The single-arm, open-label DR-OVP-002 study is currently evaluating Ovaprene in sexually active women aged 18 to 40 years who are at risk for pregnancy or desiring contraception.

The new method, which is illegal in the United States but approved in Britain since 2015, adds a tiny bit of healthy mitochondrial DNA from a donor’s egg to the mix, with more than 99% of the child’s ...