Hemimethylation of the CASPASE-8 promoter was found in 11.8% of the normal ovary samples, 20% of the cystadenoma tumors and 20% of the metastatic EOC, while methylation of the CASPASE-8 promoter was absent in the EOC primary tissues (P=0.047).
The aim of the study is to investigate the relevance of rs1056663 and rs2708861 HUS1 polymorphisms, and rs104548, rs2981582 and rs2910164 polymorphisms of CASP8, FGFR2 and micro RNA 146A genes, respectively, as risk modifiers in hereditary breast or ovarian cancer (BC/OC) and risk factors in sporadic BC.
The minor allele of CASP8D302H was significantly associated with a reduced risk of breast cancer (per-allele HR, 0.85; 95% CI, 0.76-0.97; P(trend) = 0.011) and ovarian cancer (per-allele HR, 0.69; 95% CI, 0.53-0.89; P(trend) = 0.004) for BRCA1 but not for BRCA2 mutation carriers.
In the present study we investigate the relevance of RAD51 -135C > G, TP53 R72P, NQO1*2 and CASP8D302H polymorphisms as potential modifiers of BC and/or OC susceptibility conferred by these mutations.
Although p53 and FLICE-like inhibitory protein (FLIP) are determinants of CDDP sensitivity in ovarian cancer, the interaction between p53 and FLIP remains poorly understood.