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The serotonin transporter gene (5-HTT) is considered as a candidate gene for BPD as multiple lines of evidence have suggested that it plays an important role in suicide, impulsive behaviour, and emotional liability.ompared with healthy controls, patients with BPD showed higher frequencies of the 10 repeat of the VNTR marker and the S-10 haplotype, and fewer 12 repeat and L A -12 haplotype. These results suggest that the serotonin transporter gene may play a role in the aetiology of BPD.
Some scientists think it plays a role in building the plaques in the brains of people with Alzheimerâs. Whether or not ApoE partly causes Alzheimer's, genes almost certainly play a role in the disease. Someone with a parent who had the disease is more likely to have it, too.