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Molecular Biology Reports

, Volume 46, Issue 2, pp 2417–2425 | Cite as

EGF+61 A>G polymorphism is not associated with lung cancer risk in the Brazilian population

  • Ana Carolina Laus
  • Flavia Escremim de Paula
  • Marcos Alves de Lima
  • Carolina Dias Carlos
  • Izabela Natalia Faria Gomes
  • Pedro de Marchi
  • Jenna Kadja Neves Valente
  • Ana Beatriz Maringolo Pioltini
  • José Elias Miziara
  • Carlos Maciel da Silva
  • Luciano de Souza Viana
  • Cristovam Scapulatempo-Neto
  • Rui Manuel ReisEmail author
Original Article
  • 41 Downloads

Abstract

Epidermal growth factor (EGF) and its receptor (EGFR) play an important role in lung carcinogenesis. A functional single nucleotide polymorphism (SNP) in EGF promoter region (EGF+61 A>G—rs4444903) has been associated with cancer susceptibility. Yet, in lung cancer, the EGF+61 A>G role is unclear. The aim of this study was to evaluate the risk of lung cancer associated with EGF+61 A>G SNP in the Brazilian population. For that, 669 lung cancer patients and 1104 controls were analyzed. EGF+61 A>G genotype was assessed by PCR-RFLP and TaqMan genotyping assay. Both patients and controls were in Hardy–Weinberg equilibrium. As expected, uni- and multivariate analyses showed that tobacco consumption and age were significant risk factors for lung cancer. The genotype frequencies in lung cancer patients were 27.3% of AA, 47.4% of AG and 25.3% of GG, and for controls were 25.3% of AA, 51.6% of AG and 23.1% of GG. The allele frequencies were 51.1% of A and 48.9% of G for both cases and controls. No significant differences for the three genotypes (AA, AG and GG—codominant model) were observed between cases and controls. We then grouped AG and GG (recessive model) genotypes, as well as AA and AG (dominant model), and again, no significant differences were also found. This is the largest study to explore EGF+61 A>G polymorphism association with lung cancer risk and suggests that this SNP is not a risk factor for lung cancer in the Brazilian population.

Keywords

Lung cancer SNP Risk factor EGF+61 A>G polymorphism 

Notes

Acknowledgements

The authors would like to thank Barretos Cancer Hospital Research Support Department (NAP) for sample collection and Barretos Cancer Hospital Biobank for sample processing.

Funding

This study was partially supported by FINEP - CT-INFRA (02/2010) and Barretos Cancer Hospital Research Fund (PAIP).

Compliance with ethical standards

Conflict of interest

None of the authors have any financial or non-financial conflict of interests.

Ethical approval

All procedures performed in this study were in accordance with the ethical standards of the institutional and national research committee and with the 1964 Helsinki declaration or its later amendments or comparable ethical standards. The study was approved by Barretos Cancer Hospital Ethics Committee (#596/2012).

Informed consent

Signed informed consents were obtained from all control individuals and cases included in the study that provided blood samples. From the FFPE cases, due to the retrospective nature of the study, the Barretos Cancer Hospital Ethics Committee exempted informed consent.

Supplementary material

11033_2019_4702_MOESM1_ESM.docx (14 kb)
Supplementary material 1 (DOCX 13 KB)

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Copyright information

© Springer Nature B.V. 2019

Authors and Affiliations

  • Ana Carolina Laus
    • 1
  • Flavia Escremim de Paula
    • 1
  • Marcos Alves de Lima
    • 2
  • Carolina Dias Carlos
    • 1
  • Izabela Natalia Faria Gomes
    • 1
  • Pedro de Marchi
    • 3
  • Jenna Kadja Neves Valente
    • 3
  • Ana Beatriz Maringolo Pioltini
    • 3
  • José Elias Miziara
    • 4
  • Carlos Maciel da Silva
    • 4
  • Luciano de Souza Viana
    • 3
  • Cristovam Scapulatempo-Neto
    • 5
  • Rui Manuel Reis
    • 1
    • 6
    • 7
    Email author
  1. 1.Molecular Oncology Research CenterBarretos Cancer HospitalBarretosBrazil
  2. 2.Epidemiology and Biostatistics DepartmentBarretos Cancer HospitalBarretosBrazil
  3. 3.Medical Oncology DepartmentBarretos Cancer HospitalBarretosBrazil
  4. 4.Surgery DepartmentBarretos Cancer HospitalBarretosBrazil
  5. 5.Pathology DepartmentBarretos Cancer HospitalBarretosBrazil
  6. 6.Life and Health Sciences Research Institute (ICVS), School of MedicineUniversity of MinhoBragaPortugal
  7. 7.ICVS/3B’s – PT Government Associate LaboratoryBraga/GuimarãesPortugal

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