1. Neoadjuvant Chemotherapy Prior to Radical Cystectomy for Muscle-Invasive Bladder Cancer With Variant Histology: A Systematic Review and Meta-Analysis of Survival Outcomes and Pathological Features.
- Author
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Kim DK, Kim JH, Park JY, Gwon YN, Kim KM, Yang WJ, Doo SW, and Song YS
- Subjects
- Humans, Chemotherapy, Adjuvant methods, Carcinoma, Transitional Cell mortality, Carcinoma, Transitional Cell surgery, Carcinoma, Transitional Cell drug therapy, Carcinoma, Transitional Cell pathology, Carcinoma, Transitional Cell therapy, Neoplasm Invasiveness, Treatment Outcome, Survival Analysis, Urinary Bladder Neoplasms pathology, Urinary Bladder Neoplasms surgery, Urinary Bladder Neoplasms mortality, Urinary Bladder Neoplasms drug therapy, Cystectomy, Neoadjuvant Therapy methods
- Abstract
Purpose: To conduct systematic review and meta-analysis to evaluate effects of neoadjuvant chemotherapy (NAC) on survival and histopathological outcomes of variant histology (VH) of urothelial carcinoma (UC) of bladder., Methods: This systematic review was registered in PROSPERO (CRD42023389115). Literature search was conducted in PubMed/Medline, Embase, and Cochrane Library for studies published up to January 2023. Population, intervention, comparator, outcome, and study design were as follows: bladder cancer patients with VH (population), neoadjuvant chemotherapy (intervention), radical cystectomy only (comparators), oncological survival and pathologic response (outcomes), and retrospective or prospective (study design)., Results: Finally, a total of 17 studies were included in the present study (quantitative analysis, n = 17; qualitative analysis, n = 12). Pooled HR was 0.49 (95% CI: 0.31-0.76; P = .002) for OS. Pooled HR was 0.61 (95% CI: 0.38-0.98; P = .04) for CSS. Pooled HR was 0.44 (95% CI: 0.21-0.93; P = .03) in PFS. Pooled OR was 6.61 (95% CI: 4.50-9.73; P < .00001) in complete pathologic response. Pooled OR was 9.59 (95% CI: 3.56-25.85; P < .00001) in any pathologic response. Evidence quality assessments for each 5 comparisons using the GRADE approach were that Certainty was moderate in 1, low in 1, and very low in 3., Conclusions: Administration of NAC before surgery in bladder cancer patients with VH might confer better survival outcomes and higher pathologic down staging rate than no administration of NAC before surgery., Competing Interests: Disclosure The authors report no conflicts of interest in relation to this work., (Copyright © 2023. Published by Elsevier Inc.)
- Published
- 2024
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