Breast cancer (BC) is the most common malignancy in women worldwide. The methylation status of , a tumor suppressor gene, is enrolled in various cancers, i.e., BC. Various studies showed the impact of epigenetic dysregulation in BC. This study aimed to investigate the methylation status and expression level of in BC patients and its association with the expression of . This case-control study was conducted on 30 cases (pathology-confirmed ductal carcinoma) and 18 controls (fibroadenoma and fibrocystic masses), referred to Velayat Hospital, Qazvin, Iran. The expression of the and and the promoter methylation of the were evaluated in tissue blocks of BC patient masses using qRT-PCR and MS-PCR assays, respectively. SPSS 24.0 was used to analyze the data. The promoter is hypermethylated in BC patients compared to controls (p =0.001). The expression level of in BC patients was significantly reduced compared to controls (fold change =0.13, p =0.042). In addition, in BC patients, the reduced expression level of was significantly associated with methylation of the promoter (p =0.001). There is no significant difference between the expression level of in BC patients and controls (p =0.197). A significant association is found between the expression of and the methylation status of the promoter (p =0.038). The expression level of is affected by the methylation status of the promoter of this gene. Moreover, the expression level and methylation status of are correlated with clinical parameters.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10560649PMC
http://dx.doi.org/10.18502/ijhoscr.v17i3.13303DOI Listing

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