is it even possible for gene therapy to just rewrite all the existing DNA in a body? can't you only do that to cells that are dividing or whatever?
>CRISPR/Cas9 can be directed to cut DNA in targeted areas, enabling the ability to accurately edit (remove, add, or replace) DNA where it was cut. The modified blood stem cells are transplanted back into the patient where they engraft (attach and multiply) within the bone marrow...
https://www.fda.gov/news-events/press-announcements/fda-appr...