Research identifies new genes linked with MS

The other gene identified by the whole genome scan -- the IL-2 receptor -- has been linked to two other autoimmune diseases: type 1 diabetes and autoimmune thyroid disease.

"The story here is the commonality of autoimmune disease," Hafler said.

Researchers believe both environmental and genetic factors play a role in the development of MS, which attacks and destroys the insulation along nerve fibers.

MS symptoms range from mild muscle weakness to partial or complete paralysis.