If British lawmakers agree, the U.K. would become the first country in the world where the technique could be used to create babies. Experts say the procedures would likely only be used in about a dozen women every year.
"Many of these (mitochondrial) conditions are so severe that they are lethal in infancy, creating a lasting impact upon the child's family," said Alistair Kent, director of the charity, Genetic Alliance U.K., in a statement. "An added option for families at risk of having a child with such a condition is welcome."