The Basics of Genetics in Multiple Sclerosis
Aliza Ben-Zacharia, RN, CRRN, MSN, MSCN, ANP-BC; and Linda Morgante, RN, CRRN, MSN, MSCN:
"The risk of developing MS in people who have no relatives with MS is about 1 in 1,000. Eighty percent (80%) of people who develop MS have no relatives with MS, and 20% have at least one affected relative with the disease. The risk of MS in the siblings of a person with MS is significantly higher.