Noninvasive blood tests for fetal development predict gestational age and preterm delivery

Area of Science:

• Biochemistry
• Genetics
• Obstetrics

Background:

• Prenatal care relies on ultrasound, which is costly and cannot predict preterm birth.
• Spontaneous preterm birth is a leading cause of infant mortality worldwide.
• Noninvasive blood tests offer a potential advancement in prenatal diagnostics.

Purpose of the Study:

• To evaluate cell-free RNA (cfRNA) in maternal blood for predicting gestational age.
• To assess cfRNA's ability to predict spontaneous preterm birth.
• To explore cost-effective prenatal diagnostic tools for diverse settings.

Main Methods:

• Pilot study involving 31 healthy pregnant women to assess cfRNA for gestational age prediction.
• Second study with 38 high-risk pregnant women to identify cfRNA markers for preterm birth prediction.
• Analysis of nine cfRNA transcripts for gestational age and seven for preterm birth classification.

Main Results:

• cfRNA measurement accurately predicted gestational age, comparable to ultrasound but at lower cost.
• Seven cfRNA transcripts identified women delivering preterm up to two months in advance.
• The cfRNA blood tests demonstrated significant potential in pilot studies.

Conclusions:

• Noninvasive cfRNA blood tests show promise for improving prenatal care globally.
• These tests offer a more accessible and informative alternative to current methods.
• Further validation in larger clinical trials is necessary to confirm findings.