| Literature DB >> 33006377 |
Thomas van Doeveren1, Jose A Nakauma-Gonzalez1,2,3, Andrew S Mason4,5, Geert J L H van Leenders6, Tahlita C M Zuiverloon1, Ellen C Zwarthoff6, Isabelle C Meijssen6, Angelique C van der Made6, Antoine G van der Heijden7, Kees Hendricksen8, Bas W G van Rhijn8,9, Charlotte S Voskuilen8, Job van Riet1,3, Winand N M Dinjens6, Hendrikus J Dubbink6, Harmen J G van de Werken1,3, Joost L Boormans1.
Abstract
The risk of developing urothelial carcinoma of the bladder (UCB) in patients treated by radical nephroureterectomy (RNU) for an upper urinary tract urothelial carcinoma (UTUC) is 22% to 47% in the 2 years after surgery. Subject of debate remains whether UTUC and the subsequent UCB are clonally related or represent separate origins. To investigate the clonal relationship between both entities, we performed targeted DNA sequencing of a panel of 41 genes on matched normal and tumor tissue of 15 primary UTUC patients treated by RNU who later developed 19 UCBs. Based on the detected tumor-specific DNA aberrations, the paired UTUC and UCB(s) of 11 patients (73.3%) showed a clonal relation, whereas in four patients the molecular results did not indicate a clear clonal relationship. Our results support the hypothesis that UCBs following a primary surgically resected UTUC are predominantly clonally derived recurrences and not separate entities.Entities:
Keywords: bladder carcinoma; clonality; upper urinary tract carcinoma; urothelial carcinoma
Mesh:
Year: 2020 PMID: 33006377 PMCID: PMC7821318 DOI: 10.1002/ijc.33327
Source DB: PubMed Journal: Int J Cancer ISSN: 0020-7136 Impact factor: 7.396