ABO Blood Group, Helicobacter pylori Seropositivity, and Risk of Pancreatic Cancer: A Case-Control Study

Department of Epidemiology and Public Health, Yale University School of Medicine, 60 College St, PO Box 208034, New Haven, CT 06520-8034, USA.
Journal of the National Cancer Institute (Impact Factor: 12.58). 02/2010; 102(7):502-5. DOI: 10.1093/jnci/djq007
Source: PubMed


Carriage of a non–O ABO blood group and colonization by Helicobacter pylori are thought to be risk factors for pancreatic cancer. We examined these associations in a population-based case–control study
of 373 case patients and 690 control subjects frequency matched on sex and age. Control subjects were selected by random-digit
dialing. Seropositivity for H pylori and its virulence protein CagA was determined by enzyme-linked immunosorbent assay (ELISA). Increased risk of pancreatic
cancer was associated with non–O blood group (adjusted odds ratio [OR] = 1.37, 95% confidence interval [CI] = 1.02 to 1.83,
P = .034) and CagA-negative H pylori seropositivity (OR = 1.68, 95% CI = 1.07 to 2.66, P = .025), but no association was observed for CagA seropositivity (OR = 0.77, 95% CI = 0.52 to 1.16). An association between
pancreatic cancer risk and CagA-negative H pylori seropositivity was found among individuals with non–O blood type but not among those with O blood type (OR = 2.78, 95% CI
= 1.49 to 5.20, P = .0014; OR = 1.28, 95% CI = 0.62 to 2.64, P = .51, respectively). This study demonstrates an association between pancreatic cancer and H pylori colonization, particularly for individuals with non–O blood types.

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    • "Recent research has reawakened interest in several additional factors. Earlier studies have reported a higher association of pancreatic cancer with the non-O blood groups, compared to O (12-16). A report based on a large, prospective study involving almost one million subjects with years of follow-up showed a link between ABO blood type and pancreatic cancer (13). "
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    ABSTRACT: Several studies have reported that ABO blood group, hepatitis B virus (HBV) and hepatitis C virus (HCV) infection contribute to the development of pancreatic cancer. The aim of this study was to evaluate the association between these factors and pancreatic cancer in the Korean population. We retrospectively recruited 753 patients with pancreatic cancer and 3,012 healthy controls, matched 4 to 1 with cancer patients for age and sex, between 2001 and 2011, at the National Cancer Center, Korea. A multivariate logistic regression analysis was employed to estimate adjusted odds ratios (AORs). The AOR for pancreatic cancer in subjects with non-O blood types (A, AB, and B), compared to blood type O, was 1.29 (95% CI, 1.05-1.58; P = 0.01). Seropositivity for hepatitis B virus surface antigen was not significantly related to pancreatic cancer, either in univariate (odds ratio 1.03; 95% CI, 0.69-1.53; P = 0.91) or multivariate analysis (AOR, 1.02; 95% CI, 0.67-1.56; P = 0.93). The AOR for pancreatic cancer in subjects displaying seropositivity for anti-HCV was 2.30 (95% CI, 1.30-4.08; P < 0.01). Our results suggest that the non-O blood types and anti-HCV seropositivity, but not HBV infection, may increase the risk of developing pancreatic cancer in Korea, where HBV is endemic.
    Journal of Korean medical science 02/2013; 28(2):247-51. DOI:10.3346/jkms.2013.28.2.247 · 1.27 Impact Factor
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    • "Compared with blood group O, individuals with non-O blood group (type A, AB, or B) were significantly more likely to develop pancreatic cancer (adjusted hazard ratio for incident pancreatic cancer 1.32, 1.51. and 1.72, respectively)(Wolpin et al., 2009, Risch et al., 2010), probably based on genetic variants in ABO locus 9q34 (Amundadottir et al, 2009). Another extended study identified susceptibility loci on 3 chromosomes-13q22.1, "

    Pancreatic Cancer - Molecular Mechanism and Targets, 12/2011; , ISBN: 978-953-51-0410-0
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    • "Decreased COMT activity with resultant higher dopamine is associated with lower risks of hypertension and myocardial infarction as is ABO blood group B compared to group A [57–63,67–70]. As expected, given ABO group B's increased risk of pancreatic cancer, low expression of COMT is associated with pancreatic cancer [71] [72] [73] [74] [75]. And consistent with ABO group B increased risk of DVT, low COMT has increased risk of DVT [76] [77] [78] [79]. "
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    ABSTRACT: Personality trait research has shown associations with many genes, prominently those of the catecholamine metabolism such as dopamine beta hydroxylase (DBH), catechol-O-methyltransferase (COMT), and monoamine oxidase A (MAOA). Because DBH gene is in linkage disequilibrium with ABO gene, there is reason to think that other catecholamine genes using the same substrate as DBH may also have associations with ABO blood groups, and this paper demonstrates how this may be so. Reasons include similarities in hapmap population frequency distributions, similarities in illness risks between ABO blood groups and DBH activities as well as between ABO blood groups and COMT activities and between ABO blood groups and MAOA activities. If ABO blood groups can be demonstrated to associate with all these catecholamine genes, then the catecholamine personality trait research can be applied to ABO blood groups and tested for confirmation. ABO blood typing is widely available and affords ability to test this hypothesis and thus confirm the possible joint association of personality traits of aggression-submissiveness and perfectionism to catecholamine genes and to ABO blood groups. Clinical applications and implications are discussed.
    Medical Hypotheses 05/2011; 77(2):294-300. DOI:10.1016/j.mehy.2011.04.039 · 1.07 Impact Factor
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