Narcolepsy linked to immune system

But the association is not the final piece of the puzzle, Mignot says. Even with all of the known genetic risk factors, including the newly discovered version of the T cell receptor gene, a person has only a 1.5 percent chance of developing narcolepsy, he says. That suggests that, while narcolepsy is probably an autoimmune disorder, further genetic and environmental triggers and risk factors remain to be found.

http://sciencenews.org/view/generic/id/43455/title/Narcolepsy_linked_to_immune_system