Inherited MS patient ( 17 years) here but all the docs and nueros tell me it's very rare. My mom had this but when we research family it turned out the whole family was auto immune, IE Lupas, MS, Chrons, ect ect. They are just discovering that there are family cluster groups of auto immune. So sorry I don't have a yes/no answer for you but this may lead you to some good research. I will tell you I watch my daughter and granddaughters closely and make sure they take Vit D in winter. I make sure everyone in my family takes Vit D. Best of Luck.