Angiogenic pathway regulating genes such as vascular endothelial growth factor A (VEGFA) have been implicated in preterm birth (PTB) complications. Research shows that the VEGFA/VEGF receptor system plays an important role in the regulation of circulating progesterone level. Attenuation of VEGFA signaling at mid pregnancy results in onset of labor and parturition because of a reduction in circulating progesterone levels. The aim of this study was to investigate the association of VEGFA gene polymorphisms (rs2010963, rs3025039, rs699947, and rs10434) with spontaneous PTB and VEGFA plasma levels in preterm and term women.
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