title: Evaluating prognosis by CK7 differentiating renal cell carcinomas from oncocytomas can be used as a promising tool for optimizing diagnosis strategies.
abstract: Renal Oncocytomas and renal cell carcinomas (RCCs) share a common phenotype. This makes it very difficult to differentiate between the two tumors. Here, this study was to confirmed and expanded the findings that CK7 as a promising tool differentiate RCC from Oncocytomas across various geographic regions. A systematic search of databases was carried out and other relevant articles were also identified. Then the meta-analyses were conducted for 1,711 participants according to the standard guidelines. A total of 21 studies were included on the basis of inclusion criteria. CK7 by IHC was significantly associated with increased diagnosis of RCC (OR=10.64; 95% CI, 7.44-15.23; P=0.0001). Subgroup-analysis showed that findings didn't substantially change when only Caucasians or Asians (OR=10.58; 95% CI, 6.97-16.07; P<0.01 or OR=10.83; 95% CI, 5.39-21.74; P=0.004) were considered. There was also no significant publication bias observed. Our findings provide further evidences that the expression of CK7 contribute to differentiate RCC from Oncocytomas. CK7 protein overexpression was found in RCC, low expression in any of Oncocytomas. CK7 is potentially an important renal tumor marker.
authors.affiliation: Department of Urology, 2nd Hospital of Tianjin Medical University, Tianjin Institute of Urology, Tianjin 300211,China.
authors.forename: Fuling
authors.initials: F
authors.lastname: Ma
authors.affiliation: Department of Urology, 2nd Hospital of Tianjin Medical University, Tianjin Institute of Urology, Tianjin 300211,China.
authors.forename: Liang
authors.initials: L
authors.lastname: Dai
authors.affiliation: Department of Urology, 2nd Hospital of Tianjin Medical University, Tianjin Institute of Urology, Tianjin 300211,China.
authors.forename: Zhun
authors.initials: Z
authors.lastname: Wang
authors.affiliation: Department of Urology, Peking University First Hospital, The Institute of Urology, Peking University, Beijing 100034, China.
authors.forename: Liqun
authors.initials: L
authors.lastname: Zhou
authors.affiliation: Department of Urology, 2nd Hospital of Tianjin Medical University, Tianjin Institute of Urology, Tianjin 300211,China.
authors.forename: Yuanjie
authors.initials: Y
authors.lastname: Niu
authors.affiliation: Department of Urology, 2nd Hospital of Tianjin Medical University, Tianjin Institute of Urology, Tianjin 300211,China.
authors.forename: Ning
authors.initials: N
authors.lastname: Jiang
mesh_terms: D018249:Adenoma, Oxyphilic / Q000175:diagnosis* / Q000208:ethnology; D014408:Biomarkers, Tumor / Q000032:analysis*; D002292:Carcinoma, Renal Cell / Q000175:diagnosis* / Q000208:ethnology; D003937:Diagnosis, Differential; D006801:Humans; D007150:Immunohistochemistry; D053552:Keratin-7 / Q000032:analysis*; D007680:Kidney Neoplasms / Q000175:diagnosis* / Q000208:ethnology; D011379:Prognosis; D017594:Publication Bias
chemical_list: D014408:Biomarkers, Tumor; D053552:Keratin-7
keywords: CK7; meta-analysis; renal carcinomas