Baby-Gene Editor Reveals Another Volunteer is Pregnant
A Chinese scientist at the centre of an ethical storm over what he claims are the world’s first genetically edited babies said on Wednesday he is proud of his work and revealed that another volunteer is pregnant as part of the research.
In videos posted online this week, He said he used a gene-editing technology known as CRISPR-Cas9 to alter the embryonic genes of twin girls born this month.
He said gene editing would help protect the girls from infection with HIV, the virus that causes AIDS.
But scientists and the Chinese government have denounced the work that He said he carried out, and a hospital linked to his research suggested its ethical approval had been forged.
The conference moderator, Robin Lovell-Badge, said the summit organisers were unaware of the story until it broke this week.
CRISPR-Cas9 is a technology that allows scientists to essentially cut and paste DNA, raising hope of genetic fixes for disease. However, there are concerns about safety and ethics.