Non-invasive Prediction of Fetal Growth Restriction by Whole-genome Promoter Profiling of Maternal Plasma DNA: a Nested Case-control Study
Overview
Affiliations
Objective: To predict fetal growth restriction (FGR) by whole-genome promoter profiling of maternal plasma.
Design: Nested case-control study.
Setting: Hospital-based.
Population Or Sample: 810 pregnancies: 162 FGR cases and 648 controls.
Methods: We identified gene promoters with a nucleosome footprint that differed between FGR cases and controls based on maternal plasma cell-free DNA (cfDNA) nucleosome profiling. Optimal classifiers were developed using support vector machine (SVM) and logistic regression (LR) models.
Main Outcome Measures: Genes with differential coverages in promoter regions through the low-coverage whole-genome sequencing data analysis among FGR cases and controls. Receiver operating characteristic (ROC) analysis (area under the curve [AUC], accuracy, sensitivity and specificity) was used to evaluate the performance of classifiers.
Results: Through the low-coverage whole-genome sequencing data analysis of FGR cases and controls, genes with significantly differential DNA coverage at promoter regions (-1000 to +1000 bp of transcription start sites) were identified. The non-invasive 'FGR classifier 1' (C 1) had the highest classification performance (AUC, 0.803; 95% CI 0.767-0.839; accuracy, 83.2%) was developed based on 14 genes with differential promoter coverage using a support vector machine.
Conclusions: A promising FGR prediction method was successfully developed for assessing the risk of FGR at an early gestational age based on maternal plasma cfDNA nucleosome profiling.
Tweetable Abstract: A promising FGR prediction method was successfully developed, based on maternal plasma cfDNA nucleosome profiling.
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