PRTN3 and rheumatoid arthritis: The same analysis in only RA- and UA-patients showed that ACPA+, RF+, anti-CarP- patients and ACPA+, RF+, anti-CarP+ patients had higher BME-scores than ACPA-, RF-, anti-CarP- patients (median 4.5 and 4.5 vs. 2.0 respectively, p < 0.001 and p < 0.001, Fig. 3).