Tehran University of Medical Sciences Iranian Journal of Public Health 2251-6085 48 10 2019 10 05 1855 1860 Zeinab TAVAKKOL AFSHARI Department of Immunogenetic and Cell Culture, Immunology Research Center, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran Zahra GHOLIZADEH Department of Immunogenetic and Cell Culture, Immunology Research Center, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran AND Department of Allergy and Immunology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran Amin Reza NIKPOOR Molecular Medicine Research Center, Hormozgan Health Institute, Hormozgan University of Medical Sciences, Bandar Abbas, Iran Jalil TAVAKKOL AFSHARI Department of Immunogenetic and Cell Culture, Immunology Research Center, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran AND Department of Allergy and Immunology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran Rashin GANJALI Department of Immunogenetic and Cell Culture, Immunology Research Center, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran Fatemeh HOMAEI SHANDIZ Cancer Research Center, Mashhad University of Medical Sciences, Mashhad, Iran Khadijeh JAMIALAHMADI Biotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran AND Department of Medical Biotechnology and Nanotechnology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran 2019 10 05 Background: The tumor protein p73 (TP73) is a homolog of TP53 family. Ectopic p73 overexpression largely mimics p53 activities as a tumor suppressor and activates the transcription of p53-responsive genes and as a result induce apoptosis. This study aimed to investigate the association between p73 G4A polymorphism and the risk of breast cancer in a northeastern Iranian population. Methods: This case-control study was performed on 105 patients who admitted in educational hospitals of Mashhad University of Medical Sciences, Iran during 2013-2015, with breast cancer as case group and 120 healthy women as the control group. PCR-CTPP method was used to investigate the relationship between the p73 G4A polymorphism and the risk of breast cancer. Results: There was no significant association between the AA genotype of the p73 G4A polymorphism and breast cancer in case and control groups. Although G allele frequency was higher in the case group, the abundance of this allele between case and control groups was not statistically meaningful and, as a result, not associated with the risk of breast cancer in this study group. Conclusion: There was no association between G4A p73 polymorphism and the risk of breast cancer in a northeastern Iranian population. https://ijph.tums.ac.ir/index.php/ijph/article/view/18545 https://ijph.tums.ac.ir/index.php/ijph/article/download/18545/6538