As shown in Fig. 3, one haplotype block extended distally across the gene and included seven SNPs from rs110402 to rs17689918 (listed in Table 1). There were five haplotypes with ≥0.05 frequency accounting for 85% of the haplotype diversity (Fig. S1). There were no haplotype or diplotype associations with suicidality, no G × E interactive effects and no SNP associations.