-29.49, P < .01), and reoperations within 30 days (HR 5.53, 95% CI 2.08-14.64, P < .01) were associated with RFS. Chronic kidney disease (HR 3.24, 95% CI 1.45-7.23, P < .01), neoadjuvant chemotherapy (HR 0.41, 95% CI 0.18-0.92, P = .03), pN+ve (HR 4.37, 95% CI 1.46-13.06, P < .01), and reoperations within 30 days (HR 2.64, 95% CI, 1.08-6.43, P = .03) were associated with OS., Conclusions: Despite pT0 status at RARC, 5% had pN+ disease and 7% of patients relapsed. Node status was the variable strongest associated with RFS and OS in pT0., (Copyright © 2022. Published by Elsevier Inc.)

Introduction: We sought to describe the incidence, risk factors, and survival outcomes associated with pathologic upstaging from non-muscle invasive bladder cancer (NMIBC) to muscle invasive bladder cancer (MIBC) after robot-assisted radical cystectomy (RARC). Methods: We reviewed the International Robotic Cystectomy Consortium database between 2004 and 2020. Upstaging was defined as ≥pT 2 or pathologic node positive (pN+) at final pathology analysis from clinical 2 N 0 M 0 . Descriptive statistics were used to summarize data. Cochran-Armitage test was used to depict upstaging trend over time. Multivariate regression models were used to depict variables associated with upstaging. Kaplan-Meier curves were used to describe disease-specific survival (DSS), recurrence-free survival (RFS), and overall survival (OS). Results: A total of 463 patients underwent RARC for NMIBC. Upstaging occurred in 145 (31%) patients. Upstaged patients were older (70 vs 67 years, p  < 0.01), more likely to have American Society of Anesthesiologists (ASA) score (≥3; 55% vs 44%, p  = 0.04), and had higher rate of preoperative hydronephrosis (26% vs 10%, p  < 0.01). They were more likely to have positive surgical margins (10% vs 3%, p  = 0.01), recurrences (28% vs 9%, p  < 0.01), and to receive adjuvant/salvage treatment (26% vs 3%, p  < 0.01). On multivariate analysis, upstaging was associated with older age (odds ratio [OR] 1.04; confidence interval [CI] 1.01-1.07, p  < 0.01), cT 1 vs cTis (OR 4.25; CI 1.57-11.48, p  < 0.01), cT 1 vs cTa (OR 2.92; CI 1.40-6.06, p  < 0.01), and preoperative hydronephrosis (OR 3.18; CI 1.60-6.32, p  < 0.01). Upstaged patients had worse 5-year RFS (53% vs 85%, log rank p  < 0.01), DSS (66% vs 93%, log rank p  < 0.01), and OS (49% vs 74%, log rank p  < 0.01). The rate of upstaging did not significantly change over time (38% in 2004 to 27% in 2019, p  = 0.17). Conclusion: Upstaging to MIBC occurred in a significant proportion of patients after RARC for NMIBC and was associated with worse survival outcomes. Older patients, those with cT 1 disease and hydronephrosis were more likely to upstage.