PMID- 25264289 OWN - NLM STAT- MEDLINE DCOM- 20151203 LR - 20220311 IS - 1814-1412 (Electronic) IS - 1562-2975 (Print) IS - 1562-2975 (Linking) VI - 16 IP - 3 DP - 2015 Apr TI - Investigation of the genetic interaction between BDNF and DRD3 genes in suicidical behaviour in psychiatric disorders. PG - 171-9 LID - 10.3109/15622975.2014.953011 [doi] AB - OBJECTIVES: Suicide is a serious public health concern, and it is partly genetic. The brain-derived neurotrophic factor (BDNF) gene has been a strong candidate in genetic studies of suicide (Dwivedi et al., Arch Gen Psychiatry 2010;60:804-815; Zai et al., Prog Neuropsychopharmacol Biol Psychiatry 2012;34:1412-1418) and BDNF regulates the expression of the dopamine D3 receptor. OBJECTIVE: We examined the role of the BDNF and DRD3 genes in suicide. METHODS: We analysed four tag single-nucleotide polymorphisms (SNPs) in BDNF and 15 SNPs in the D3 receptor gene DRD3 for possible association with suicide attempt history in our Canadian sample of Schizophrenia (SCZ) patients of European ancestry (N = 188). RESULTS: In this sample, we found a possible interaction between the BDNF Val66Met and DRD3 Ser9Gly SNPs in increasing the risk of suicide attempt(s) in our SCZ sample. Specifically, a larger proportion of SCZ patients who were carrying at least one copy of the minor allele at each of the Val66Met and Ser9Gly functional markers have attempted suicides compared to patients with other genotypes (Bonferroni P < 0.05). However, we could not replicate this finding in samples from other psychiatric populations. CONCLUSIONS: Taken together, the results from the present study suggest that an interaction between BDNF and DRD3 may not play a major role in the risk for suicide attempt, though further studies, especially in SCZ, are required. FAU - Zai, Clement C AU - Zai CC AD - Neurogenetics Section, Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health (CAMH) , Toronto, Ontario , Canada. FAU - Manchia, Mirko AU - Manchia M FAU - Sonderby, Ida Elken AU - Sonderby IE FAU - Yilmaz, Zeynep AU - Yilmaz Z FAU - De Luca, Vincenzo AU - De Luca V FAU - Tiwari, Arun K AU - Tiwari AK FAU - Squassina, Alessio AU - Squassina A FAU - Zai, Gwyneth C AU - Zai GC FAU - Shaikh, Sajid A AU - Shaikh SA FAU - Strauss, John AU - Strauss J FAU - King, Nicole AU - King N FAU - Le Foll, Bernard AU - Le Foll B FAU - Kaplan, Allan S AU - Kaplan AS FAU - Finseth, Per I AU - Finseth PI FAU - Vaaler, Arne E AU - Vaaler AE FAU - Djurovic, Srdjan AU - Djurovic S FAU - Andreassen, Ole A AU - Andreassen OA FAU - Vincent, John B AU - Vincent JB FAU - Kennedy, James L AU - Kennedy JL LA - eng GR - T32 MH076694/MH/NIMH NIH HHS/United States GR - T32MH076694/MH/NIMH NIH HHS/United States GR - CAPMC/CIHR/Canada PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20140929 PL - England TA - World J Biol Psychiatry JT - The world journal of biological psychiatry : the official journal of the World Federation of Societies of Biological Psychiatry JID - 101120023 RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (DRD3 protein, human) RN - 0 (Receptors, Dopamine D3) RN - 7171WSG8A2 (BDNF protein, human) SB - IM EIN - World J Biol Psychiatry. 2020 Dec;21(10):798. PMID: 32697128 MH - Adult MH - Brain-Derived Neurotrophic Factor/*genetics MH - Canada MH - Female MH - Genotype MH - Humans MH - Male MH - Middle Aged MH - *Polymorphism, Single Nucleotide MH - Receptors, Dopamine D3/*genetics MH - Risk Factors MH - Schizophrenia/*genetics MH - Suicide, Attempted/*psychology PMC - PMC4377309 MID - NIHMS655330 OTO - NOTNLM OT - brain-derived neurotrophic factor OT - dopamine receptor DRD3 OT - genetics OT - schizophrenia OT - suicide COIS- STATEMENT OF INTERESTS JLK: honoraria from Roche, Novartis, and Lilly. CCZ: honorium from WebMD for Medscape review. JLK & CCZ: patent application "Genetic Markers Associated with Suicide Risk and Methods of Use Thereof" submitted. OAA: received speaker's honoraria from GSK, Lilly, Otsuka, and Lundbeck. MM, IES, ZY, VdL, AKT, AS, GCZ, SAS, JS, NK, BLF, ASK, PIF, AEV, SD, and JBV reported no conflict of interest. EDAT- 2014/09/30 06:00 MHDA- 2015/12/15 06:00 PMCR- 2016/04/01 CRDT- 2014/09/30 06:00 PHST- 2014/09/30 06:00 [entrez] PHST- 2014/09/30 06:00 [pubmed] PHST- 2015/12/15 06:00 [medline] PHST- 2016/04/01 00:00 [pmc-release] AID - 10.3109/15622975.2014.953011 [doi] PST - ppublish SO - World J Biol Psychiatry. 2015 Apr;16(3):171-9. doi: 10.3109/15622975.2014.953011. Epub 2014 Sep 29.