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Oncogenic role of fibroblast growth factor receptor 3 in tumorigenesis of urinary bladder cancer.

Abstract
Bladder cancer is the second most common genitourinary tumor and constitutes a very heterogeneous disease. Molecular and pathologic studies suggest that low-grade noninvasive and high-grade invasive urothelial cell carcinoma (UCC) arise via distinct pathways. Low-grade noninvasive UCC represent the majority of tumors at presentation. A high proportion of patients with low-grade UCC develop recurrences but usually with no progression to invasive disease. At presentation, a majority of the bladder tumors (70%-80%) are low-grade noninvasive (pTa). Several genetic changes may occur in bladder cancer, but activating mutations in the fibroblast growth factor receptor 3 (FGFR3) genes are the most common and most specific genetic abnormality in bladder cancer. Interestingly, these mutations are associated with bladder tumors of low stage and grade, which makes the FGFR3 mutation the first marker that can be used for diagnosis of noninvasive bladder tumors. Since the first report of FGFR3 involvement in bladder tumors, numerous studies have been conducted to understand its function and thereby confirm the oncogenic role of this receptor particularly in noninvasive groups. Efforts are on to exploit this receptor as a therapeutic target, which holds much promise in the treatment of bladder cancer, particularly low-grade noninvasive tumors. Further studies need to explore the potential use of FGFR3 mutations in bladder cancer diagnosis, prognosis, and in surveillance of patients with bladder cancer. This review focuses on the role of FGFR3 in bladder tumors in the backdrop of various studies published.
AuthorsArshad A Pandith, Zafar A Shah, Mushtaq A Siddiqi
JournalUrologic oncology (Urol Oncol) Vol. 31 Issue 4 Pg. 398-406 (May 2013) ISSN: 1873-2496 [Electronic] United States
PMID20822928 (Publication Type: Journal Article, Review)
CopyrightCopyright © 2013 Elsevier Inc. All rights reserved.
Chemical References
  • Receptor, Fibroblast Growth Factor, Type 3
Topics
  • Cell Transformation, Neoplastic (genetics, pathology)
  • Humans
  • Oncogenes
  • Receptor, Fibroblast Growth Factor, Type 3 (genetics, metabolism)
  • Urinary Bladder Neoplasms (etiology, pathology)

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