Stem Cell Research

Experiments with embryos suggest ways to make 3-parent IVF safer for babies

Experiments with embryos suggest ways to make 3-parent IVF safer for babies

Nearly 800 children are born in the U.S. each year with genetic diseases caused by mutations in a type of DNA inherited directly from their mothers. Scientists are working to prevent these diseases by helping couples have babies with DNA from three parents instead of the usual two.

A new study identifies some of the reasons why this fledgling technique might go awry — and suggests ways for fertility specialists to minimize the risk.

The diseases in question stem from problems in what’s called mitochondrial DNA. This is a collection of 37 genes that control the structures that provide energy to cells. Certain errors in these genes can

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