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Papillary renal cell carcinoma: a clinicopathological and whole-genome exon sequencing study

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单位: [1]Shihezi Univ, Dept Pathol, Key Lab Xinjiang Endem & Ethn Dis, Sch Med,Minist Educ China, Shihezi, Xinjiang, Peoples R China [2]Shihezi Univ, Sch Med, Affiliated Hosp 1, Dept Pathol, Shihezi, Xinjiang, Peoples R China [3]Shihezi Univ, Community Hosp, Shihezi City, Xin Jiang, Peoples R China [4]Huazhong Univ Sci & Technol, Tongji Med Coll, Tongji Hosp, Ctr Canc, Wuhan, Hubei, Peoples R China
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关键词: Papillary renal cell carcinoma whole-exome sequencing gene mutation

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Papillary renal cell carcinoma (PRCC) represents the second most common histological subtype of RCC, and comprises 2 subtypes. Prognosis for type 1 PRCC is relatively good, whereas type 2 PRCC is associated with poor clinical outcomes. The aim of the present study was to evaluate the clinicopathological and mutations characteristics of PRCC. Hence, we reported on 13 cases of PRCC analyzed using whole-exome sequencing. Histologically, type 2 PRCC showed a higher nuclear grade and lymphovascular invasion rate versus type 1 PRCC (P < 0.05). Immunostaining revealed type 1 PRCC had higher CK7 and lower Top IIa expression rates (P < 0.05). Whole-exome sequencing data analysis revealed that the mutational statuses of 373 genes (287 missense, 69 silent, 6 nonsense, and 11 synonymous mutations) differed significantly between PRCC and normal renal tissues (P < 0.05). Functional enrichment analysis was used to classify the 287 missense-mutated genes into 11 biological process clusters (comprised of 61 biological processes) and 5 pathways, involved in cell adhesion, microtubule-based movement, the cell cycle, polysaccharide biosynthesis, muscle cell development and differentiation, cell death, and negative regulation. Associated pathways included the ATP-binding cassette transporter, extracellular matrix-receptor interaction, lysosome, complement and coagulation cascades, and glyoxylate and dicarboxylate metabolism pathways. The missense mutation status of 19 genes differed significantly between the groups (P < 0.05), and alterations in the EEF1D, RFNG, GPR142, and RAB37 genes were located in different chromosomal regions in type 1 and 2 PRCC. These mutations may contribute to future studies on pathogenic mechanisms and targeted therapy of PRCC.

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出版当年[2014]版:
大类 | 4 区 医学
小类 | 4 区 肿瘤学 4 区 病理学
最新[2025]版:
大类 | 4 区 医学
小类 | 4 区 肿瘤学 4 区 病理学
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出版当年[2013]版:
Q3 ONCOLOGY Q3 PATHOLOGY
最新[2023]版:
Q3 PATHOLOGY Q4 ONCOLOGY

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第一作者单位: [1]Shihezi Univ, Dept Pathol, Key Lab Xinjiang Endem & Ethn Dis, Sch Med,Minist Educ China, Shihezi, Xinjiang, Peoples R China
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