I hope they can expand this to other genetic problems. There are hundreds of genetic issues science knows about. Just off the top of my head I can think of high cholesterol, cystic fibrous, and sickle cell anemia. I know there are others, but I'm just a layman not a medical doctor. Those who have any of the above would like to be cured.
The trick right now is in knowing exactly what gene to express. It's like the Ionis Huntington's trial, just one well-known gene to suppress (albeit in cerebrospinal fluid, so the stage 1 trials were interesting). And of course, the first-wave funding will go to stuff that absolutely, positively will kill a person stone dead.
As soon as there's multiple targets it gets more complicated. Familial Hypercholesteroleamia could be any of three genes in it's least complex setup. I wouldn't be surprised to see a scam "therapy" marketed for it by the end of the year...