Aberrant promoter hypermethylation of RAR-β in endometrial carcinoma- an Indian study.
Endometrial cancer is the seventh most common cancer in women worldwide with an age-standardized rate of 8.4 per 100,000 women. Epigenetic alterations such as promoterhypermethylation of TSGs are known to be early events in carcinogenesis. The aim of the presentstudy, we assessed the aberrant promoter hypermethylation pattern of RAR-β in 78 endometrialcancer samples. Methods: DNA was isolated from endometrial carcinoma samples and normaltissues and aberrant promoter hypermethylation was assessed using nested and methylation-specificPCR. The Chi-square test was used for statistical analysis and a p-value<0.05 was considered to bestatistically significant. Results: 40 of the 78 (51.28%) endometrial carcinoma samples showedaberrant hypermethylation of the RAR-β gene. Methylation status in each histological subtype, gradeand stage of the disease was also assessed. Conclusion: Aberrant hypermethylation is an importantearly epigenetic alteration that occurs during tumorigenesis. The Data shown here reports thatpromoter hypermethylation of RAR-β occurs in endometrial carcinoma and therefore could be usedas a potential marker for early diagnosis and prognosis of the disease.