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Related Experiment Video

Updated: Aug 27, 2025

A Novel Method for Involving Women of Color at High Risk for Preterm Birth in Research Priority Setting
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Before you call the midwife.

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Yuk Ming Dennis Lo received the 2022 Lasker Award for discovering fetal DNA in maternal blood. This breakthrough enabled noninvasive prenatal testing for conditions like Down syndrome.

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Area of Science:

  • Genetics
  • Molecular Biology
  • Clinical Medicine

Background:

  • Prenatal diagnosis traditionally involved invasive procedures with associated risks.
  • The presence of cell-free fetal DNA (cfDNA) in maternal circulation offered a potential non-invasive alternative.
  • Early research focused on identifying fetal genetic material within the maternal bloodstream.

Purpose of the Study:

  • To investigate the feasibility of detecting fetal genetic material in maternal blood.
  • To develop a noninvasive method for prenatal genetic screening.
  • To enable early detection of chromosomal abnormalities such as Down syndrome.

Main Methods:

  • Utilized advanced molecular techniques to isolate and analyze cell-free fetal DNA from maternal plasma.
  • Developed sensitive assays to detect specific fetal DNA sequences and chromosomal aneuploidies.
  • Validated the noninvasive prenatal testing (NIPT) method against traditional diagnostic techniques.

Main Results:

  • Successfully identified and characterized fetal DNA circulating in maternal blood.
  • Demonstrated the high accuracy of noninvasive prenatal testing in detecting Down syndrome and other trisomies.
  • Established the clinical utility of NIPT for widespread prenatal screening.

Conclusions:

  • The discovery of fetal DNA in maternal blood revolutionized prenatal diagnostics.
  • Noninvasive prenatal testing offers a safe and effective alternative to invasive procedures.
  • This advancement significantly improved the detection of fetal genetic disorders, enhancing maternal and child health outcomes.