Fig. 1
From: Abatacept reduces synovial regulatory T-cell expression in patients with psoriatic arthritis
Study design. Numbers of patients who underwent synovial and skin biopsies, and magnetic resonance imaging (MRI) in the abatacept (ABA) and placebo (PBO) study arms at each time point. *One patient was not randomized (screening visit and first MRI only). **Four patients were withdrawn from the study (two patients due to commitment issues (one in the 3Â mg/kg of body weight treatment arm and one in the PBO arm)