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Researchers have announced “the first case of human germline genetic modification resulting in normal healthy children.”* Specifically, the researchers transplanted ooplasm from donor eggs into the eggs of women whose infertility was due to ooplasmic defects. One side effect of those transplants was the transfer of mitochondria, introducing new mitochondrial DNA (mtDNA) into the eggs. This news should gladden all who welcome new children into the world. And it should trouble those committed to transparent public conversation about the prospect of using “reprogenetic” technologies to shape future children…