Levels of anti-citrullinated protein antibodies and IgM rheumatoid factor are not associated with outcome in early arthritis patients: a cohort study.

Arthritis Res Ther · 2010 · PMC2875634 · PMID 20064278

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almost significantno p-value reported

Another study of 99 early RA patients reported a small, almost significant correlation between baseline serum ACPA levels and radiographic progression after five years [ 18 ].

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