gene editing

In experimental embryos, scientists were able to repair the gene that causes a serious heart disorder. More research is needed to confirm the method would produce healthy babies, they say.

An easier way to edit genes, called CRISPR-Cas9, is revolutionizing biomedical research. But as patents and big prizes hover, some contributors to the discovery aren't getting much credit.

A Swedish biologist wants to change the genes of healthy human embryos to find ways to treat infertility and other diseases. The experiments intensify ethical questions about genetic engineering.

Researchers experimenting with chimeric embryos say they could develop into adult pigs, sheep or cows with human organs that one day might be suitable for transplantation in people.

A tool for modifying genes is spreading through the biomedical research world like wildfire. As part of the series Joe's Big Idea, NPR's Joe Palca explores why CRISPR-Cas9 is becoming indispensable.

The unusual meeting was called to consider a ban on certain uses of a new technique that can make precise changes in DNA. The main concern is altering genes in human sperm, eggs and embryos.