FGFR3 expression in primary and metastatic urothelial carcinoma of the bladder.

FGFR3 expression in primary and metastatic urothelial carcinoma of the bladder.
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DOI:
10.1002/cam4.262
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发表时间:
2014-08
期刊:
影响因子:
4
通讯作者:
Rosenberg, Jonathan E.
Rosenberg, Jonathan E.
中科院分区:
医学3区
文献类型:
--
作者:
Guancial, Elizabeth A.;Werner, Lillian;Bellmunt, Joaquim;Bamias, Aristotle;Choueiri, Toni K.;Ross, Robert;Schutz, Fabio A.;Park, Rachel S.;O'Brien, Robert J.;Hirsch, Michelle S.;Barletta, Justine A.;Berman, David M.;Lis, Rosina;Loda, Massimo;Stack, Edward C.;Garraway, Levi A.;Riester, Markus;Michor, Franziska;Kantoff, Philip W.;Rosenberg, Jonathan E.

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虽然成纤维细胞生长因子受体 3 (FGFR3) 在非肌肉侵袭性尿路上皮癌 (UC) 中频繁突变或过度表达,但在肌肉侵袭性疾病中 FGFR3 蛋白表达和突变的患病率仍然未知。使用以下方法回顾性分析 231 例福尔马林固定石蜡包埋的原发性 UC、33 例转移瘤和 14 配对原发性和转移性肿瘤的 FGFR3 蛋白和 mRNA 表达、突变状态和拷贝数变异:免疫组织化学、NanoString nCounterTM、OncoMap 或 Affymetrix OncoScanTM 阵列、DNA 分析的增益和丢失以及重要靶点的基因组鉴定在癌症软件中。 FGFR3 免疫组织化学染色存在于 29% 的原发性 UC 和 49% 的转移瘤中,并且不影响总生存期(P = 0.89,原发性肿瘤;P = 0.78,转移瘤)。在 2% 的原发肿瘤和 9% 的转移瘤中观察到 FGFR3 突变。突变型肿瘤比野生型肿瘤表达更高水平的 FGFR3 mRNA (P < 0.001)。 FGFR3 拷贝数增加和丢失在原发性和转移性肿瘤中是罕见事件(各 0.8%;分别为 3.0% 和 12.3%)。 FGFR3 免疫组织化学染色存在于三分之一的原发性肌肉浸润性 UC 和一半的转移瘤中,而 FGFR3 突变和拷贝数变化相对不常见。
While fibroblast growth factor receptor 3 (FGFR3) is frequently mutated or overexpressed in nonmuscle-invasive urothelial carcinoma (UC), the prevalence of FGFR3 protein expression and mutation remains unknown in muscle-invasive disease. FGFR3 protein and mRNA expression, mutational status, and copy number variation were retrospectively analyzed in 231 patients with formalin-fixed paraffin-embedded primary UCs, 33 metastases, and 14 paired primary and metastatic tumors using the following methods: immunohistochemistry, NanoString nCounterTM, OncoMap or Affymetrix OncoScanTM array, and Gain and Loss of Analysis of DNA and Genomic Identification of Significant Targets in Cancer software. FGFR3 immunohistochemistry staining was present in 29% of primary UCs and 49% of metastases and did not impact overall survival (P = 0.89, primary tumors; P = 0.78, metastases). FGFR3 mutations were observed in 2% of primary tumors and 9% of metastases. Mutant tumors expressed higher levels of FGFR3 mRNA than wild-type tumors (P < 0.001). FGFR3 copy number gain and loss were rare events in primary and metastatic tumors (0.8% each; 3.0% and 12.3%, respectively). FGFR3 immunohistochemistry staining is present in one third of primary muscle-invasive UCs and half of metastases, while FGFR3 mutations and copy number changes are relatively uncommon.
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