Figure 3From: Meta-analysis identified the TNFA -308G > A promoter polymorphism as a risk factor for disease severity in patients with rheumatoid arthritisRelative expression of the TNFA gene per genotype group. The GA genotype group (n = 15) and the AA genotype group (n = 2) were combined and compared to the GG genotype group (n = 49). No difference in TNFA expression was observed between the GG group and the GA+AA group (p = 0.420).Back to article page