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Association between TPH1 polymorphisms and the risk of suicide behavior: An updated meta-analysis of 18,398 individuals

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Title: Association between TPH1 polymorphisms and the risk of suicide behavior: An updated meta-analysis of 18,398 individuals
Authors: Alma Delia Genis-Mendoza, Yazmín Hernández-Díaz, Thelma Beatriz González-Castro, Carlos Alfonso Tovilla-Zárate, Rosa Giannina Castillo-Avila, María Lilia López-Narváez, Miguel Ángel Ramos-Méndez, Humberto Nicolini
Source: Frontiers in Psychiatry, Vol 13 (2022)
Publisher Information: Frontiers Media S.A., 2022.
Publication Year: 2022
Collection: LCC:Psychiatry
Subject Terms: tryptophan hydroxylase, meta-analysis, suicide behavior, polymorphism, risk allele, Psychiatry, RC435-571
More Details: ObjectivesWe aimed to examine the association of TPH1 polymorphisms with the risk of suicide behavior (SB).DesignSystematic review and meta-analysis.MethodAll relevant studies that evaluated the association between the A218C (rs1800532), A779C (rs1799913) and A6526G (rs4537731) polymorphisms and the susceptibility to SB published up to September 2021 were identified through a comprehensive systematic search in PubMed, Scopus, EBSCO and Science Direct electronic databases. The association between TPH1 gene polymorphisms and SB was evaluated using inherence models by odds ratio (OR) and 95% confidence interval (CI). Subgroup analyses, heterogeneity analyses, and publication bias were also tested in this meta-analysis.ResultsThe meta-analysis for TPH1 A218C revealed an increased risk of SB in the dominant model (OR = 1.11, 95%CI 1.01–1.22). We also observed a positive association in the allelic (OR = 1.13, 95%CI 1.05–1.21), homozygous (OR = 1.22, 95%CI 1.06–1.40), heterozygous (OR = 1.21, 95%CI 1.08–1.37) and dominant (OR = 1.21, 95%CI 1.09–1.34) inherence models with the suicide attempt. Additionally, in the heterozygous (OR = 0.84, 95%CI 0.73–0.97) and dominant (OR = 0.79, 95%CI 0.68–0.91) inherence models we detected an association with completed suicide. Based on ethnicity, an association of SB in the European population also was observed (OR = 1.29, 95%CI 1.12–1.51). However, for both A779C and A6526G polymorphisms we did not find evidence of an association with SB.ConclusionThis meta-analysis suggests that the A218C polymorphism of TPH1 gene could be a possible risk factor of SB. Future large-scale studies are required to analyze the molecular mechanisms by which affect the susceptibility of developing suicide behavior.
Document Type: article
File Description: electronic resource
Language: English
ISSN: 1664-0640
Relation: https://www.frontiersin.org/articles/10.3389/fpsyt.2022.932135/full; https://doaj.org/toc/1664-0640
DOI: 10.3389/fpsyt.2022.932135
Access URL: https://doaj.org/article/d949bb0bbb454400b1c70270fb5a3f3a
Accession Number: edsdoj.949bb0bbb454400b1c70270fb5a3f3a
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  Data: ObjectivesWe aimed to examine the association of TPH1 polymorphisms with the risk of suicide behavior (SB).DesignSystematic review and meta-analysis.MethodAll relevant studies that evaluated the association between the A218C (rs1800532), A779C (rs1799913) and A6526G (rs4537731) polymorphisms and the susceptibility to SB published up to September 2021 were identified through a comprehensive systematic search in PubMed, Scopus, EBSCO and Science Direct electronic databases. The association between TPH1 gene polymorphisms and SB was evaluated using inherence models by odds ratio (OR) and 95% confidence interval (CI). Subgroup analyses, heterogeneity analyses, and publication bias were also tested in this meta-analysis.ResultsThe meta-analysis for TPH1 A218C revealed an increased risk of SB in the dominant model (OR = 1.11, 95%CI 1.01–1.22). We also observed a positive association in the allelic (OR = 1.13, 95%CI 1.05–1.21), homozygous (OR = 1.22, 95%CI 1.06–1.40), heterozygous (OR = 1.21, 95%CI 1.08–1.37) and dominant (OR = 1.21, 95%CI 1.09–1.34) inherence models with the suicide attempt. Additionally, in the heterozygous (OR = 0.84, 95%CI 0.73–0.97) and dominant (OR = 0.79, 95%CI 0.68–0.91) inherence models we detected an association with completed suicide. Based on ethnicity, an association of SB in the European population also was observed (OR = 1.29, 95%CI 1.12–1.51). However, for both A779C and A6526G polymorphisms we did not find evidence of an association with SB.ConclusionThis meta-analysis suggests that the A218C polymorphism of TPH1 gene could be a possible risk factor of SB. Future large-scale studies are required to analyze the molecular mechanisms by which affect the susceptibility of developing suicide behavior.
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