ITGA1 polymorphisms and haplotypes are associated with gastric cancer risk in a Korean population

Figure 1 Haplotype linkage disequilibrium blocks and haplotype frequencies for ITGA1. A: Linkage disequilibrium (LD) blocks among ITGA1 polymorphisms. Black squares indicate a statistically significant allelic association between a pair of single nucleotide polymorphisms, as measured by the D statistic; darker gray indicate higher values of D; B: Haplotype frequencies of ITGA1 polymorphisms in cases (top) and controls (bottom).