OXTR DNA Methylation and Temperament Relationship Investigated in Children with Neurodevelopmental Disabilities

Neurodevelopmental disabilities (NDs) often present with challenges in socio-emotional functioning and temperament. Oxytocin, a neuropeptide crucial for social bonding and emotional regulation, plays a significant role in these processes. The oxytocin receptor gene (OXTR), specifically its DNA methylation (DNAm), has been linked to individual differences in socioemotional traits and temperament in the general population. However, the precise role of OXTR DNAm in shaping temperament within the context of NDs remains largely unexplored, representing a critical gap in understanding the biological underpinnings of these complex conditions.

This observational study aimed to explore the relationship between maternal OXTR DNAm and temperament in children with neurodevelopmental disabilities. Researchers collected saliva samples from mothers to assess OXTR DNAm levels using direct bisulfite sequencing. Maternal DNAm was measured at two distinct time points: when infants were 3 months old and again at 6 months old. The abstract snippet does not detail the assessment methods for child temperament, the total sample size (n), or specific inclusion/exclusion criteria for the children with NDs.