Aim: Heparin-binding epidermal-growth-factor-like growth factor (HBEGF) plays an important role in placentation, including impaired placentation, the primary defect seen in pre-eclampsia. We carried out a case–control disease-association study to examine the association of single nucleotide polymorphisms (SNP) in the HBEGF gene and haplotypes defined by them with pre-eclampsia in a Sinhalese population in Sri Lanka.
Materials and Methods: A total of 175 women with pre-eclampsia and 171 matched normotensive controls were genotyped for six SNP selected in silico as having putative functional effects using mass array Sequenom iplex methodology and a newly designed polymerase chain reaction–restriction fragment length polymorphism assay.
Results: The individual SNP were not associated with pre-eclampsia. The haplotypes defined by them, however, showed both predisposing (rs13385T,rs2074613G,rs2237076G,rs2074611C,rs4150196A,rs1862176A; odds ratio, 1.65; 95% confidence interval 1.04–2.60; P = 0.032) and protective (rs13385C,rs2074613G,rs2237076A,rs2074611C,rs4150196A,rs1862176A; odds ratio, 0.20; 95% confidence interval, 0.04–0.89; P = 0.034) effects.
Conclusions: These results confirm that polymorphisms in the HGEGF gene are associated with pre-eclampsia. The haplotypes are likely to exert their effects through the numerous transcription regulation factors binding to the polymorphic sites, namely GATA-1, GATA-3, MZF-1 and AML-1a.
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