Fibroblast growth factor receptor 3 (FGFR3) aberrations in muscle-invasive urothelial carcinoma
- Authors
- Kim, Young Saing; Kim, Kyung; Kwon, Ghee-Young; Lee, Su Jin; Park, Se Hoon
- Issue Date
- 31-Jul-2018
- Publisher
- BMC
- Keywords
- Urothelial carcinoma; FGFR; Mutation; Fusion
- Citation
- BMC UROLOGY, v.18
- Journal Title
- BMC UROLOGY
- Volume
- 18
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/3556
- DOI
- 10.1186/s12894-018-0380-1
- ISSN
- 1471-2490
- Abstract
- Background: Recent studies suggest that FGFR3 is a potential therapeutic target in urothelial carcinoma (UC). The purpose of this study was to evaluate the rates and types of FGFR3 aberrations in patients with muscle-invasive UC who received radical resection. Methods: We analyzed surgical tumor samples from 74 UC patients who had received radical cystectomy (n = 40) or ureteronephrectomy (n = 34). Ion AmpliSeq Cancer Hotspot Panel v2 and nCounter Copy Number Variation Assay were used to detect FGFR3 aberrations. Results: Fifty-four patients (73%) had high-grade tumors, and 62% had lymph node involvement. Sixteen patients (22%) harbored FGFR3 alterations, the most common of which was FGFR3 mutations (n = 13): Y373C (n = 3), N532D (n = 3), R248C (n = 2), S249C (n = 1), G370C (n = 1), S657S (n = 1), A797P (n = 1), and 746_747InsG (n = 1). Three additional patients had a FGFR3-TACC3 rearrangement. The frequency of FGFR3 aberrations was higher in bladder UC (25%) than in UC of the renal pelvis and ureter (18%) but the difference was not statistically significant (P = 0.444). Genes that were co-aberrant with FGFR3 included APC (88%), PDGFRA (81%), RET (69%), and TP53 (69%). Conclusions: We report the frequency and types of FGFR3 aberrations in Korean patients with UC. Patients with FGFR3 mutations or FGFR3-TACC3 fusion may constitute potential candidates for a novel FGFR-targeted therapy in the perioperative setting.
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