Predictive value of prenatal screening markers combined with serum placental growth factor in early pregnancy for preeclampsia

Abstract

Objective: To observe the predictive value of prenatal screening markers combined with serum placental growth factor(PLGF) in early pregnancy for preeclampsia(PE). Methods: This was a prospective study. A total of 369 pregnant women undergoing early pregnancy examinations were selected at Jingmen Central Hospital from August 2024 to January 2025 and divided into the PE group(n=43) and the normal group(n=326) according to the presence of PE during the follow-up. The levels of prenatal screening markers alpha-fetoprotein(AFP), serum PLGF, β-human chorionic gonadotropin(β-hCG) and pregnancy-associated plasma protein-A(PAPP-A) were compared between the two groups. Results: There were 43 patients experiencing PE, with an incidence of 11.65%. The levels of PLGF, β-hCG and PAPP-A were significantly decreased in the PE group compared with those in the normal group, and the differences between the groups were statistically significant (all P<0.05). Logistic regression analysis showed that increased prenatal screening markers AFP, serum PLGF, HCG and PAPP-A were independent risk factors for PE, with statistically significant differences between the groups (all P<0.05). Finally, the results of ROC curve analysis showed that the AUCs of AFP, PLGF, β-hCG and PAPP-A were 0.618, 0.645, 0.690, and 0.645, respectively, and the AUC of combined prediction was 0.825, which was significantly increased compared with that of each marker alone, with statistically significant differences(P<0.05). Conclusion: The development of PE in pregnancy is closely related to the levels of AFP, PLGF, β-hCG and PAPP-A. The predictive efficiency of combined detection of AFP, PLGF, β-hCG and PAPP-A for PE in pregnancy significantly increases.