PRTN3 and rheumatoid arthritis: Similar to RF and ACPA, anti-carP antibodies have been reported to be associated with subclinical atherosclerosis measured as brachial artery Flow-Mediated Dilatation (FMD), cIMT, and arterial stiffness by the Ankle-Brachial Index and Cardio-Ankle Vascular Index in RA patients [113], although the confounding role of other autoantibodies and disease activity has yet to be considered.