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  • Title: "Real-world" outcomes and prognostic indicators among patients with high-risk muscle-invasive urothelial carcinoma.
    Author: Drakaki A, Pantuck A, Mhatre SK, Dhillon PK, Davarpanah N, Degaonkar V, Surinach A, Chamie K, Grivas P.
    Journal: Urol Oncol; 2021 Jan; 39(1):76.e15-76.e22. PubMed ID: 32778476.
    Abstract:
    INTRODUCTION: There is no current standard of care for patients with high-risk muscle-invasive urothelial carcinoma (MIUC) after neoadjuvant chemotherapy and surgical resection or for those who cannot receive or decline cisplatin-based perioperative chemotherapy. Understanding current, real-world treatment patterns may help inform decisions from clinical, research, and population health management perspectives. We examined real-world treatment patterns, survival outcomes, and prognostic factors among Medicare beneficiaries with high-risk MIUC who did not receive adjuvant treatment after surgical resection. METHODS: We identified patients with high-risk MIUC in the linked Surveillance, Epidemiology, and End Results (SEER)-Medicare database who underwent surgical resection (radical cystectomy and/or radical nephroureterectomy). Eligible patients had indicators of high-risk MIUC and surgical resection between 2001 and 2013. Demographic and clinical characteristics, including comorbidities, American Joint Commission on Cancer (AJCC) stage, tumor stage/grade and nodal status, and distribution of neoadjuvant treatment by the year of surgical resection were evaluated. Overall survival (OS) and disease-free survival (DFS) were assessed for the full cohort and by subgroups using Kaplan-Meier survival analysis. Adjusted Cox proportional hazards models were used to evaluate patient demographics and clinical characteristics associated with OS and DFS. RESULTS: A total of 665 patients were included in the analysis, with a mean age of 75.5 years; most were men (61%) and had AJCC stage IIIA disease (69%). Neoadjuvant treatment increased over the entire study period, both overall (from 12% to 46%) and cisplatin based (from 5% to 38%). Median OS for the entire cohort was 23.1 months (95% confidence interval: 18, 27); median DFS was 13.5 months (95% confidence interval: 11.3, 16.8). AJCC stage IIIB/IVA was the most significant predictor of poor prognosis for both OS and DFS, followed by non-white race and comorbidity burden. CONCLUSION: The prognosis for high-risk patients with MIUC remains poor, with significant risk of mortality within 2 years of radical cystectomy despite increasing use of neoadjuvant treatment. Unmet treatment needs persist for this difficult-to-treat patient population despite the increasing use of cisplatin-based neoadjuvant chemotherapy.
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