NEW YORK, Nov. 29 – DeCode Genetics of Reykjavik, Iceland, said Thursday it had mapped a gene with “significant linkage” to rheumatoid arthritis.

DeCode said it identified the gene by studying more than 2,500 volunteers afflicted with the disease and their relatives from more than 100 families across Iceland. Data from the genome-wide study of the participants were then analyzed, leading to the finding of a genetic locus that is associated with additional risk of rheumatoid arthritis. 

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