PRTN3 and rheumatoid arthritis: In a cross-sectional study of 135 seropositive RA patients with no history of cardiovascular disease, plasma levels of anti-modified citrullinated vimentin (anti-MCV) antibodies were found to correlate inversely with left ventricular ejection fraction, with a stronger negative correlation (p < 0.001) than that observed for general ACPA (p = 0.019).