Meanwhile, white blood cell count (WBC, 7.3 ± 2.9 vs. 15.9 ± 27.7, P = 0.046), CRP (3.6 ± 5.0 vs. 5.5 ± 5.4, P = 0.049), RF positive (60.9% vs. 3.2%, P < 0.001), AKA positive (43.5% vs. 0.0%, P < 0.001), anti-CCP Ab positive (65.2% vs. 6.5%, P < 0.001), and ANCA positive (52.2% vs. 16.1%., P = 0.007) were statistically different between RA and PMR. The gene discussed is CRP; the disease is rheumatoid arthritis.