Table 3. Allele frequency and genotype analysis of PTPN22 620W polymorphism in patients with AAU and healthy controls.

PTPN22	AAU patients (n=140)	Controls (n=92)	p value
Allele Frequency
C	0.93	0.90	0.2
T	0.07	0.10
Genotypes
CC	123	75	ns
CT	14	16
TT	2	1

There was no significant differences in haplotype or genotype frequency between patients with AAU and healthy controls. ns=not significant.