Setting It Level · Viral Post Fact Check ·

Scientists successfully removed the extra chromosome responsible for Down syndrome using CRISPR.

Screenshot of the viral post we checked, claiming: Scientists successfully removed the extra chromosome responsible for Down syndrome using CRISPR.
The post as it circulated. Faces of private individuals are blurred.

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What We Found

In 2025, Mie University researchers used CRISPR to remove the extra chromosome 21 from some lab-grown cells (PNAS Nexus).

It worked in only a fraction of cells (up to about 37.5%).

It's an early lab step, not a treatment for people.

Sources

  1. mie-u.ac.jp (opens in new tab)
  2. pubmed.ncbi.nlm.nih.gov (opens in new tab)

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