A case-control study on the effect of apoliprotein E genotype on head and neck cancer risk

Emma De Feo, Jessica Rowell, Gabriella Cadoni, Nicola Nicolotti, Dario Arzani, Arianna Giorgio, Rosarita Amore, Gaetano Paludetti, Gualtiero Ricciardi, Stefania Boccia

Research output: Contribution to journalArticle

Abstract

Background: The apolipoprotein E gene (apoE) has three major isoforms encoded by the ε2, ε3, and ε4 alleles, with the ε4 allele associated with hypercholesterolemia and the ε2 allele with the opposite effect. An inverse relationship between cholesterolemia and head and neck cancer (HNC) has been previously reported, although the relationship between apoE genotypes and HNC has not been explored to date. Methods: Four hundred and seventeen HNC cases and 436 hospital controls were genotyped for apoE polymorphisms. Adjusted odds ratios (ORs) and 95% confidence intervals (CI) from logistic regression were used to explore the relationship between HNC and putative risk factors. A gene-environment interaction analysis was done. Results: A borderline significant 40% decreased HNC risk (OR, 0.58; 95% CI, 0.31-1.05) was observed for individuals carrying at least one ε2 allele. Females carrying at least one ε2 allele showed a 60% risk reduction (OR, 0.43; 95% CI, 0.21-0.90) for HNC compared with ε3 homozygotes. A statistically significant interaction was found between alcohol use and the ε4 allele (P for interaction = 0.04), with a 2-fold increased risk (OR, 2.06; 95% CI, 0.95-4.48) among ever drinkers with an ε4 allele, with respect to ε3 homozygote nondrinkers. Conclusions: Our study provides novel evidence of a possible protective effect of the ε2 allele against HNC, probably due to its increased antioxidant properties. Impact: According to our results, apolipoprotein E may play a different role in carcinogenesis other than its well-known role in regulating blood serum cholesterol levels.

Original languageEnglish
Pages (from-to)2839-2846
Number of pages8
JournalCancer Epidemiology Biomarkers and Prevention
Volume19
Issue number11
DOIs
Publication statusPublished - Nov 2010

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Head and Neck Neoplasms
Case-Control Studies
Alleles
Genotype
Odds Ratio
Apolipoproteins E
Confidence Intervals
Homozygote
Genes
Gene-Environment Interaction
Risk Reduction Behavior
Hypercholesterolemia
Protein Isoforms
Carcinogenesis
Antioxidants
Logistic Models
Cholesterol
Alcohols
Serum

ASJC Scopus subject areas

  • Epidemiology
  • Oncology

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A case-control study on the effect of apoliprotein E genotype on head and neck cancer risk. / De Feo, Emma; Rowell, Jessica; Cadoni, Gabriella; Nicolotti, Nicola; Arzani, Dario; Giorgio, Arianna; Amore, Rosarita; Paludetti, Gaetano; Ricciardi, Gualtiero; Boccia, Stefania.

In: Cancer Epidemiology Biomarkers and Prevention, Vol. 19, No. 11, 11.2010, p. 2839-2846.

Research output: Contribution to journalArticle

De Feo, E, Rowell, J, Cadoni, G, Nicolotti, N, Arzani, D, Giorgio, A, Amore, R, Paludetti, G, Ricciardi, G & Boccia, S 2010, 'A case-control study on the effect of apoliprotein E genotype on head and neck cancer risk', Cancer Epidemiology Biomarkers and Prevention, vol. 19, no. 11, pp. 2839-2846. https://doi.org/10.1158/1055-9965.EPI-10-0624
De Feo, Emma ; Rowell, Jessica ; Cadoni, Gabriella ; Nicolotti, Nicola ; Arzani, Dario ; Giorgio, Arianna ; Amore, Rosarita ; Paludetti, Gaetano ; Ricciardi, Gualtiero ; Boccia, Stefania. / A case-control study on the effect of apoliprotein E genotype on head and neck cancer risk. In: Cancer Epidemiology Biomarkers and Prevention. 2010 ; Vol. 19, No. 11. pp. 2839-2846.
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AU - Rowell, Jessica

AU - Cadoni, Gabriella

AU - Nicolotti, Nicola

AU - Arzani, Dario

AU - Giorgio, Arianna

AU - Amore, Rosarita

AU - Paludetti, Gaetano

AU - Ricciardi, Gualtiero

AU - Boccia, Stefania

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AB - Background: The apolipoprotein E gene (apoE) has three major isoforms encoded by the ε2, ε3, and ε4 alleles, with the ε4 allele associated with hypercholesterolemia and the ε2 allele with the opposite effect. An inverse relationship between cholesterolemia and head and neck cancer (HNC) has been previously reported, although the relationship between apoE genotypes and HNC has not been explored to date. Methods: Four hundred and seventeen HNC cases and 436 hospital controls were genotyped for apoE polymorphisms. Adjusted odds ratios (ORs) and 95% confidence intervals (CI) from logistic regression were used to explore the relationship between HNC and putative risk factors. A gene-environment interaction analysis was done. Results: A borderline significant 40% decreased HNC risk (OR, 0.58; 95% CI, 0.31-1.05) was observed for individuals carrying at least one ε2 allele. Females carrying at least one ε2 allele showed a 60% risk reduction (OR, 0.43; 95% CI, 0.21-0.90) for HNC compared with ε3 homozygotes. A statistically significant interaction was found between alcohol use and the ε4 allele (P for interaction = 0.04), with a 2-fold increased risk (OR, 2.06; 95% CI, 0.95-4.48) among ever drinkers with an ε4 allele, with respect to ε3 homozygote nondrinkers. Conclusions: Our study provides novel evidence of a possible protective effect of the ε2 allele against HNC, probably due to its increased antioxidant properties. Impact: According to our results, apolipoprotein E may play a different role in carcinogenesis other than its well-known role in regulating blood serum cholesterol levels.

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