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Tumor Biology

, Volume 37, Issue 1, pp 1009–1015 | Cite as

The 811 C/T polymorphism in the 3′ untranslated region of the selenoprotein 15-kDa (Sep15) gene and breast cancer in Caucasian women

  • Rafał Watrowski
  • Dan Cacsire Castillo-Tong
  • Gerhild Fabjani
  • Eva Schuster
  • Michael Fischer
  • Robert Zeillinger
Original Article

Abstract

The 15-kDa selenoprotein (Sep15) is a selenocysteine-containing oxidoreductase in the endoplasmic reticulum that participates in disulfide-bond formation and protein folding control. The 3′-untranslated region (3′-UTR) contains two exclusively linked, polymorphic sites at positions 811 (C/T) and 1125 (G/A), which result in two functional haplotypes: 811C/1125G or 811T/1125A. The 811T/1125A variant occurs significantly more often in African-Americans as compared to Caucasians and has been linked to increased breast cancer risk in black women. We studied the 811C/T (rs5845) Sep15 gene polymorphism in 182 Caucasian women—83 breast cancer cases and 99 healthy controls—by pyrosequencing and polymerase chain reaction. Associations between allelic variants and clinico-pathological variables (e.g., age, stage of disease, tumor type, grading, and receptor status) were investigated. The genotype distribution in breast cancer patients (CC 63.9 %, CT 33.7 %, TT 2.4 %) and controls (69.7 %, CT 28.3 %, TT 2 %) showed no significant difference (OR 0.77, 95 % CI 0.41–1.42, p = 0.4). The overall low prevalence of the T allele was in accordance with that reported for Caucasians in previous studies. There was no significant association between 811C/T Sep15 polymorphism and any of clinico-pathological parameters. In conclusion, we are the first to report on 811C/T SEP 15 polymorphism in white breast cancer patients. Genotype variation within the 3′-UTR of the SEP 15 gene showed no association with breast cancer risk or clinico-pathological parameters in Caucasian women.

Keywords

Selenoproteins Selenoprotein 15 Sep15 Breast cancer Polymorphism 

Notes

Acknowledgments

RW was supported by the Ernst Mach Grant of the Austrian Exchange Service (ÖAD) financed by the Austrian Ministry of Education, Science and Culture (BMBWK). We thank Eva Obermayr, PhD, Grazyna Dudek, and Ingrid Schiebel for their technical assistance.

Conflicts of interest

None

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Copyright information

© International Society of Oncology and BioMarkers (ISOBM) 2015

Authors and Affiliations

  • Rafał Watrowski
    • 1
    • 2
  • Dan Cacsire Castillo-Tong
    • 2
  • Gerhild Fabjani
    • 2
  • Eva Schuster
    • 2
  • Michael Fischer
    • 3
  • Robert Zeillinger
    • 2
  1. 1.Department of Gynecology and Obstetrics, St. JosefskrankenhausTeaching Hospital of the University of FreiburgFreiburgGermany
  2. 2.Department of Obstetrics and Gynecology, Molecular Oncology GroupMedical University of ViennaViennaAustria
  3. 3.Department of Blood Group Serology and Transfusion MedicineMedical University of ViennaViennaAustria

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