RegulomeDB score distribution of previously studied polymorphisms. RegulomeDB categories are shown on the x-axis; counts of SNPs falling into RegulomeDB score category are shown on the y-axis. Blue portion of the bar indicates the counts of SNPs that were tested but not reported significant; red portion shows the counts of SNPs that were reported significant at least once. Score descriptions are given below the image. 1b indicates eQTL + transcription factor (TF) binding + any motif + DNase footprint + DNase peak; 1d, eQTL + TF binding + any motif + DNase peak; 1f, eQTL + TF binding/DNase peak; 2a, TF binding + matched TF motif + matched DNase footprint + DNase peak; 2b, TF binding + any motif + DNase footprint + DNase peak; 2c, TF binding + matched TF motif + DNase peak; 3a, TF binding + any motif + DNase peak; 4, TF binding + DNase peak; 5, TF binding or DNase peak; 6, motif hit; 7, no evidence.