Changes in circulating level of angiogenic factors from the first to second trimester as predictors of preeclampsia

Lars J Vatten, Anne Eskild, Tom I L Nilsen, Stig Jeansson, Pål A Jenum, Anne Cathrine Staff
American Journal of Obstetrics and Gynecology 2007, 196 (3): 239.e1-6

OBJECTIVE: This study was undertaken to assess changes in placenta growth factor and soluble fms-like tyrosine kinase-1 as predictors of preeclampsia.

STUDY DESIGN: Nested case-control study of 154 preeclampsia cases delivered preterm and 190 delivered at term, and 392 controls.

RESULTS: Comparing the lowest and highest quartile of placenta growth factor increase from first to second trimester, the odds for preterm preeclampsia was 13.8 (95% CI, 4.4-43.2) higher for women with the lowest increase. Compared with controls, women with preterm preeclampsia had lower soluble fms-like tyrosine kinase-1 in the first, but higher in second trimester. Comparing highest and lowest quartile of increase, the odds for preterm preeclampsia was 9.2 (95% CI 3.4-25.0) higher for women with highest increase. Low placenta growth factor and high soluble fms-like tyrosine kinase-1 increase combined yielded extremely high relative risk of preterm preeclampsia (odds ratio, 35.3, 95% CI, 7.6-164.2), compared with the combination of high (placenta growth factor) and low (soluble fms-like tyrosine kinase-1) increase.

CONCLUSION: Low placenta growth factor and high soluble fms-like tyrosine kinase-1 increase from first to second trimester are strong predictors of preeclampsia.

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