Table 3.

Prevalence of different virulence factors in gastroduodenal diseases in Asian and Western populations

		Asian				Western
		Gastritis (n = 66)	GU (n = 64)	DU (n = 56)	GC (n = 69)	Gastritis (n = 113)	GU (n = 28)	DU (n = 54)	GC (n = 40)
hopQ	Type I	66 (100%)	64 (100%)	56 (100%)	67 (97.1%)	65 (57.5%)	21 (75.0%)	38 (70.4%)	27 (67.5%)
	Type II	0 (0.0%)	0 (0.0%)	0 (0.0%)	2 (29%)	48 (42.5%)	7 (25.0%)	16 (29.6%)	13 (32.5%)
vacA	s1m1	58 (87.9%)	57 (89.1%)	44 (78.6%)	66 (95.7%)	64 (56.6%)	18 (64.2%)	33 (61.1)	34 (85.0%)
	s1m2	8 (12.1%)	7 (10.9%)	12 (21.4%).	3 (4.3%)	20 (17.7%)	5 (17.9%)	11 (20.4%)	0 (0.0%)
	s2m2	0 (0.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	29 (25.7%)	5 (17.9%)	10 (18.5%)	6 (15.0%)
cagA	Present	66 (100%)	64 (100%)	54 (96.4%)	69 (98.7%)	85 (75.2%)	25 (89.3%)	47 (87.0%)	34 (85.0%)
	Absent	0 (0.0%)	0 (0.0%)	2 (3.5%)	1 (1.3%)	28 (24.8%)	3 (10.7%)	7 (13.0%)	6 (15.0%)
Combination
hopQ + vacA	Type I-s1m1	58 (87.9%)	57 (89.1%)	44 (78.6%)	64 (92.8%)	57 (50.4%)	18 (64.3%)	27 (50.0%)	27 (67.5%)
	Type II-s2m2	0 (0.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	27 (23.9%)	5 (17.9%)	9 (16.7%)	6 (15.0%)
	Others	8 (12.1%)	7 (10.9%)	12 (21.4%)	5 (7.2%)	29 (25.7%)	5 (17.9%)	18 (33.3%)	7 (17.5%)
hopQ + cagA	Type 1-positive	66 (100%)	64 (100%)	54 (96.4%)	67 (97.1%)	64 (56.6%)	21 (75.0%)	37 (68.5%)	27 (67.5%)
	Type II-negative	0 (0.0%)	0 (0.0%)	2 (3.8%)	0 (0.0%)	21 (18.6%)	4 (14.3%)	10 (18.5%)	7 (17.5%)
	Others	0 (0.0%)	0 (0.0%)	0 (0.0%)	2 (2.9%)	28 (24.8%)	3 (10.7%)	7 (13.0%)	6 (15.0%)
hopQ + vacA; cagA	Type I-s1m1-positive	58 (87.9%)	57 (89.1%)	43 (76.8%)	64 (92.8%)	57 (50.4%)	18 (64.3%)	27 (50.0%)	27 (67.5%)
	Type II-s2m2-negative	0 (0.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	26 (23.0%)	3 (10.7%)	6 (11.1%)	6 (15.0%)
	Others	8 (12.1%)	7 (10.9%)	13 (23.2%)	5 (7.2%)	30 (26.6%)	7 (25.0%)	19 (38.9%)	7 (17.5%)

DU, duodenal ulcer; GC, gastric cancer; GU, gastric ulcer.