Table 2: Genotype frequencies of the 4 SNPs in ERAP1, IL23R and PTGER4 in the entire cohort (n=235).

SNP	Gene	Genotype	Frequency
rs27044	ERAP1	CC/ CG/ GG	0.48/ 0.46/ 0.06
rs30187	ERAP1	CC/ TC/ TT	0.33/ 0.51/ 0.16
rs11209032	IL23R	GG/ AG/ AA	0.31/ 0.45/ 0.24
rs10440635	PTGER4	GG/ AG/ AA	0.23/ 0.50/ 0.27