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Cancer Res. 2003 Dec 1;63(23):8108-12.

FGFR3 and TP53 gene mutations define two distinct pathways in urothelial cell carcinoma of the bladder.

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  • 1Equipe mixte Inserm Institut National de la Santé et de la Recherche Médicale, and Service d'Urologie, Paris, France.

Abstract

FGFR3 and TP53 mutations are frequent in superficial papillary and invasive disease, respectively. We used denaturing high-performance liquid chromatography and sequencing to screen for FGFR3 and TP53 mutations in 81 newly diagnosed urothelial cell carcinomas. Tumors were classified as follows: 31 pTa, 1 carcinoma in situ, 30 pT1, and 19 pT2-T4. Tumor grades were as follows: 10 G1, 29 G2, and 42 G3. FGFR3 mutations were associated with low-stage (P < 0.0001), low-grade (P < 0.008) tumors, whereas TP53 mutations were associated with high-stage (P < 0.003), high-grade (P < 0.02) tumors. Mutations in these two genes were almost mutually exclusive. Our results suggest that FGFR3 and TP53 mutations define separate pathways at initial diagnosis of urothelial cell carcinoma.

PMID:
14678961
[PubMed - indexed for MEDLINE]
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