Abstract
Psychopathic traits can lead to violence, making it a serious public health concern. Genetic factors contribute to the aetiology of psychopathy. We examined whether monoamine oxidase A (MAOA-uVNTR) was associated with psychopathic traits measured quantitatively from controls through clinically aggressive youth (n = 336). Subjects were sub-categorized into at or above, and below age 13 years. Results reveal that males below age 13 were more likely to display psychopathic traits with the MAOA long variant, whereas males above age 13 years were more likely to display with the short variant. This suggests that developmental factors may be crucial for understanding the role of the MAOA polymorphism in psychopathic traits in males.
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This research was supported by the Howitt/Dunbar Foundation, CAMH Foundation, CAMH Discovery Fund Post-Doctoral Fellowship (EK) and Institute of Medical Science Entrance Award (TK).
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JLK is an unpaid member of the Scientific Advisory Board of Myriad Neurosciences Inc., and is author on patents for pharmacogenetic interventions.
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The study was approved by the Research Ethics Board at Centre for Addiction and Mental Health.
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Kant, T., Koyama, E., Zai, C.C. et al. Association of the MAOA-uVNTR polymorphism with psychopathic traits may change from childhood to adolescence. Eur Arch Psychiatry Clin Neurosci 272, 1517–1521 (2022). https://doi.org/10.1007/s00406-021-01370-9
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DOI: https://doi.org/10.1007/s00406-021-01370-9