The presence of both serotonin 1A receptor (HTR1A) and dopamine transporter (DAT1) gene variants increase the risk of borderline personality disorder.

Front Genet · 2014 · PMC3882668 · PMID 24432029

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did not reach statistical significanceno p-value reported

Two previous studies failed to find a positive link between the HTR1A G allele and BPD ( Serretti et al., 2007 ; Ni et al., 2009 ), and although our study did not reach statistical significance, individuals with the G,G genotype showed an increase risk of BPD.

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