Multiple Sclerosis Polygenic Risk Is Not Enriched in Three Multicase Families in Comparison to Population-Based Cases.

ABSTRACT: Multiple sclerosis (MS) is a complex neurological and autoimmune disease with an established genetic component. Families with multiple cases of MS are rare but do occur. We hypothesised that multicase families may have a heightened polygenic risk for MS. In this work, we have determined whether polygenic risk for MS is enriched in multicase families in comparison to a case-control cohort. Using the findings from the largest MS genome-wide association study, we calculated a weighted polygenic risk score (wPRS) for MS. We applied this wPRS to study a population-based MS case-control cohort (3,252 people with MS and 5,725 controls) and three multicase MS families (9 individuals with MS, 10 unaffected family members). For both the population-based cohort and the three families, 167 of the 233

SUBMITTER: Chen M 

PROVIDER: S-EPMC11919224 | biostudies-literature | 2024

REPOSITORIES: biostudies-literature