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

Table 1 HLA-DQB1 allele frequencies in Mexican patients with chronic gastritis according to H pylori status

DQB1*	H pylori +		H pylori -		Healthy
	n = 48		n = 32		n = 198
	n	af	n	af	n	af
*0401	11	0.229ab	2	0.062	0	0
*0301	10	0.208	5	0.156	34	0.171
*0302	7	0.145	11	0.343	48	0.242
*0501	5	0.104	1	0.031	12	0.060
*0201	3	0.062	4	0.125	33	0.166
*0304	2	0.034	0	0	1	0.005
*0602	1	0.017	1	0.031	15	0.075
*0601	1	0.017	3	0.093	0	0
*0603	1	0.017	0	0	4	0.020
*0604	1	0.017	0	0	3	0.015
*0303	1	0.017	1	0.031	0	0

af: Allele frequencies;

^aP = 0.04, vs H pylori -, OR = 4.46; 95% CI: 1.12-31.7;

^bP = 1 × 10^–7, vs healthy individuals, OR = 6.5, 95% CI: 4.73-8.54.