Abstract Number: 508 • 2016 ACR/ARHP Annual Meeting
Before Clinically Detectable Arthritis Develops, ACPA-Positive and ACPA-Negative Arthralgia Patients Have Different Symptoms
Background/Purpose: Anti-citrullinated protein antibody (ACPA)-positive and ACPA-negative rheumatoid arthritis (RA) have different genetic risk factors and underlying biological mechanisms. Therefore, we hypothesized that patients’ characteristics…