Science

New DNA sequencing methods detect rare mutations acquired as bodies grow and age

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Briefings

The Somatic Mosaicism across Human Tissues (SMaHT) Network published its first comprehensive benchmarking study in the journal Cell, identifying somatic mutations as the seeds of common noncancerous diseases. This initiative catalogs normal somatic mutation processes to understand how these changes accumulate across human tissues over time. The study provides a foundational framework for understanding the biological mechanisms driving age-related disease progression.

Key points

• The Somatic Mosaicism across Human Tissues (SMaHT) Network is a National Institutes of Health Common Fund initiative focused on cataloging normal somatic mutation processes.
• The study was published in the journal Cell, marking the first comprehensive benchmarking of somatic mutation across human tissues.

Context and limitations

The study covers only somatic mutations, not germline mutations. It is a benchmarking study rather than a clinical trial. Results are preliminary and subject to further validation in larger cohorts.

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