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Risk for Gastric Cancer in People with CagA Positive or CagA Negative Helicobacter pylori Infection
Journal Article

Background & Aims: It is not known why some people with Helicobacter pylori infection develop gastric cancer whereas others do not. Whether the CagA phenotype of H pylori infection affected risk for cancer independently of other posited risk factors was evaluated.

Subjects: 242 persons who participated in a previous nested case-control study of gastric cancer. 179 (90 cases and 89 controls) were infected with H pylori as determined by enzyme linked immunosorbent assay (ELISA) in serum and 63 (13 cases and 50 controls) were uninfected.

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