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ORIGINAL ARTICLE
Year : 2017  |  Volume : 130  |  Issue : 18  |  Page : 2176-2182

Roles of Loss of Chromosome 14q Allele in the Prognosis of Renal Cell Carcinoma with C-reactive Protein Abnormity


1 Department of Urology, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, China
2 Department of Neurosurgery, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001; Department of Pharmacology, Harbin Medical University, Harbin, Heilongjiang 150081, China
3 Department of Pharmacy, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, China
4 Department of Urology, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, China

Correspondence Address:
Cheng Zhang
Department of Urology, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001
China
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0366-6999.213962

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Background: Renal cell carcinoma (RCC) is frequently associated with paraneoplastic inflammatory syndrome (PIS). This study aimed at exploring the connections between the survival rate and specific gene alterations and the potential mechanism. Methods: We retrospectively studied 69 surgical RCC cases from August 2014 to February 2016, including 18 cases of clear cell RCC (ccRCC) demonstrating elevated pretreatment serum C-reactive protein (CRP, Group A). Twelve of the 18 cases were symptomized with febrile episode. We also selected 49 cases of ccRCC with normal pretreatment CRP (Group B). Using 22 microsatellite markers, we compared the incidence of loss of heterozygosity (LOH) between Group A and Group B. All statistical tests are two-sided. Results: The 3p LOH was common in both Group A (89%) and Group B (92%). The frequency of 14q LOH in Group A (16 of 18) was higher than Group B (4 of 49, χ2 = 40.97 P < 0.0001). The 3p and 14q LOH were the characteristics of ccRCC with elevated acute phase reactants, including PIS, regardless of the presence of metastasis. On the contrary, 14q LOH was a rare genomic alternation in advanced-staged ccRCC without PIS. The overall survival of patients with elevated CRP (33.3%) was lower than its counterparts (6.1%, hazard ratio=1.852, P < 0.0001) in Kaplan-Meier curve. Conclusions: The results imply that the disruption of a 14q gene(s) might result in not only the inflammatory manifestations in the tumor host but also the poor survival rate as well. The isolation of the gene(s) on 14q might be a vital goal in the treatment of PIS-associated RCC.


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