Figure 2From: DRD2 and PPP1R1B (DARPP-32) polymorphisms independently confer increased risk for autism spectrum disorders and additively predict affected status in male-only affected sib-pair familiesIllustration of the PPP1R1B locus. A schematic showing gene structure, marker positions and measures of linkage disequilibrium between rs1495099, rs907094 and rs3764352 listing r2 of the comparison group (N=435) followed by r2 of parents from families (N=216). Legend: ▪ exon; ━ intron; □ untranslated region.Back to article page