STAT+: Pioneering trial for treating genetic disease before birth nears reality

SAN FRANCISCO — While Tippi MacKenzie was a postdoctoral fellow in the early 2000s, she and her lab mates experimented with using the then-new technology of gene replacement therapy to try to treat inherited disorders in mice before they were born. Over and over it worked. They cured mice with hemophilia and mice with tyrosinemia. And the whole time, people kept telling her that gene therapy in human fetuses was just around the corner, just five years away.  It’s now been 25 years, and such a re...