In November 2018, a Chinese scientist named He Jankui (known to his associates as “JK”) claimed that he had successfully produced the world’s first gene-edited human babies using “gene surgery.”
The twin girls, he said, were born somewhere in China with a modified gene that makes them immune to infection from HIV, the virus that causes AIDS. A special DNA splicing technique called CRISPR/Cas 9 was used when they were embryos to make the edits. In a series of short videos posted on YouTube, JK offers an explanation of, and justification for, what he did.