GENEration Hope

Prime Editing

Prime editing is a gene-editing technology sometimes described as a search-and-replace system for DNA. It uses a modified CRISPR system plus a reverse transcriptase enzyme and a guide RNA that carries the desired edit. Prime editing may be able to make several kinds of small DNA changes, but it remains technically complex. Delivery, efficiency, off-target effects, and clinical safety are major questions.

Why it matters

Prime editing could one day matter for rare diseases caused by specific DNA changes, but it is still an emerging platform that needs careful evidence before families can know where it fits.

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