LD plots at <i>TNFSF4</i> locus in four populations.

<p>This section of chromosome 1q25.1 encompasses the <i>TNFSF4</i> gene and upstream region as defined by custom algorithm in Haploview 4.2. The measure of LD was used to depict 57 SNPs common to all cohorts, post QC and 1000 genomes imputation. The pair-wise correlations between <i>TNFSF4</i> markers is illustrated in these plots by the correlation coefficient R²(where r² = 0 = no correlation, white; 02<1, gradations of grey; R² = 1 = complete correlation, black). The <i>TNFSF4</i> gene is positioned above the plots relative to haplotype blocks (black triangles) and grey ticks indicate SNP locations to scale.