Role of the HLA-DQ locus in the development of chronic gastritis and gastric carcinoma in Mexican patients

Table 2 HLA-DQA1 allele frequencies in Mexican patients with H pylori-associated chronic gastritis according to CagA status

DQA1*	CagA +		CagA -		Healthy
	n = 28		n = 20		n = 198
	n	af	n	af	n	af
*0501	15	0.535ab	2	0.100	45	0.227
*0401	5	0.178	6	0.300	33	0.166
*0301	4	0.142	6	0.300	51	0.257
*0101	1	0.035	3	0.150	20	0.101
*0201	1	0.035	1	0.050	22	0.111
*0303	1	0.035	0	0	0	0
*0102	1	0.035	1	0.050	17	0.085
*0103	0	0	0	0	5	0.040
*0104	0	0	2	0.100c	0	0
*0105	0	0	1	0.050	0	0
*0503	0	0	1	0.038	0	0
*0601	0	0	1	0.038	0	0
*0302	0	0	1	0.038	0	0

af: Allele frequencies;

^aP = 0.002, vs CagA-, OR = 10.38, 95% CI: 1.76-79.51;

^bP = 0.0005, vs healthy individuals, OR = 3.92, 95% CI: 1.62-9.55;

^cP = 0.008, vs CagA+ and healthy individuals, OR = 12; 95% CI: 7.71-18.68.