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  1. Article

    Open Access

    Long-term follow-up of patients with anti-cyclic citrullinated peptide antibody-positive connective tissue disease: a retrospective observational study including information on the HLA-DRB1 allele and citrullination dependency

    The anti-cyclic citrullinated peptide (CCP) antibody is a diagnostic biomarker of rheumatoid arthritis (RA). However, some non-RA connective tissue disease (CTD) patients also test positive for the anti-CCP an...

    Takeshi Iwasaki, Shuichiro Nakabo, Chikashi Terao in Arthritis Research & Therapy (2020)