Key points from article :
Harvard Medical School use CRISPR/Cas9 gene-editing technology to inactivate 62 porcine endogenous retroviruses (PERVs) in pig embryos. Ten times more edits than in any other animal.
May allow pig organs to be suitable for human transplantation.
Cutting multiple genes will also be useful for human therapies because many diseases with a genetic component involve more than one gene.