S100A8 and gastric cancer: CagA-positive H. pylori with two EPIYA-C motifs was more frequently detected in patients with ulcers and gastric cancer (64.1% and 54.6%, respectively), Table 3, Figure 1C. The results were confirmed by sequencing a ~650- to ~850-bp fragment within the 3′ variable region of the cagA gene in 20 randomly selected samples.