I found this article on the New York times website. It describes an exon skipping technique as a possible treatment for Duchenne muscular dystrophy. Unfortunately the drug has not been confirmed as a viable treatment but it looks promising.

There is also a fun video included at the bottom of the page if you are interested =)

http://www.nytimes.com/2013/09/24/health/gene-therapy-with-a-difference.html?ref=science&_r=0