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Updated: Aug 15, 2026

Candidate Gene Testing in Clinical Cohort Studies with Multiplexed Genotyping and Mass Spectrometry
Published on: June 21, 2018
A whole-genome admixture scan finds a candidate locus for multiple sclerosis susceptibility
David Reich1, Nick Patterson, Philip L De Jager
1Department of Genetics, Harvard Medical School, Boston, Massachusetts, USA. reich@receptor.med.harvard.edu
Abstract:
Multiple sclerosis is a common disease with proven heritability, but, despite large-scale attempts, no underlying risk genes have been identified. Traditional linkage scans have so far identified only one risk haplotype for multiple sclerosis (at HLA on chromosome 6), which explains only a fraction of the increased risk to siblings. Association scans such as admixture mapping have much more power, in principle, to find the weak factors that must explain most of the disease risk. We describe here the first high-powered admixture scan, focusing on 605 African American cases and 1,043 African American controls, and report a locus on chromosome 1 that is significantly associated with multiple sclerosis.
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