Fibroblast-like synoviocytes isolated from the knee and hip joints of patients with rheumatoid arthritis or osteoarthritis have now been shown to have site-specific DNA methylation signatures. Although preliminary, the data point towards a new view of joint involvement in arthritis.
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Ospelt, C., Frank-Bertoncelj, M. New insights into site-specific variations in RA and OA. Nat Rev Rheumatol 12, 506–507 (2016). https://doi.org/10.1038/nrrheum.2016.133
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DOI: https://doi.org/10.1038/nrrheum.2016.133