PMID- 31813809 OWN - NLM STAT- MEDLINE DCOM- 20220328 LR - 20220328 IS - 2405-4569 (Electronic) IS - 2405-4569 (Linking) VI - 7 IP - 2 DP - 2021 Mar TI - Putative Drivers of Aggressiveness in TCEB1-mutant Renal Cell Carcinoma: An Emerging Entity with Variable Clinical Course. PG - 381-389 LID - S2405-4569(19)30354-2 [pii] LID - 10.1016/j.euf.2019.11.013 [doi] AB - BACKGROUND: TCEB1-mutant renal cell carcinoma (RCC) is a rare variant of RCC with clear-cell features. Owing to its unique morphological and molecular features it has recently been proposed as a separate entity. Initial series suggested an indolent, early-stage phenotype. Here we expand our clinical cohort and describe a more detailed genomic analysis looking for potential drivers of aggressiveness. DESIGN, SETTING, AND PARTICIPANTS: We identified five new cases in our institutional sequencing cohort, four of whom were found to have high-stage disease (American Joint Committee on Cancer stage III/IV). Twelve previously reported cases were pooled for comparison purposes (Sato, The Cancer Genome Atlas, TRACERx Renal). OUTCOME MEASURES AND STATISTICAL ANALYSIS: We used our previously validated pipeline to analyze somatic mutations and copy number alterations (CNAs) in seven tumor samples with available data and estimated the number of cancer cells bearing each somatic mutation. The oncogenic potential of mutations was assessed using OncoKB and two other algorithms. Mann-Whitney U tests were used to evaluate differences in genomic markers between stage groups. RESULTS AND LIMITATIONS: All tumors showed biallelic inactivation of the TCEB1 gene according to a combination of somatic mutation and CNA analyses. Mutations were always found in residues involved in hydrophobic interactions with VHL. We found that high-stage tumors had additional oncogenic mutations (median 1, interquartile range [IQR] 1-1 vs 2, IQR 2-2; median difference 1, 95% confidence interval [CI] 1-1; p= 0.002) and showed whole-genome doubling events. They also seemed to have a higher burden of somatic CNAs (median fraction CNA genome 0.10, IQR 0.10-0.15 vs 0.63, IQR 0.58-0.68), however, this finding did not reach statistical significance (median difference 0.49, 95% CI 0.33-0.63; p=0.052). CONCLUSIONS: TCEB1-mutant RCC can show variable behavior ranging from very indolent to aggressive. Specific molecular events leading to high genomic instability seem to be associated with aggressiveness. This study expands the clinical spectrum of TCEB1-mutant RCC. PATIENT SUMMARY: We present four cases of aggressive TCEB1-mutant renal cell carcinoma, a rare type of kidney cancer. In-depth analysis of the genomes of these tumors revealed certain abnormalities that might explain this aggressive behavior. CI - Copyright (c) 2019 European Association of Urology. Published by Elsevier B.V. All rights reserved. FAU - DiNatale, Renzo G AU - DiNatale RG AD - Urology Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY, USA; Immunogenomics and Precision Oncology Platform, Memorial Sloan Kettering Cancer Center, New York, NY, USA; Computational Oncology Service, Department of Epidemiology & Biostatistics, Memorial Sloan Kettering Cancer Center, New York, NY, USA. FAU - Gorelick, Alexander N AU - Gorelick AN AD - Computational Oncology Service, Department of Epidemiology & Biostatistics, Memorial Sloan Kettering Cancer Center, New York, NY, USA; Center for Molecular Oncology, Memorial Sloan Kettering Cancer Center, New York, NY, USA. FAU - Makarov, Vladimir AU - Makarov V AD - Immunogenomics and Precision Oncology Platform, Memorial Sloan Kettering Cancer Center, New York, NY, USA. FAU - Blum, Kyle A AU - Blum KA AD - Urology Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY, USA. FAU - Silagy, Andrew W AU - Silagy AW AD - Urology Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY, USA. FAU - Freeman, Benjamin AU - Freeman B AD - Urology Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY, USA. FAU - Chowell, Diego AU - Chowell D AD - Immunogenomics and Precision Oncology Platform, Memorial Sloan Kettering Cancer Center, New York, NY, USA. FAU - Marcon, Julian AU - Marcon J AD - Urology Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY, USA. FAU - Mano, Roy AU - Mano R AD - Urology Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY, USA. FAU - Sanchez, Alex AU - Sanchez A AD - Urology Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY, USA. FAU - Attalla, Kyrollis AU - Attalla K AD - Urology Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY, USA. FAU - Weng, Stanley AU - Weng S AD - Urology Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY, USA. FAU - Voss, Martin AU - Voss M AD - Genitourinary Oncology Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA. FAU - Motzer, Robert J AU - Motzer RJ AD - Genitourinary Oncology Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA. FAU - Russo, Paul AU - Russo P AD - Urology Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY, USA. FAU - Coleman, Jonathan A AU - Coleman JA AD - Urology Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY, USA. FAU - Reuter, Victor E AU - Reuter VE AD - Pathology Department, Memorial Sloan Kettering Cancer Center, New York, NY, USA. FAU - Chen, Ying-Bei AU - Chen YB AD - Pathology Department, Memorial Sloan Kettering Cancer Center, New York, NY, USA. FAU - Chan, Timothy A AU - Chan TA AD - Immunogenomics and Precision Oncology Platform, Memorial Sloan Kettering Cancer Center, New York, NY, USA. FAU - Reznik, Ed AU - Reznik E AD - Computational Oncology Service, Department of Epidemiology & Biostatistics, Memorial Sloan Kettering Cancer Center, New York, NY, USA. FAU - Tickoo, Satish K AU - Tickoo SK AD - Pathology Department, Memorial Sloan Kettering Cancer Center, New York, NY, USA. Electronic address: tickoos@mskcc.org. FAU - Hakimi, A Ari AU - Hakimi AA AD - Urology Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY, USA. Electronic address: hakimia@mskcc.org. LA - eng GR - P30 CA008748/CA/NCI NIH HHS/United States GR - T32 CA082088/CA/NCI NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20191206 PL - Netherlands TA - Eur Urol Focus JT - European urology focus JID - 101665661 RN - 0 (Biomarkers, Tumor) SB - IM MH - Biomarkers, Tumor/genetics MH - Carcinoma, Renal Cell/*genetics/pathology MH - DNA Copy Number Variations MH - Genomics MH - Humans MH - Kidney Neoplasms/*genetics/pathology MH - Sequence Analysis, DNA PMC - PMC7274909 MID - NIHMS1546117 OTO - NOTNLM OT - DNA mutational analysis OT - Genomic instability OT - Metastasis OT - Renal cell carcinoma OT - Tumor suppressor genes EDAT- 2019/12/10 06:00 MHDA- 2022/03/29 06:00 PMCR- 2022/03/01 CRDT- 2019/12/10 06:00 PHST- 2019/08/20 00:00 [received] PHST- 2019/11/06 00:00 [revised] PHST- 2019/11/19 00:00 [accepted] PHST- 2019/12/10 06:00 [pubmed] PHST- 2022/03/29 06:00 [medline] PHST- 2019/12/10 06:00 [entrez] PHST- 2022/03/01 00:00 [pmc-release] AID - S2405-4569(19)30354-2 [pii] AID - 10.1016/j.euf.2019.11.013 [doi] PST - ppublish SO - Eur Urol Focus. 2021 Mar;7(2):381-389. doi: 10.1016/j.euf.2019.11.013. Epub 2019 Dec 6.