
The argument that three-person in-vitro fertilization is a step toward engineering "designer babies" doesn't make sense to Lori Martin, whose 4-year-old son Will was born with an incurable genetic disease and likely won't survive past childhood.
Three-person IVF, called mitochondrial transfer, may be on its way to fruition in the United Kingdom as a means of eliminating mitochondrial diseases like Will's by swapping out the genetic material that causes it.
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