Figure 1

Distribution (probability density function) of associated (colored) and unassociated (black) SNP-CpG pairs by absolute distance in each cohort. Plot indicates that while the distance is roughly uniformly distributed between 0–50 kb for most pairs of SNPs and CpGs compared (black), the distance tends to be shorter (< 10 kb) for pairs where a meQTL was identified. Abbreviations: CB B: cord blood B, TCTX: temporal cortex, FCTX: frontal cortex, PONS: pons, CRBLM: cerebellum, CB A: cord blood A, and PB: peripheral blood.