Study overview and MR model
All summary-level GWAS data were derived from participants of predominantly European ancestry. B2 is the causal association of interest (2,994 plasma proteins on three childhood neurodevelopmental disorders: ASD, ADHD, and TS), estimated using B2 =B1/B3. B1 and B3 are the direct associations of the genetic variants on the exposure (plasma proteins) and outcomes (ASD, ADHD, TS). IVW, inverse variance weighted.