TABLE 3.
Relationship between the structure of the cagA gene 3′ region and H. pylori-related diseases
| Strain type | Chronic gastritis (n = 50) | Gastric ulcer (n = 40) | Duodenal ulcer (n = 35) | Gastric cancer (n = 30) |
|---|---|---|---|---|
| A | 48 | 38 | 35 | 24 |
| B | 2 | 0 | 0 | 0 |
| C | 0 | 1 | 0 | 6a |
| D | 0 | 1 | 0 | 0 |
The percentage of type C strains was significantly higher in the gastric cancer group than in other groups (chronic gastritis, P < 0.005; gastric ulcer, P < 0.05; duodenal ulcer, P < 0.01).