Abstract:
:Rheumatoid arthritis (RA) is an autoimmune/inflammatory disorder with a complex genetic component. We report the first major genomewide screen of multiplex families with RA gathered in the United States. The North American Rheumatoid Arthritis Consortium, using well-defined clinical criteria, has collected 257 families containing 301 affected sibling pairs with RA. A genome screen for allele sharing was performed, using 379 microsatellite markers. A nonparametric analysis using SIBPAL confirmed linkage of the HLA locus to RA (P < .00005), with lambdaHLA = 1.79. However, the analysis also revealed a number of non-HLA loci on chromosomes 1 (D1S235), 4 (D4S1647), 12 (D12S373), 16 (D16S403), and 17 (D17S1301), with evidence for linkage at a significance level of P<.005. Analysis of X-linked markers using the MLOD method from ASPEX also suggests linkage to the telomeric marker DXS6807. Stratifying the families into white or seropositive subgroups revealed some additional markers that showed improvement in significance over the full data set. Several of the regions that showed evidence for nominal significance (P < .05) in our data set had previously been implicated in RA (D16S516 and D17S1301) or in other diseases of an autoimmune nature, including systemic lupus erythematosus (D1S235), inflammatory bowel disease (D4S1647, D5S1462, and D16S516), multiple sclerosis (D12S1052), and ankylosing spondylitis (D16S516). Therefore, genes in the HLA complex play a major role in RA susceptibility, but several other regions also contribute significantly to overall genetic risk.
journal_name
Am J Hum Genetjournal_title
American journal of human geneticsauthors
Jawaheer D,Seldin MF,Amos CI,Chen WV,Shigeta R,Monteiro J,Kern M,Criswell LA,Albani S,Nelson JL,Clegg DO,Pope R,Schroeder HW Jr,Bridges SL Jr,Pisetsky DS,Ward R,Kastner DL,Wilder RL,Pincus T,Callahan LF,Flemming Ddoi
10.1086/319518subject
Has Abstractpub_date
2001-04-01 00:00:00pages
927-36issue
4eissn
0002-9297issn
1537-6605pii
S0002-9297(07)61420-7journal_volume
68pub_type
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