If it's successful, it could give a major boost to the fledgling field of gene therapy. Editing a gene inside the body is a bold attempt to permanently change a person's DNA to try to cure a disease. What could go wrongSafety issues plagued some earlier gene therapies that weren't considered gene editing because they didn't target a specific location in the genome. "The advantage with gene editing is you can put the gene in where you want it." Madeux, 44, makes his way through the UCSF Benioff Children's Hospital to prepare for the special human gene editing therapy.

Source: CBC News November 15, 2017 15:25 UTC