Cookies on this website
We use cookies to ensure that we give you the best experience on our website. If you click 'Continue' we'll assume that you are happy to receive all cookies and you won't see this message again. Click 'Find out more' for information on how to change your cookie settings.

Multiple sclerosis (MS) is now thought to be a complex trait determined by genetic and non-genetic (environmental) factors. The study group, identified from the Canadian Collaborative Project on Genetic Susceptibility to MS, consisted of 1,083 MS index cases, 2,166 of their parents and 3,112 of their sibs. The results, together with those of a previous study on an independent data set, suggest that gender, age of MS onset and having one parent with MS may individually and interactively alter sib risks for MS. These data are important for genetic counselling and for molecular genetic (genome screens, candidate gene analyses) studies.


Journal article


Clin Genet

Publication Date





431 - 435


Adolescent, Adult, Age of Onset, Aged, Family Health, Female, Humans, Male, Middle Aged, Multiple Sclerosis, Risk Factors, Sex Factors