Monozygotic (MZ) twins have been widely employed for dissection of the relative contributions of genetics and environment in disease. In multiple sclerosis (MS), an autoimmune demyelinating disease that commonly causes neurodegeneration and disability in young adults, disease discordance in M...

The main objective of this GWA study is to identify Multiple Sclerosis (MS) susceptibility loci. Whole-genome association analysis was performed on 924 individuals genotyped on the Affymetrix 6.0 Genechip. The cohort consisted of 860 clinically diagnosed MS patients and 64 control subjects.

This is a multi-centre, case-controlled study to develop a dataset containing 1000 MS cases and 1000 matched controls and to associate DNA sequence (allelic) variations with MS phenotypes.

Study subjects were enrolled through a prospective effort initiated in 2003. Three MS clinical ce...