AGBL2 and rheumatoid arthritis: Kudo-Tanaka and colleagues reported a higher mean level of anti-CCP2 (Axis-Shield Diagnostics Ltd., Dundee, Scotland, cut-off 4.6 U/ml for positive status) in patients developing RA (167 U/ml) than in patients developing other arthropathies or persistent UA (55 U/ml) in a study of 146 anti-CCP positive UA patients [32].