4.6 Article

Assisted reproductive technology and neurodevelopmental outcomes in offspring: a prospective birth cohort study in East China

Journal

REPRODUCTIVE BIOMEDICINE ONLINE
Volume 46, Issue 6, Pages 983-994

Publisher

ELSEVIER SCI LTD
DOI: 10.1016/j.rbmo.2023.02.006

Keywords

Assisted reproductive technology; Infertility; Offspring neurodevelopmental outcome; Social behaviour skills

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This prospective cohort study compared the neurodevelopmental outcomes of 12-month-old infants born through assisted reproductive technology (ART) and natural conception. The study found no significant differences in gross motor, adaptive behavior, language, and total development quotient scores between the ART and natural conception groups. However, the ART group had slightly higher social behavior development quotient scores, especially in male or singleton infants. These findings provide new information for evaluating the potential benefits and risks of ART.
Research question: Is ART associated with adverse neurodevelopmental outcome in 12-month-old offspring compared with those conceived through natural conception?Design: In this prospective cohort study, 488 infertile women undergoing ART and 1397 women with natural conception were recruited and followed until their offspring were 12 months old. The primary outcome was the neurodevelopment in the offspring. The association between exposure to ART and Gesell developmental scale scores was investigated using multiple linear regression models after adjusting for confounders. Propensity score matching (PSM) and inverse probability of treatment weighting (IPTW) were used to verify the results.Results: In total, 18 (3.7%) and 40 (2.9%) children in the ART and natural conception groups, respectively, had been diagnosed with neurodevelopmental delay at 12 months of age. It was found that gross motor, adaptive behaviour, language and total development quotient scores were comparable between the groups. Following multivariate linear regression and IPTW, social behaviour development quotient scores were found to be slightly higher in the ART group than the natural conception group. Higher social behaviour development quotient scores in the ART group were also observed in the male and the singleton subgroups.Conclusions: At 12 months, offspring born after ART appeared to have similar motor, language and adaptive behaviour skills, and total development quotient scores, to those born after natural conception. However, social behaviour development in 12-month-old infants was slightly higher in those conceived using ART than in naturally conceived offspring, especially in male or singleton infants. These findings may provide new information in evaluating the potential benefits and risks of ART.

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