Circulating trophoblast cell clusters for early detection of placenta accreta spectrum disorders

Nat Commun. 2021 Aug 3;12(1):4408. doi: 10.1038/s41467-021-24627-2.

Abstract

Placenta accreta spectrum (PAS) is a high-risk obstetrical condition associated with significant morbidity and mortality. Current clinical screening modalities for PAS are not always conclusive. Here, we report a nanostructure-embedded microchip that efficiently enriches both single and clustered circulating trophoblasts (cTBs) from maternal blood for detecting PAS. We discover a uniquely high prevalence of cTB-clusters in PAS and subsequently optimize the device to preserve the intactness of these clusters. Our feasibility study on the enumeration of cTBs and cTB-clusters from 168 pregnant women demonstrates excellent diagnostic performance for distinguishing PAS from non-PAS. A logistic regression model is constructed using a training cohort and then cross-validated and tested using an independent cohort. The combined cTB assay achieves an Area Under ROC Curve of 0.942 (throughout gestation) and 0.924 (early gestation) for distinguishing PAS from non-PAS. Our assay holds the potential to improve current diagnostic modalities for the early detection of PAS.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Biomarkers / blood
  • Cell Aggregation
  • Cohort Studies
  • Diagnosis, Differential
  • Female
  • Humans
  • Lab-On-A-Chip Devices
  • Maternal Serum Screening Tests / instrumentation
  • Maternal Serum Screening Tests / methods*
  • Middle Aged
  • Nanostructures
  • Placenta Accreta / blood
  • Placenta Accreta / diagnosis*
  • Placenta Previa / blood
  • Placenta Previa / diagnosis
  • Pregnancy
  • ROC Curve
  • Reproducibility of Results
  • Trophoblasts / pathology*

Substances

  • Biomarkers