Abstract:
:Multiple sclerosis (MS) is a common disease of the central nervous system characterized by myelin loss and progressive neurological dysfunction. An underlying genetic susceptibility plays a clear role in the etiology of MS, likely acting in concert with an undefined environmental exposure. Full-genome screenings in multiplex MS families have identified several susceptibility regions, supporting a polygenic model for MS. Among these regions, evidence for weak linkage was observed at 3p/3cen suggesting the presence of an MS gene(s) of modest effect. Encoded here are two chemokine receptors, CCR5 and CCR2B. We examined the chromosome 3p21-24 region in 125 MS families (322 total affecteds and 200 affected sib-pairs), and performed genetic analyses of CCR5 and CCR2B loci and two nearby markers (D3S1289 and D3S1300) using both linkage- and association-based tests. No evidence of linkage to MS was observed for any of the tested markers. Affected relative-pair (SimIBD) and sib-pair analyses (ASPEX), and association testing (sib-TDT) for each locus were also not significant. However, age of onset was approximately 3 years later in patients carrying the CCR5delta32 deletion (P=0.018 after controlling for gender effects). Thus, chemokine receptor expression may be associated with differential disease onset in a subset of patients, and may provide a therapeutic target to modulate inflammatory demyelination.
journal_name
Immunogeneticsjournal_title
Immunogeneticsauthors
Barcellos LF,Schito AM,Rimmler JB,Vittinghoff E,Shih A,Lincoln R,Callier S,Elkins MK,Goodkin DE,Haines JL,Pericak-Vance MA,Hauser SL,Oksenberg JRdoi
10.1007/s002510050621subject
Has Abstractpub_date
2000-04-01 00:00:00pages
281-8issue
4-5eissn
0093-7711issn
1432-1211journal_volume
51pub_type
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