OGG1 and neoplasm: There was no difference of hOGG1 protein expression in HG-SOC, LG-SOC, and serous cystadenoma (p = 0.31, Figure 4), as well as among tumor-adjacent normal tissues, including HG-SOC, LG-SOC, serous cystadenoma, and normal control (p = 0.60, Figure 4).