Association study of a single nucleotide polymorphism in the hypoxia response element of the macrophage migration inhibitory factor gene promoter with suicide completers in the Japanese population

Background More than 800 000 people die by suicide annually. The heritability of suicide is 30%–50%. We focused on the hypoxia response element (HRE), which promotes the expression of macrophage migration inhibitory factor (MIF) via the hypoxia‐inducible factor (HIF) pathway, important in neurogenesis and neuroprotection. We examined a genetic polymorphism of rs17004038, a single‐nucleotide polymorphism (SNP), in suicide completers and controls. Methods The study population included 1336 suicide completers and 814 unrelated healthy controls. All participants were Japanese. We obtained peripheral blood, extracted DNA, and genotyped the patients for SNP rs17004038 (C > A). Results No significant differences were observed between the two groups in either the allele or genotype analyses. Subgroup analyses by sex, age (