Table 2. Genotype and allele frequencies of MPG genetic polymorphisms in RA patients (n = 365) and controls (n = 375).

	Patients, n (%)	Controls, n (%)	OR (95% CI)	P value
MPG-3644 (rs2858056)
CC	177 (48.5)	197 (52.5)	Ref	0.05
CG	135 (37.0)	145 (38.7)	1.04 (0.76–1.41)
GG	53 (14.5)	33 (8.8)	1.79 (1.11–2.89)
Allele frequency
Allele C	489 (67.0)	539 (71.9)	Ref	0.04
Allele G	241 (33.0)	211 (28.1)	1.26 (1.01–1.57)