Building simulations based on real genetic data, researchers conclude Gattaca-like tactics to choose the traits of future offspring would yield little payoff.

Emails reveal that a facility in Dubai and others have asked geneticist He Jiankui for help in gene-editing embryos.

A company announces the first pregnancy in a study of whether donor mitochondria can boost IVF’s odds of success.

He Jiankui could face charges after an investigation finds he used techniques prohibited in China to edit the genes of twin girls.

The girl was born in Brazil in December 2017.

He Jiankui, who reportedly edited the genomes of two babies already, broke the news at a conference in Hong Kong.

One lab finds that a similar method produces large genetic deletions when performed in mouse embryos.

The use of pronuclear transfer to treat infertility must first be backed by evidence it can work in cases where parents seek to avoid mitochondrial mutations.

Only two members of the subspecies are now left alive.