This teen once suffered hundreds of seizures a day. Now he can walk thanks to an experimental drug.

This teen once suffered hundreds of seizures a day. Now he can walk thanks to an experimental drug.

Connor Dalby could not walk for the first 14 years of his life, so his newfound ability to scamper down hallways is miraculous on its own. But the experimental drug that reduced his severe and frequent seizures by 90% has also conveyed a host of other benefits. For his mother, Kelley Del Real, other improvements are equally transformative, not just for Connor, but for a family that has cared for him around the clock since his symptoms appeared a…