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Genetics of Restless Legs Syndrome (RLS)

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Movement Disorder Genetics

Abstract

Restless legs syndrome (RLS) is a complex genetic disease characterized by dysesthesias primarily affecting the lower limbs, which are precipitated by rest and classically occur at night. Movement of the affected extremity leads to prompt symptom relief. Genetically, RLS is a complex disorder with a heritability of up to 60 %. While linkage analyses were largely unsuccessful, genome-wide association studies (GWAS) have identified six genomic loci, to date, which harbor common genetic variants associated with an increased risk for RLS. At least one of these regions also harbors rare variants, which contribute to the genetic architecture of the disease. The first functional follow-up studies in the post-GWAS era have implicated expression alterations and forebrain development as well as dysfunctional iron metabolism as the possible downstream effects of the RLS-associated genetic alterations.

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Correspondence to Juliane Winkelmann MD .

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Schulte, E.C., Winkelmann, J. (2015). Genetics of Restless Legs Syndrome (RLS). In: Schneider, S., Brás, J. (eds) Movement Disorder Genetics. Springer, Cham. https://doi.org/10.1007/978-3-319-17223-1_15

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