The fertility treatment, known as mitochondrial transfer, tries to replace a faulty part of a mother‘s egg with healthy material from a donor, creating a “genetically modified child” with three biological parents. The technique has proven successful in human cells in the ivf laboratory and is awaiting recognition.It involves intervening in the fertilization process to remove faulty mitochondrial DNA, which can cause inherited conditions such as fatal heart problems, liver failure, brain disorders, blindness and muscular dystrophy. https://ivftraining.wordpress.com/2014/01/25/future-of-ivf/