Evaluation of pediatric epigenetic clocks across multiple tissues

Area of Science:

• Epigenetics
• Genomics
• Biotechnology

Background:

• Epigenetic clocks are emerging as powerful tools for estimating biological age.
• Accurate assessment of biological age is crucial in pediatric populations.

Purpose of the Study:

• To evaluate the accuracy of pediatric epigenetic clocks for determining gestational and chronological age.
• To compare the performance of various epigenetic clocks across different pediatric tissue types.

Main Methods:

• Analysis of DNA methylation data from seven tissue types using three microarrays.
• Comparative assessment of established pediatric epigenetic clocks.

Main Results:

• The Knight and Bohlin clocks demonstrated similar accuracy in blood cells.
• The Lee clock showed superior performance in placental samples.
• The pediatric-buccal-epigenetic clock was optimal for buccal samples.
• The Horvath clock is recommended for pediatric blood cells.
• The NeoAge clock accurately predicted post-menstrual age in infant buccal cells.

Conclusions:

• The study provides essential guidance for selecting appropriate epigenetic clocks in pediatric research.
• Findings facilitate more precise biological age assessments in children using epigenetic data.