Unethical experiments’ painful contributions to today’s medicine

(CNN)Chinese scientist He Jiankui sent shockwaves around the world last year with his claim that he had modified twin babies’ DNA before their birth. The modification was made with gene editing tool CRISPR-Cas9, he said, and made the babies resistant to HIV. Scientists from China and around the world spoke out about the experiment, which many say was unethical and not needed to prevent the virus. The scientist had also been warned by peers not to go down this path. When He made his claim of genetically altering humans, the response from the global medical community was swift and condemning. “It is out of the question that the experiment is unethical,” said Jing Bao Nie, professor of bioethics at the …