This article about the gathering of Virginia Tech students following the shooting mentions a graduate student with Dejerine-Sottas:

Jessica Swanson, another graduate student at the convocation, said she knew one of the victims, Ryan Clark, whom she called “Stack.”
Swanson, who has Dejerine-Sottas syndrome, a neuromuscular disease that makes it difficult for her to speak, is studying for a master’s of business administration. Her comments were relayed through Kim Pagans, her assistant.
Clark, Swanson said, was “a really nice guy. A down-to-earth guy.”