Are anti CCP3 the new anti CCP2 antibodies? Not yet! Anti-CCP3 associated w/ diagnosis of RA in a population of patients w/ MSK symptoms But… very strong overlap between CCP2 and 3 with only 3.4% positive for CCP3 negative for CCP2 @RheumNow #ACR23 ABST 0389 https://t.co/BHRqCbqEYw