Helicobacter pylori, Homologous-Recombination Genes, and Gastric Cancer

Yoshiaki Usui1, Yukari Taniyama1, Mikiko Endo1

  • 1From the Laboratories for Genotyping Development (Y.U., M.E., Y.I., T.A., N.H., S.T., K. Suzuki, Y. Momozawa), Statistical and Translational Genetics (C.T.), and Cancer Genomics (H.N.), RIKEN Center for Integrative Medical Sciences, Yokohama, the Divisions of Cancer Information and Control (Y.U., Y.T., Y.N.K., H.I.) and Cancer Epidemiology and Prevention (Y. Kasugai, I.O., K. Matsuo), Department of Preventive Medicine, Aichi Cancer Center, the Divisions of Cancer Epidemiology (Y. Kasugai, K. Matsuo) and Descriptive Cancer Epidemiology (H.I.), Nagoya University Graduate School of Medicine, Aichi Cancer Center Research Institute (I.I.), and the Department of Endoscopy (T.T., M.T.), Aichi Cancer Center Hospital (Y.N.), Nagoya, the Department of Hematology, Oncology, and Respiratory Medicine, Okayama University Medical School, Okayama (Y.U.), the Laboratory of Microbial Carcinogenesis, Institute of Microbial Chemistry, Microbial Chemistry Research Foundation (M. Hatakeyama), the Department of Genetic Medicine and Services, National Cancer Center Hospital (M. Hirata, K. Sugano, T.Y.), the Division of Molecular Pathology, Department of Cancer Biology, Institute of Medical Science (M. Hirata, Y. Murakami), and the Laboratories of Complex Trait Genomics (Y. Kamatani) and Clinical Genome Sequencing (K. Matsuda), Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, University of Tokyo, and the Department of Genetic Medicine, Kyoundo Hospital, Sasaki Foundation (K. Sugano), Tokyo, and the Research Center of Infection-Associated Cancer, Institute for Genetic Medicine, Hokkaido University, Sapporo (M. Hatakeyama) - all in Japan; and the Population Health Program, QIMR (Queensland Institute of Medical Research) Berghofer Medical Research Institute, Brisbane, Australia (A.B.S.).

Summary

Helicobacter pylori infection significantly increases gastric cancer risk, especially when combined with germline pathogenic variants in homologous-recombination genes. Individuals with both factors face a substantially higher cumulative risk of developing gastric cancer.

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