Table 2 The distribution of H. pylori virulence factors by ethnicity
From: Helicobacter pylori virulence genes of minor ethnic groups in North Thailand
| Â | Ethnicity (number %) | ||||
|---|---|---|---|---|---|
Thai | Hmong | Karen | Thai-Chinese | Total | |
Cultured (N) | 77 | 53 | 15 | 7 | 152 |
vacA s1 | 76 (98.7) | 53 (100.0) | 15 (100.0) | 7 (100.0) | 151 (99.3) |
 m1 | 45 (58.4) | 31 (58.5) | 13 (86.7) | 2 (28.6) | 91 (59.9) |
 i1 | 75 (97.4) | 53 (100.0) | 15 (100.0) | 5 (71.4) | 148 (97.4) |
 d1 | 74 (96.1) | 53 (100.0) | 15 (100.0) | 6 (85.7) | 148 (97.4) |
 c1 | 44 (57.1) | 23 (43.4) | 12 (80.0) | 1 (14.3) | 80 (52.6) |
cagA positive | 75 (97.4) | 50 (94.3) | 15 (100.0) | 7 (100.0) | 147 (96.7) |
 East-Asian-type-cagA | 47 (62.7) | 48 (96.0) | 4 (26.7) | 6 (85.7) | 105 (71.4) |
 Western-type-cagA | 27 (36.0) | 2 (4.0) | 11 (73.3) | 1 (14.3) | 41 (27.9) |
Predominant upstream EPIYA motif | 74 | 50 | 15 | 7 | 146 |
 No-deletion | 30 (40.5) | 2 (4.0) | 11 (73.3) | 1 (14.3) | 44 (30.0) |
 18-bp deletion | 25 (33.8) | 27 (54.0) | 4 (26.7) | 2 (28.6) | 58 (40.0) |
 39-bp deletion | 19 (25.7) | 21 (42.0) | 0 (0.0) | 4 (57.1) | 44 (30.0) |
dupA negative | 60 (77.9) | 39 (73.6) | 15 (100.0) | 4 (57.1) | 118 (77.6) |
babA positive | 72 (93.5) | 52 (98.1) | 15 (100.0) | 6 (85.7) | 145 (95.4) |
iceA1 genotype | 59 (76.6) | 48 (96.0) | 8 (53.3) | 6 (85.7) | 121 (79.6) |
Jhp0562 positive, β-(1,3)gal T negative | 42 (54.5) | 40 (75.5) | 8 (53.3) | 6 (85.7) | 96 (63.2) |