A single-letter edit in DNA reduces levels of the disease-causing prion protein in the brain and could lead to a preventative, one-time treatment for the deadly neurodegenerative disorder.
By adapting virus-like particles to carry the machinery for a type of gene editing called prime editing, scientists have corrected disease-causing mutations in animals and increased editing efficiency.
Katherine Chao talks about her work managing the Genome Aggregation Database (gnomAD) and the importance of diverse datasets in rare disease diagnosis.