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The researchers used these 122,348 regions to create unique methylation "signatures" for different types of adenomas—specifically Sessile Serrated Lesions (SSL), Traditional Serrated Adenoma (TSA), and VA/TVA (Villous/Tubulovillous Adenoma).

The study allowed for precise differentiation of molecular pathways that lead to colorectal cancer (CRC), reinforcing that distinct histological groups (SSL vs. TSA vs. VA) are driven by unique molecular machinery. If you are working on a similar research project,

Identifying such a large number of specific DMRs offers potential for developing highly accurate molecular diagnostics to classify polyp risk, potentially distinguishing between aggressive polyps and benign ones. 3. Comparison and Methodology 122348

The study identified these 122,348 genomic regions as having significantly different methylation patterns (adding or removing methyl groups, which changes gene expression) between various colorectal adenoma (precancerous polyp) subtypes and normal tissue. 122,348. Hypermethylated regions (Gene silencing): 6,263. Hypomethylated regions (Gene activation): 116,050.

These DMRs suggest that DNA methylation changes are a crucial, early event in colorectal tumorigenesis, acting before severe morphological changes occur in the cells. The researchers used these 122,348 regions to create

the specific genes affected within those 122,348 regions? Find the original article for more detailed methodology?

Colorectal Adenoma Subtypes Exhibit Signature Molecular Profiles VA) are driven by unique molecular machinery

Each adenoma subtype was directly compared to normal tissue to identify unique methylation signatures.