ASD autism spectrum disorders BDNF brain-derived neurotrophic factor CDC US Centers for Disease Control and Prevention DAT dopamine transporter GABRA1 gamma-aminobutyric acid type A receptor subunit alpha1 GWAS genome-wide association studies ID intellectual disability IL-4 interleukin-4 NSF N-ethylmaleimide-sensitive fusion protein PAFR platelet-activating factor receptor PSD-95 postsynaptic density protein 95 TH tyrosine hydroxylase VPA valproic acid Autism spectrum disorder (ASD) is a...