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Desautels A, Turecki G, Montplaisir J, Sequeira A, Verner A, Rouleau GA. Identification of a major susceptibility locus for restless legs syndrome on chromosome 12q. Am J Hum Genet 2001; 69:1266-70. [PMID: 11704926 PMCID: PMC1235538 DOI: 10.1086/324649] [Citation(s) in RCA: 207] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2001] [Accepted: 09/27/2001] [Indexed: 11/04/2022] Open
Abstract
Restless legs syndrome (RLS) is a neurological disorder characterized by leg paresthesia associated with an irresistible urge to move that often interferes with nocturnal sleep, leading to chronic sleep deprivation. To map genes that may play a role in the vulnerability to RLS, a genomewide scan was conducted in a large French-Canadian family. Significant linkage was established on chromosome 12q, for a series of adjacent microsatellite markers with a maximum two-point LOD score of 3.42 (recombination fraction.05; P=6x10(-4); autosomal recessive mode of inheritance), whereas multipoint linkage calculations yielded a LOD score of 3.59. Haplotype analysis refined the genetic interval, positioning the RLS-predisposing gene in a 14.71-cM region between D12S1044 and D12S78. These findings represent the first mapping of a locus conferring susceptibility to RLS.
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Affiliation(s)
- Alex Desautels
- Centre d'étude du sommeil, Hôpital du Sacré-Cœur de Montréal and Centre de recherche en sciences neurologiques, Université de Montréal, Research Center, Douglas Hospital, and Montreal Genome Centre and Centre for Research in Neurosciences, The Montreal General Hospital, McGill University, Montréal
| | - Gustavo Turecki
- Centre d'étude du sommeil, Hôpital du Sacré-Cœur de Montréal and Centre de recherche en sciences neurologiques, Université de Montréal, Research Center, Douglas Hospital, and Montreal Genome Centre and Centre for Research in Neurosciences, The Montreal General Hospital, McGill University, Montréal
| | - Jacques Montplaisir
- Centre d'étude du sommeil, Hôpital du Sacré-Cœur de Montréal and Centre de recherche en sciences neurologiques, Université de Montréal, Research Center, Douglas Hospital, and Montreal Genome Centre and Centre for Research in Neurosciences, The Montreal General Hospital, McGill University, Montréal
| | - Adolfo Sequeira
- Centre d'étude du sommeil, Hôpital du Sacré-Cœur de Montréal and Centre de recherche en sciences neurologiques, Université de Montréal, Research Center, Douglas Hospital, and Montreal Genome Centre and Centre for Research in Neurosciences, The Montreal General Hospital, McGill University, Montréal
| | - Andrei Verner
- Centre d'étude du sommeil, Hôpital du Sacré-Cœur de Montréal and Centre de recherche en sciences neurologiques, Université de Montréal, Research Center, Douglas Hospital, and Montreal Genome Centre and Centre for Research in Neurosciences, The Montreal General Hospital, McGill University, Montréal
| | - Guy A. Rouleau
- Centre d'étude du sommeil, Hôpital du Sacré-Cœur de Montréal and Centre de recherche en sciences neurologiques, Université de Montréal, Research Center, Douglas Hospital, and Montreal Genome Centre and Centre for Research in Neurosciences, The Montreal General Hospital, McGill University, Montréal
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