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Updated: May 3, 2026
Assessment and Evaluation of the High Risk Neonate: The NICU Network Neurobehavioral Scale
Published on: August 25, 2014
Epigenetic analysis of neurocognitive development at 1 year of age in a community-based pregnancy cohort
Julia Krushkal1, Laura E Murphy, Frederick B Palmer
1Department of Preventive Medicine, University of Tennessee Health Science Center, Memphis, TN, 38163, USA, krushkal@gmail.com.
Insights
Epigenetic variations in neonatal umbilical cord blood DNA methylation show no strong link to cognitive development in infants. Further research is needed to understand epigenetic markers
Area of Science:
- Neuroscience
- Genetics
- Developmental Psychology
Background:
- Epigenetic modifications and genetic changes influence cognitive disability risk.
- The role of epigenetics in neurotypical child cognitive development is understudied.
Purpose of the Study:
- To investigate the association between DNA methylation patterns in neonatal umbilical cord blood and cognitive/language development at 1 year of age.
- To explore epigenetic variation's role in early neurocognitive development.
Main Methods:
- Prospective, community-based study of mother-infant pairs.
- Analysis of DNA methylation patterns in neonatal umbilical cord blood.
- Assessment of cognitive and language development using Bayley Scales of Infant and Toddler Development (Bayley-III) at 1 year.
Main Results:
- No CpG loci reached genome-wide significance for association with cognitive or language outcomes.
- A few weakly suggestive associations were observed with Bayley-III Receptive Communication scales.
Conclusions:
- Umbilical cord blood DNA methylation profiling did not yield conclusive epigenetic markers directly related to postnatal neurocognitive outcomes at 1 year.
- While umbilical cord blood is a useful resource for genetic studies, its utility for predicting early neurocognitive development via DNA methylation requires further investigation.
Abstract:
Multiple studies show that molecular genetic changes and epigenetic modifications affect the risk of cognitive disability or impairment. However, the role of epigenetic variation in cognitive development of neurotypical young children remains largely unknown. Using data from a prospective, community-based study of mother-infant pairs, we investigated the association of DNA methylation patterns in neonatal umbilical cord blood with cognitive and language development at 1 year of age. No CpG loci achieved genome-wide significance, although a small number of weakly suggestive associations with Bayley-III Receptive Communication scales were noted. While umbilical cord blood is a convenient resource for genetic analyses of birth outcomes, our results do not provide conclusive evidence that its use for DNA methylation profiling yields epigenetic markers that are directly related to postnatal neurocognitive outcomes at 1 year of age.
