Apolipoprotein E genetic polymorphism, serum lipoprotein levels and breast cancer risk: A case-control study

  • Authors:
    • Gabriela Herrmann Cibeira
    • Juliana Giacomazzi
    • Ernestina Aguiar
    • Silvana Schneider
    • Betina Ettrich
    • Caroline Isoppo De Souza
    • Suzi Camey
    • Maira Caleffi
    • Bernardete Weber
    • Patricia Ashton-Prolla
    • Emilio Hideyuki Moriguchi
  • View Affiliations

  • Published online on: August 1, 2014     https://doi.org/10.3892/mco.2014.369
  • Pages: 1009-1015
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Abstract

The purpose of this study was to evaluate the association between apolipoprotein E (APOE) allelic frequency, serum lipoproteins and breast cancer (BC). We conducted a nested case-control study within a cohort including 47 cases and 165 controls. Polymerase chain reaction-restriction fragment length polymorphism analyses of the APOE polymorphism were performed. In general, participants with the genotype including alleles e2 and e3 tended to have lower serum triglycerides, total cholesterol and low‑density lipoprotein cholesterol levels and higher high‑density lipoprotein (HDL) cholesterol levels compared to participants homozygous for the e3 allele and participants heterozygous for the e3 and e4 alleles, respectively. BC patients exhibited higher mean levels of total serum cholesterol (p=0.070), dietary fat intake (p=0.020) and dietary cholesterol intake (p=0.017) compared to control subjects. The allelic distribution between the two groups revealed that the presence of the e2 allele was positively associated with the absence of BC, whereas the e4 allele was positively associated with the BC case group (p=0.019). The distribution of the APOE genotypes was not significantly different between cases and controls (p=0.172). The concomitant presence of the e2 and e4 alleles was positively associated with the absence of BC and e4/e4 homozygosity was positively associated with BC (p=0.021). Our findings suggested that APOE polymorphism plays an important role in the development of BC, particularly when associated with higher serum triglyceride levels.
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November-December 2014
Volume 2 Issue 6

Print ISSN: 2049-9450
Online ISSN:2049-9469

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Spandidos Publications style
Cibeira GH, Giacomazzi J, Aguiar E, Schneider S, Ettrich B, Isoppo De Souza C, Camey S, Caleffi M, Weber B, Ashton-Prolla P, Ashton-Prolla P, et al: Apolipoprotein E genetic polymorphism, serum lipoprotein levels and breast cancer risk: A case-control study. Mol Clin Oncol 2: 1009-1015, 2014
APA
Cibeira, G.H., Giacomazzi, J., Aguiar, E., Schneider, S., Ettrich, B., Isoppo De Souza, C. ... Moriguchi, E.H. (2014). Apolipoprotein E genetic polymorphism, serum lipoprotein levels and breast cancer risk: A case-control study. Molecular and Clinical Oncology, 2, 1009-1015. https://doi.org/10.3892/mco.2014.369
MLA
Cibeira, G. H., Giacomazzi, J., Aguiar, E., Schneider, S., Ettrich, B., Isoppo De Souza, C., Camey, S., Caleffi, M., Weber, B., Ashton-Prolla, P., Moriguchi, E. H."Apolipoprotein E genetic polymorphism, serum lipoprotein levels and breast cancer risk: A case-control study". Molecular and Clinical Oncology 2.6 (2014): 1009-1015.
Chicago
Cibeira, G. H., Giacomazzi, J., Aguiar, E., Schneider, S., Ettrich, B., Isoppo De Souza, C., Camey, S., Caleffi, M., Weber, B., Ashton-Prolla, P., Moriguchi, E. H."Apolipoprotein E genetic polymorphism, serum lipoprotein levels and breast cancer risk: A case-control study". Molecular and Clinical Oncology 2, no. 6 (2014): 1009-1015. https://doi.org/10.3892/mco.2014.369