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Whole-transcriptome Sequencing Identified Gene Expression Signatures Associated with Aggressive Clear Cell Renal Cell Carcinoma

Overview
Journal Genes Cancer
Specialty Oncology
Date 2019 Jan 4
PMID 30603059
Citations 8
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Abstract

Clear cell renal cell carcinoma (ccRCC) is the most prevalent subtype of kidney cancer, yet molecular biomarkers have not been used for the prognosis of ccRCC to aide clinical decision making. This study aimed to identify genes associated with ccRCC aggressiveness and overall survival (OS). Samples of ccRCC tumor tissue were obtained from 33 patients who underwent nephrectomy. Gene expression was determined using whole-transcriptome sequencing. The Cancer Genome Atlas Kidney Renal Clear Cell Carcinoma (TCGA-KIRC) RNA-seq data was used to test association with OS. 290 genes were differentially expressed between tumors with high and low stage, size, grade, and necrosis (SSIGN) score (≥7 . ≤3) with <0.05. Four genes, , , , and , were also over-expressed in advanced stage (III and IV) and high grade (3 and 4) ccRCC and tumor with necrosis ( <0.05). Investigation stratifying by stage found that and overexpression were significantly associated with poorer OS in the early stage (Quartile 1 vs. Quartile 4, HR = 3.87, 95% CI:1.25-11.97, = 0.02 and HR = 4.77, 95% CI:1.37-16.57, = 0.04 respectively). These genes are potential biomarkers of ccRCC aggressiveness and prognosis that direct clinical and surgical management.

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