the 76 prioritized risk genes. The B4GALT2-205 isoform located in the genome-wide significant locus on chromosome 1 showed the strongest association (P = 7 × 10−11), with lower predicted expression in ADHD compared to controls (Supplementary Fig. 7a). The expression model for B4GALT2-205 implicated four genome-wide significant variants. The second top gene was PPP1R16A (P = 1.4 × 10−8), which showed a predicted under-expression in cases compared to controls. The expression model for this gene implicated one genome-wide significant variant (Supplementary Fig. 7b).
