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Accelerated Biological Age as an Early Pregnancy Risk Factor for Preeclampsia
Nursing Research
|August 10, 2026
Summary
Accelerated biological aging, measured by Hannum's epigenetic clock in early pregnancy, predicts preeclampsia risk. This finding offers a new clinical biomarker for early detection and improved prenatal care.
Area of Science:
- Reproductive Medicine
- Genetics
- Biomarkers
Background:
- Preeclampsia prediction in early pregnancy remains a significant challenge in prenatal care.
- Current methods lack sufficient accuracy for early risk identification.
Purpose of the Study:
- To identify early pregnancy features predicting preeclampsia using machine learning.
- To specifically assess the influence of maternal biological age on preeclampsia development.
Main Methods:
- Analysis of two independent cohorts (Midwest and PEPP3) using prospective and public data.
- Quantification of DNA methylation (DNAm) from early pregnancy blood samples.
- Estimation of biological aging via epigenetic clocks (Hannum, Horvath, PhenoAge) and prediction modeling (LASSO, Random Forest).
Main Results:
- Accelerated biological aging (Hannum's clock), chronological age, and gestational weight gain predicted preeclampsia in the Midwest cohort.
- Hannum's epigenetic clock demonstrated predictive power for preeclampsia.
- Both accelerated biological aging (Hannum's clock) and chronological age were significant predictors in the PEPP3 cohort.
Conclusions:
- Accelerated biological aging in early pregnancy may serve as a valuable risk biomarker for preeclampsia.
- These findings highlight a potential clinical indicator for improved preeclampsia screening and early diagnosis.
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