DNA Methylation Signatures in Breast Cancer: A Systematic Review and Meta-Analysis

A meta-analysis of 144 breast cancer samples reveals a common DNA methylation pattern across all subtypes, notably involving immune system and cell cycle deregulation.

• Why it matters: Understanding shared epigenetic signatures can improve diagnosis and prognosis of breast cancer, addressing the limitations of small sample sizes and lack of statistical power in individual studies.
• What they did: Researchers systematically reviewed four studies following PRISMA guidelines, analyzing 13 comparisons and identifying significant gene and pathway alterations related to immune response and cell cycle regulation.
• The result: The findings suggest that common methylation changes may serve as potential biomarkers and therapeutic targets, with the integrative approach providing enhanced insights into breast cancer epigenetics.