Not only is there no known cure, but people with progressive MS currently have few if any working treatments.
The 'Laverne & Shirley' actor passed away after a longtime battle with multiple sclerosis.
When it comes to being excited by experiments, age is simply not a factor for 86-year-old Prof. Ruth Arnon, co-creator of multiple sclerosis drug Copaxone.
In an interview with Vanity Fair, the "Legally Blonde" star said she's been dealing with a host of strange ailments for nearly five years, before undergoing an MRI last summer and discovering the autoimmune disease.