Obesity

Placental Gene Expression Associated With Early Childhood Growth Trajectories and Obesity Risk

Obesity (Silver Spring)Published Prospective cohort study

Authors' conclusion

This study identified placental gene expression associated with early childhood growth outcomes. These findings suggest the potential important role of placental immune system genes in the development of childhood obesity.

Study context

Population
Children from the CANDLE (Conditions Affecting Neurocognitive Development and Learning in Early Childhood) study with placental samples at delivery
Participants
794 children
Outcome
BMI trajectories from birth to 4 years (rising-high-, moderate-, low-BMI) and overweight/obesity at 4 years
Follow-up
4 years
Methodological detailsplacental RNA sequencing, Mendelian randomization
  • Placental RNA sequencing
  • Mendelian randomization

Main finding

As reported in the abstract

Placental DEGs associated with childhood outcomes

Differentially expressed genes (DEGs) associated with BMI trajectories (false discovery rates (FDR) < 0.05)

22

DEGs associated with overweight/obesity (FDR < 0.05)

23

Biological pathways identified, primarily related to the immune system

26

Observational data: associations, not effects.

Further findings

Mendelian randomization (MR) analysis of DEGs (FDR < 0.05)

DEGs possibly causally associated with BMI trajectories (SSX2B)
1
DEGs possibly causally associated with overweight/obesity (e.g., HSPA1A, DNAJB1)
8

Original publication

Placental Gene Expression Associated With Early Childhood Growth Trajectories and Obesity Risk. Obesity (Silver Spring). Published 25 July 2025. doi:10.1002/oby.70000

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