Loss of heterozygosity at the 8-oxoG-DNA glycosylase (OGG1) allele is found in human kidney clear cell carcinoma identifying loss of OGG1 function as a possible contributor to tumorigenesis in the kidney.
We investigated, by an immunohistochemical staining method, the expression of hOGG1 protein in 40 cases of CC-RCC, using archival formalin-fixed tissue.
It is concluded that deletion of hOGG1 gene occurs commonly in PRCC and CC-RCC but not in renal cortical PA. Further studies are warranted to further explore the exact roles of hOGG1 gene in the development and progression of RCC.