FOXP3 and rheumatoid arthritis: In addition, percentage (Median) of Foxp3 Treg cells were 3.07 ± 1.57, 2.35 ± 1.85, 2.09 ± 1.09, and 2.64 ± 1.23 in patients with DAS28 score < 2.6 (remission), ≥ 2.6–3.2 (low DAS28 score), ≥ 3.2–5.0 (moderate DAS28 score; active RA), and ≥ 5.1 (high DAS28 score; active RA), respectively.