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Venn diagram of positive reactivity patterns of ACPA-IgG, cRF, ACPA-IgA RF-IgA individually as well as cross-reactivity patterns between these biomarkers.
The Venn diagram indicates that 31% (n=23) of RA patients had cRF and ACPA autoantibodies of both serotypes (IgG and IgA), while 48% (n=36) were positive for ACPA-IgG, cRF and RF-IgA, but not for ACPA-IgA.
