FCGR3B and rheumatoid arthritis: In contrast, FCGR3B#2 probe showed that most individuals (>80%) contained 2 copies of FCGR3B. High copy number (mainly 3 copies and few individuals with 4–5 copies) was present in 9.4% of controls and 11.7% of RA patients OR = 1.27, 95%CI = 0.74–2.2, P = 0.36.