As NPR reported this morning, researchers in England may soon use genetic therapy to treat diseases that result from defects in mitochondrial DNA.
Mitochondria create energy for cells, and they have their own genes, distinct from the genes that help determine our looks, behavior, and other traits. Because mitochondrial activity is critical to normal cell functioning, abnormalities in mitochondrial DNA can be devastating. Some babies die in a matter of hours.
But because the therapy involves genetic manipulation, it is controversial. While critics are right to insist that we proceed carefully with genetic therapy, many of their arguments are misguided. Continue reading