FCRL6 and rheumatoid arthritis: When the stratification analysis by age was conducted, the results suggested that the C/T – T/T genotype of FCRL6 rs58240276 polymorphism was significant increased the risk of RA in the old group at age >  54 years in under the dominant model (OR = 1.54, 95% CI = 1.08–2.19, p = 0.016).