Prime Medicine edits human DNA inside the body for first time in Wilson disease trial
Prime Medicine has treated the first patient in a clinical trial using prime editing, a precise gene-editing technique, to correct a mutation in liver cells directly inside the body. The target is Wilson disease, caused by mutations in the ATP7B gene that leave excess copper to build up and damage the liver and nervous system. The company says it expects to report initial trial results next year.
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This marks a shift from the standard approach of editing cells outside the body and reinfusing them, toward directly rewriting DNA in vivo, which could make treatments cheaper and faster to produce, according to researchers in the field. However, experts such as Krishanu Saha note that in-body editing carries its own safety trade-offs that remain to be understood. Success here could encourage other companies pursuing similar in vivo gene-editing strategies for rare genetic diseases.
- First known case of prime editing used directly inside a human body
- Trial targets Wilson disease by correcting the ATP7B gene mutation in liver cells
- Results from the study are expected to be announced next year
Source: nature.com — Heidi Ledford, 2026-10-22
Published there as: “A first for CRISPR: powerful prime editing alters DNA directly in the human body”
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