From the Wall Street Journal [paywall]:
For months, a small company in San Francisco has been pursuing a secretive project: the birth of a genetically engineered baby.
Backed by OpenAI chief executive Sam Altman and his husband, along with Coinbase co-founder and CEO Brian Armstrong, the startup—called Preventive—has been quietly preparing what would amount to a biological first. They are working toward creating a child born from an embryo edited to prevent a hereditary disease. In recent months, executives at the company privately said a couple with a genetic disease had been identified who was interested in participating, according to people familiar with the conversations.