He Jiankui, a researcher in Shenzhen, China, claims he utilized CRISPR-Cas9 gene editing to alter the DNA of embryos for seven couples.
CRISPR-Cas9 is a procedure that allows researchers to easily identify specific gene sequences, clip them out and replace them. The type of research He Jiankui is describing isn’t allowed in the U.S., and there is still quite a bit of uncertainty regarding the safety and permanence of CRISPR gene editing.
