Association between a TCF4 Polymorphism and Susceptibility to Schizophrenia

Figure 1

Linkage disequilibrium (LD) plots of the four SNPs of the basic helix-loop-helix (bHLH) transcription factor 4 (TCF4) gene. The values in the squares are the pairwise calculations of r² (a) or D′ (b). The pink squares with “39,” for example, indicate D′ = 0.39 (i.e., low LD between a pair of SNPs). The white squares with the “0” indicate r² = 0 (i.e., no LD between a pair of SNPs).

(a)

(b)