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Janisch F, Kienapfel C, Fühner C, Klotzbücher T, Marks P, Hillemacher T, Meyer CP, Iwata T, Parizi MK, Sauter G, Fisch M, Shariat SF, Dahlem R, Rink M. Treatment and Outcome of Metastatic Renal Cell Carcinoma With Sarcomatoid Differentiation: A Single-Center, Real-World Analysis of Retrospective Data. Front Surg 2021; 8:763271. [PMID: 34869564 PMCID: PMC8636828 DOI: 10.3389/fsurg.2021.763271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Accepted: 10/13/2021] [Indexed: 11/17/2022] Open
Abstract
Background: Sarcomatoid differentiation/histology of renal cell carcinoma (sRCC) in patients with metastatic renal cell carcinoma (mRCC) is still underresearched in current therapy regimes. We aimed to evaluate the impact of sRCC on outcomes in patients with mRCC treated with tyrosine kinase inhibitors (TKIs). Methods: We collected complete data of 262 consecutive mRCC patients from our institutional database for this retrospective study. All patients were treated with TKIs within a single or multimodal treatment approach. All analyses were adjusted for the presence of sRCC. Descriptive statistics as well as uni- and multivariable outcome metrics, including progression-free (PFS) and overall survival (OS) as endpoints were performed. Results: Overall, 18 patients had sRCC (6.9%). Patients with sRCC had more often clear-cell histology (p = 0.047), a higher T-stage (p = 0.048), and underwent cytoreductive nephrectomy more frequently (p < 0.001). The most common first-line TKIs were Sunitinib (65.6%), Sorafenib (19.5%), and Pazopanib (10.3%), respectively. At a median follow-up of 32 months, patients with sRCC had significantly reduced PFS (p = 0.02) and OS (p = 0.01) compared to patients without sRCC. In multivariable analyses that adjusted for the effects of standard mRCC predictors, the sarcomatoid feature retained its independent association with inferior PFS (HR: 2.39; p = 0.007) and OS (HR: 2.37; p = 0.001). This association remained statistically significant in subgroup analyses of patients with Sunitinib as first-line therapy (PFS p < 0.001; OS: p < 0.001). Conclusion: Despite its rare occurrence, our findings confirm sRCC as a powerful predictor for inferior outcomes in mRCC treated with targeted therapies. This suggests a need for more tailored treatment strategies in patients harboring mRCC with sarcomatoid histology to improve oncological outcomes.
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Affiliation(s)
- Florian Janisch
- Department of Urology, Medical University of Hamburg, Hamburg, Germany.,Department of Urology, Medical University of Vienna, Vienna, Austria
| | | | - Constantin Fühner
- Department of Urology, Medical University of Hamburg, Hamburg, Germany
| | | | - Phillip Marks
- Department of Urology, Medical University of Hamburg, Hamburg, Germany
| | | | - Christian P Meyer
- Department of Urology, Medical University of Hamburg, Hamburg, Germany
| | - Takehiro Iwata
- Department of Urology, Medical University of Vienna, Vienna, Austria.,Department of Urology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Mehdi Kardoust Parizi
- Department of Urology, Medical University of Vienna, Vienna, Austria.,Department of Urology, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Guido Sauter
- Department of Pathology, Medical University of Hamburg, Hamburg, Germany
| | - Margit Fisch
- Department of Urology, Medical University of Hamburg, Hamburg, Germany
| | - Shahrokh F Shariat
- Department of Urology, Medical University of Vienna, Vienna, Austria.,Institute for Urology and Reproductive Health, Sechenov University, Moscow, Russia.,Department of Urology, Weill Cornell Medical School, New York, NY, United States.,Department of Urology, University of Texas Southwestern Medical Center, Dallas, TX, United States.,Department of Urology and Andrology, Karl Landsteiner Institute of Urology and Andrology, Vienna, Austria.,Department of Urology, Second Faculty of Medicine, Charles University, Prague, Czechia
| | - Roland Dahlem
- Department of Urology, Medical University of Hamburg, Hamburg, Germany
| | - Michael Rink
- Department of Urology, Medical University of Hamburg, Hamburg, Germany
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