• Yanru Chen, Zhangzhe Yan, Yanping Su, and Shang Zhao.
• Department of Histology & Embryology, Shandong First Medical University and Shandong Academy of Medical Sciences, Yingshengdong Road, Taishan District, Tai'an, Shandong China.
• J Coll Physicians Surg Pak. 2022 May 1; 32 (5): 632-638.

AbstractClear cell renal carcinoma (CCRC) is the most common type of renal carcinoma. We hope to find out the potential key genes playing important roles in CCRC genesis and progression by analysing the recent expression profiling by array from 2014 to 2016. In order to find out the differentially expressed genes (DEGs) between CCRC and normal renal tissue. Gene Ontology (GO) and Kyoto Encyclopedia of Genes, and Genomes (KEGG) pathway enrichment were carried out by the Database for Annotation, Visualization and Integrated Discovery (DAVID) v6.8. Protein-Protein Interaction (PPI) Networks Functional Enrichment Analysis of these DEGs was analyzed using the Search Tool for Recurring Instances of Neighbouring Genes (STRING). The results were then visualized by the software Cytoscape. The authors also used the online tool of Kaplan-Meier plotter survival analysis to assess the significance of the top ten genes in the prognosis of CCRC. A total of 192 DEGs were identified and the top ten key genes were picked out by the software Cytoscape. FN1, CXCR4, LOX, and PLG were then further screened out based on the overall survival analysis; SLC12A1 and LOX were screened out after the recurrence-free survival analysis. LOX was finally believed to be the most reliable prognostic factor since it has prognostic value for both overall survival and recurrence-free survival analysis. Our analysis suggests that LOX is the most reliable prognostic factor for CCRC patients. Key Words: Renal clear cell carcinoma, Microarray datasets, Bioinformatics approach, Prognostic factor, LOX.

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