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Multiplex H. Pylori Serology and Risk of Gastric Cardia and Noncardia Adenocarcinomas Publisher Pubmed



Shakeri R1 ; Malekzadeh R1 ; Nasrollahzadeh D1, 2 ; Pawilta M3 ; Murphy G4 ; Islami F1, 5 ; Sotoudeh M1 ; Michel A3 ; Etemadi A1, 4 ; Waterboer T3 ; Poustchi H6 ; Brennan P7 ; Boffetta P8 ; Dawsey SM4 Show All Authors
Authors
  1. Shakeri R1
  2. Malekzadeh R1
  3. Nasrollahzadeh D1, 2
  4. Pawilta M3
  5. Murphy G4
  6. Islami F1, 5
  7. Sotoudeh M1
  8. Michel A3
  9. Etemadi A1, 4
  10. Waterboer T3
  11. Poustchi H6
  12. Brennan P7
  13. Boffetta P8
  14. Dawsey SM4
  15. Kamangar F1, 9
  16. Abnet CC4
Show Affiliations
Authors Affiliations
  1. 1. Digestive Oncology Research Center, Digestive Disease Research Institute, Tehran University of Medical Sciences, Tehran, Iran
  2. 2. Medical Epidemiology and Biostatistics, Karolinska Institute, Stockholm, Sweden
  3. 3. German Cancer Research Center, Heidelberg, Germany
  4. 4. Division of Cancer Epidemiology and Genetics, National Cancer Institute, 9609 Medical Center Drive, Bethesda, 20892, MD, United States
  5. 5. American Cancer Society, Atlanta, GA, United States
  6. 6. Digestive Diseases Research Center, Digestive Disease Research Institute, Tehran University of Medical Sciences, Tehran, Iran
  7. 7. International Agency for Research on Cancer, Lyon, France
  8. 8. Institute for Translational Epidemiology, Tisch Cancer Institute, Mount Sinai School of Medicine, New York, NY, United States
  9. 9. Department of Public Health Analysis, School of Community Health and Policy, Morgan State University, Baltimore, MD, United States

Source: Cancer Research Published:2015


Abstract

The reported associations with gastric adenocarcinoma and seropositivity to different Helicobacter pylori antigens using multiplex serology have not been consistent across studies. We aimed to investigate the association between 15 different multiplex serology antigens and the risk of gastric cardia (GCA) and gastric noncardia (GNCA) adenocarcinomas in northeastern Iran, a population with high rates of gastric adenocarcinoma. We included 272 cases of gastric adenocarcinoma (142 GCA, 103 GNCA, and 27 unspecified) and 524 controls who were individuallymatched to cases for age, sex, and place of residence in a population-based case-control study. Seropositivity to H. pylori was assessed using both multiplex serology and H. pylori IgG ELISA. Ninety-five percent of controls were seropositive to H. pylori. Of the 15 antibodies in the multiplex assay, 11 showed no significant association with gastric adenocarcinomas. CagA and VacA were associated with a significantly increased risk of all gastric adenocarcinoma and GNCA in multivariate models. Surprisingly, GroEL and NapA were significantly associated with a reduced risk of these tumors. Only CagA antigen was associated with significantly elevated risk of GCA. We found no associations between H. pylori seropositivity overall either by whole-cell ELISA test or multiplex serology, likely due to the high prevalence of seropositivity. Individual antigen testing showed that CagA positivity was associated with increased risk of both noncardia and cardia adenocarcinoma, which is similar to some other Asian populations, whereas two antigens were associated with lower risk of gastric cancer. This latter result was unexpected and should be retested in other populations. © 2015 AACR.
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