ASSOCIATION OF NFKB1, NKX2-5, GATA4 AND RANKL GENE POLYMORPHISMS WITH SPORADIC CONGENITAL HEART DISEASE IN GREEK PATIENTS
Aidinidou L1, Chatzikyriakidou A1, Giannopoulos A2, Karpa V1, Tzimou I2, Aidinidou E3, Fidani L1,*
*Corresponding Author: Professor Liana Fidani, Department of General Biology, Medical School, Aristotle University of Thessaloniki, University Campus, GR-54124, Thessaloniki, Greece. Tel.: +30- 231-099-9165. Fax: +30-231-099-9019. E-mail: sfidani@auth.gr
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Abstract

Congenital heart disease (CHD) is a group of structural defects of the heart and the great vessels, and one of the leading causes of death among infants and young adults. Several gene variants are involved in diverse mechanisms of cardiac and vessel development and could thus be considered candidate mutated genes for a congenital heart defect or a specific variant could predispose a person to CHD. In the present study, variants in four such genes are investigated for the first time in a group of young Greek CHD patients: the NFKB1 gene polymorphism (94ins/ delATTG), rs28362491, NKX2-5 gene polymorphism rs2277923, GATA4 gene polymorphism rs11785481 and RANKL gene polymorphism rs4531631. A total of 43 CHD patients and 100 healthy adults were included in the study. The polymerase chain reaction-restriction fragment length polymorphism (PRC-RFLP) method was used to genotype the aforementioned polymorphisms of NFKB1, NKX2-5, GATA4 and RANKL. The association analysis identified that there was a protective association between CHD and the A allele of rs2277923 polymorphism (p = 0.004). The D allele of the rs28362491 polymorphism is also a likely risk factor for causing CHD (p = 0.006). The differences of the rs4531631 and rs11785481 variant contribution had no statistical significance between the groups (p >0.05). In conclusion, our results revealed that the rs28362491 and rs2277923 gene polymorphisms, but not the rs4531631 and rs11785481 polymorphisms, may contribute to CHD risk in a cohort of Greek CHD patients.



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