http://www.sciencemag.org/news/2020/09/commission-charts-narrow-path-editing-human-embryos

He Jiankui shocked the world when he described the implantation of edited embryos that led to the birth of twin girls, Lulu and Nana.

No recent biomedical experiment has caused more consternation than He Jiankui’s creation of the first gene-edited babies, in 2018, which was widely seen as dangerous, unethical, and premature—and which led to his incarceration by China. Now, an international committee has concluded that gene-editing methods, despite substantial improvements, are still far from mature enough to safely introduce heritable DNA modifications into human embryos.