PMID- 36045013 OWN - NLM STAT- MEDLINE DCOM- 20230131 LR - 20230213 IS - 1938-0682 (Electronic) IS - 1558-7673 (Linking) VI - 21 IP - 1 DP - 2023 Feb TI - Renal Sarcoma: A Population-Based Study. PG - 155-161 LID - S1558-7673(22)00167-7 [pii] LID - 10.1016/j.clgc.2022.07.012 [doi] AB - INTRODUCTION: Renal sarcomas are exceedingly rare and lack a prognostic stage classification. We thus aimed to investigate the contemporary clinicopathologic characteristics and outcomes of renal sarcomas at a national level. PATIENTS AND METHODS: We utilized the Surveillance, Epidemiology, and End Results database to extract data on patients with renal sarcoma diagnosed between 2004 and 2015. We estimated median, 1-, 3-, and 5-year overall survival (OS) probabilities via Kaplan-Meier curves and used multivariable regression to compare OS between different patient groups. RESULTS: We identified 365 patients; at diagnosis, 104 patients (28.5%) had stage I disease (T1N0M0), 133 patients (36.4%) patients had stage II disease (T2-4N0M0), and 117 patients (32.1%) patients had stage III disease (any T, N1, or M1). Median survival was 105 months (interquartile range [IQR], 29 - not reached) for stage I disease, 46 months (IQR 14-118 months) for stage II disease, 8 months (IQR 3-28 months) for stage III disease, and 32 months (IQR, 8-116 months) for the entire cohort. Patient age (hazard ratio [HR] for death [per year] 1.02, 95% confidence interval [95% CI] 1.00-1.04), stage (II vs. I: HR 1.71, 95% CI 1.00-2.92; III vs. I: HR 4.93, 95% CI 2.68-9.05), grade (grade 3 vs. grade 1: 3.07, 95% CI 1.18-8.00; grade 4 vs. grade 1: HR 3.66, 95% CI 1.41-9.49), and possessing medical insurance (HR 0.40, 95% CI 0.16-0.94) were independently and significantly associated with OS. Performance of nephrectomy also trended towards independently improving OS (HR 0.23, 95% CI 0.05-1.09). CONCLUSION: A novel staging classification for renal sarcomas into a 3-stage system based on Tumor Node Metastasis (TNM) criteria produces distinct survival curves, although further studies are needed to robustly assess its validity. CI - Copyright (c) 2022 Elsevier Inc. All rights reserved. FAU - Alevizakos, Michail AU - Alevizakos M AD - Hematology/Oncology Division, Beth Israel Deaconess Medical Center, Boston, MA. Electronic address: mich.alevizakos@gmail.com. FAU - Gaitanidis, Apostolos AU - Gaitanidis A AD - Department of Surgery, Eastern Virginia Medical School, Norfolk, VA. FAU - Korentzelos, Dimitrios AU - Korentzelos D AD - Department of Pathology, University of Pittsburgh Medical Center, Pittsburgh, PA. FAU - Basourakos, Spyridon P AU - Basourakos SP AD - Department of Urology, New York Presbyterian Hospital/Weill Cornell Medical Center, New York, NY. FAU - Burgess, Melissa AU - Burgess M AD - Division of Hematology/Oncology, University of Pittsburgh, Pittsburgh, PA. LA - eng PT - Journal Article DEP - 20220730 PL - United States TA - Clin Genitourin Cancer JT - Clinical genitourinary cancer JID - 101260955 SB - IM MH - Humans MH - Neoplasm Staging MH - Retrospective Studies MH - *Kidney Neoplasms/epidemiology/surgery MH - Prognosis MH - *Sarcoma/epidemiology/therapy MH - SEER Program OTO - NOTNLM OT - Epidemiology OT - Renal OT - SEER OT - Sarcoma OT - Staging EDAT- 2022/09/01 06:00 MHDA- 2023/02/01 06:00 CRDT- 2022/08/31 22:02 PHST- 2021/11/11 00:00 [received] PHST- 2022/07/22 00:00 [revised] PHST- 2022/07/26 00:00 [accepted] PHST- 2022/09/01 06:00 [pubmed] PHST- 2023/02/01 06:00 [medline] PHST- 2022/08/31 22:02 [entrez] AID - S1558-7673(22)00167-7 [pii] AID - 10.1016/j.clgc.2022.07.012 [doi] PST - ppublish SO - Clin Genitourin Cancer. 2023 Feb;21(1):155-161. doi: 10.1016/j.clgc.2022.07.012. Epub 2022 Jul 30.