Antibodies against cyclic citrullinated peptides of IgG, IgA and IgM isotype and rheumatoid factor of IgM and IgA isotype are increased in unaffected members of multicase rheumatoid arthritis families from northern Sweden.

Ann Rheum Dis · 2012 · PMC3371219 · PMID 22128080

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highly significantno p-value reported

The sensitivity for all ACPA and RF isotypes was highly significant in the patients with RA compared with controls ( table 2 ).

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