5‑methylcytosine and 5‑hydroxymethylcytosine are synergistic biomarkers for early detection of colorectal cancer

Read our bioRXiv preprint: 5‑methylcytosine and 5‑hydroxymethylcytosine are synergistic biomarkers for early detection of colorectal cancer

Early cancer detection has the potential to significantly improve treatment outcomes and survival rates. Our study investigates the roles of 5‑methylcytosine (5mC) and 5‑hydroxymethylcytosine (5hmC) as biomarkers for early-stage colorectal cancer (CRC) detection in cell-free DNA (cfDNA).

What can you expect to learn from the paper? Here are featured highlights from the paper in the figures above:

  • Figure 1C: 5hmC offers additional discriminatory power in the early stages of CRC progression
  • Figure 2A: methylation changes demonstrated by combining 5mC and 5hmC allow for the tracking of changes within tumour progression
  • Figure 2B: early-stage detection, CRC 5hmC is shown to provide complementary information to that of 5mC
  • Figure 2D: later-stage cancer, the discernible increase in 5hmC allows for increased accuracy of disease progression

Together, the 5mC and 5hmC model shows an 85% sensitivity (at 95% specificity) for early-stage cancer detection. This groundbreaking data is a paradigm shift for liquid biopsy and cancer research.

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As well as helping researchers identify tumour DNA amid the soup of regular cell-free DNA, the fact that different tissues have distinct methylation patterns can help explain where the cell-free DNA might be coming from. “There are many advantages to being able to study epigenomics in concert with genomic features,” says Dawson.

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