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The vast majority of RA patients produce autoantibodies, and immune cell involvement in disease development is well recognized, as is the contribution of other types of cells in synovial tissue, like fibroblasts. It is known that there are major genetic associations with the HLA locus, while multiple non-HLA genetic variants display relatively low risk of RA. Both HLA and non-HLA associations suggest that the profiles of genetic associations for autoantibody-positive vs. autoantibody-negative RA are different. Several alleles of<jats:italic>HLA-DRB1<\/jats:italic>are associated with high risk for autoantibody-positive RA, with the strongest risk characterized by valine at position 11 of the protein sequence (<jats:italic>HLA-DRB1<\/jats:italic>*04 and *10 alleles). There is a strong protective effect for the risk of autoantibody-positive RA associated with<jats:italic>HLA-DRB1<\/jats:italic>*13 alleles. Although major genetic associations have been known for several years, understanding of the specific mechanisms in the development of increased risk of RA for these variations is work in progress. Current studies focus on the binding of immune receptors involved in recognition of putative peptides in activation of T cells, as well as investigation of cell signaling mechanisms. At least a part of RA risk could be explained by gene\u2013gene and gene-environment interactions. There are currently more than 150 candidate loci with polymorphisms that associate with RA, mainly related to seropositive disease, and new discoveries are anticipated in the future from investigation of diverse human populations. This new research will help create a strong foundation for the continuing process of integrating genetic, epigenetic, transcriptomic, and proteomic data in studies of RA.<\/jats:p>","DOI":"10.1007\/s00281-022-00912-0","type":"journal-article","created":{"date-parts":[[2022,1,27]],"date-time":"2022-01-27T22:02:31Z","timestamp":1643320951000},"page":"47-62","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":192,"title":["Genetics of rheumatoid arthritis"],"prefix":"10.1007","volume":"44","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-2950-5670","authenticated-orcid":false,"given":"Leonid","family":"Padyukov","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2022,1,27]]},"reference":[{"issue":"5","key":"912_CR1","doi-asserted-by":"publisher","first-page":"669","DOI":"10.3899\/jrheum.200367","volume":"48","author":"KB Almutairi","year":"2021","unstructured":"Almutairi KB et al (2021) The prevalence of rheumatoid arthritis: a systematic review of population-based studies. 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