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Is Multiple Sclerosis Genetic?
- Heritability
- ~64%
- Inheritance
- polygenic
- Key genes
- HLA-DRB1 IL7R IL2RA
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Autoimmune demyelinating disease with heritability ~64%. HLA-DRB1*15:01 is the strongest risk allele; over 200 loci identified.
How Genetic Is Multiple Sclerosis?
Multiple Sclerosis involves complex interactions between multiple genes and environmental factors. Heritability estimates range up to 64%, though no single gene determines outcome on its own.
Key genes associated with Multiple Sclerosis: HLA-DRB1 IL7R IL2RA. Variants in these genes have been identified through genome-wide association studies (GWAS) and clinical research as influencing susceptibility or severity.
Source: MedlinePlus Genetics
Does Family History Matter for Multiple Sclerosis?
Family history can be informative for Multiple Sclerosis, but its predictive power is limited because many genes — each with small effects — combine with environmental influences. A family history of the condition may prompt earlier or more frequent screening.
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