DNA methylation is a normal phenomenon which helps in gene expression, cell differentiation and is an inheritable process. Altered DNA methylation patterns in coding strands lead to epigenetic modification. These epigenetic changes enhances DNA adduct formation, somatic mutations and oncogene activation. During silencing of tumor suppressor genes, various genes/proteins involved in signaling pathways gets disturbed. These changes are reversible but if mutations occur they become irreversible.

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... nce early detection of these genes/proteins involved in epigenetic alterations may help in decreasing the associated changes in the body.