The first infant to undergo gene-editing therapy has accomplished another first — his first steps. KJ Muldoon is walking and ...

The baby saved from a rare disease by a first-ever personalized gene fix has reached a big milestone, taking his first steps ahead of Christmas. KJ Muldoon is walking and getting ready to celebrate ...

A baby born with a rare and life-threatening genetic disorder has taken his first steps after receiving a groundbreaking, ...

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