News Research Colorectal Cancer Genetics/Genomics Decision-Making Support

ML Model Uses Methylation Patterns to Identify Tissue of Origin 

April 22, 2026 By Lisa Astor 6 min read
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5 Key Takeaways

  • 1

    A machine learning model utilizing DNA methylation patterns effectively predicts tissue of origin in cancers of unknown primary.

  • 2

    The model achieved high accuracy, with an area under the curve of 0.998 and classification accuracy of 0.954 in internal validation.

  • 3

    DNA methylation was found to be more reliable than other biomarkers for identifying tissue of origin due to its stability and specificity.

  • 4

    The research team plans to further evaluate the model in true cancers of unknown primary and explore liquid biopsy applications.

  • 5

    Findings suggest that integrating DNA methylation patterns can enhance treatment decision-making for patients with unknown primary cancers.

ASCO AI in Oncology is published by Conexiant under a license arrangement with the American Society of Clinical Oncology, Inc. (ASCO®). The ideas and opinions expressed in ASCO AI in Oncology do not necessarily reflect those of Conexiant or ASCO. For more information, see Policies.

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