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In vivo assessment of nuclease off-target activity has primarily been indirect or through ChIP-based detection of double-strand break DNA repair factors, which can be cumbersome. Here, the authors show that GUIDE-tag, enables one-step off-target genome editing analysis in mouse liver and lung.

Long-term expression of Cas9 following precision genome editing in vivo may lead to undesirable consequences. Here we show that a single-vector, self-inactivating AAV system containing Cas9 nuclease, guide, and DNA donor can use homology-directed repair to correct disease mutations in vivo.

Worldwide pandemics of obesity and diabetes prompt an urgent need for new approaches to their prevention and cure. Here the authors present a CRISPR-based strategy that enhances the therapeutic potential of human adipocytes when implanted in obese mice.

Prime editors use a template sequence within their pegRNA to facilitate nucleotide substitutions or local indels. Here the authors use AAVs to deliver a split-intein prime editor in vivo to correct a pathogenic mutation.

Therapeutic genome engineering relies on the development of reliable, robust and versatile tools. Here the authors develop Cas9-Cas9 chimeras with high target site activity that generate predictable deletions.

The original version of this Article contained errors in the author affiliations. Mehmet Fatih Bolukbasi was incorrectly associated with Bluebird Bio., Cambridge, MA, USA and Ankit Gupta was incorrectly associated with Exonics Therapeutics, Watertown, MA, USA. This has now been corrected in the HTML version of the Article. The PDF version of the Article was correct at the time of publication.