Real-world data on utilization of neoadjuvant chemotherapy for muscle invasive bladder cancer: impact on surgical complications and oncological efficacy
Background and purpose: Recommended treatment of urothelial muscle-invasive bladder cancer (MIBC) is cisplatin-based neoadjuvant chemotherapy (NAC) followed by cystectomy, but there are challenges with low utilization of NAC. We aimed to evaluate the utilization of NAC, perioperative complications a...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Medical Journals Sweden
2025-01-01
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| Series: | Acta Oncologica |
| Subjects: | |
| Online Access: | https://medicaljournalssweden.se/actaoncologica/article/view/42052 |
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| Summary: | Background and purpose: Recommended treatment of urothelial muscle-invasive bladder cancer (MIBC) is cisplatin-based neoadjuvant chemotherapy (NAC) followed by cystectomy, but there are challenges with low utilization of NAC. We aimed to evaluate the utilization of NAC, perioperative complications and oncological efficacy in a real-world setting.
Patients and methods: All patients operated with radical cystectomy at the University Hospital of North Norway during 2011–2021 for MIBC were included. NAC consisted of three cycles of dose-dense methotrexate, vinblastine, doxorubicin and cisplatin (ddMVAC) every second week. Complications after cystectomy (Clavien-Dindo ≥ grade 3 within 30 days), histopathologic NAC response, cancer recurrence, relapse-free survival (RFS), overall survival (OS) and cause of death were reported.
Results: We included 124 patients, median observation time of 4 years. Fifty-nine patients (48%) received NAC. Most common causes for not receiving NAC were age ≥ 75 years (n = 38; 31%), cardiovascular disease (n = 7; 5.6%), and reduced kidney function (n = 6; 4.8%). Overall 34 patients (27%) had a ≥ grade 3 complication. The 5-year actuarial OS rate was higher among patients treated with NAC than those without NAC (67% vs. 45%, p = 0.02). Among NAC-treated patients, 29 (49%) were downstaged to non-muscle invasive stage (≤pT1), and the 5-year actuarial RFS and OS were higher among patients with ≤pT1 in the post-cystectomy specimen than those with ≥ pT2 (92% vs. 35%, and 94% vs. 39%, both p < 0.001).
Interpretation: The utilization of NAC was high in this real-world setting. Treatment with ddMVAC with achieved downstaging to ≤pT1 was associated with considerably improved RFS and OS.
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| ISSN: | 1651-226X |