Association study of the complement component C4 gene and suicide risk in schizophrenia.
Journal
Schizophrenia (Heidelberg, Germany)
ISSN: 2754-6993
Titre abrégé: Schizophrenia (Heidelb)
Pays: Germany
ID NLM: 9918367987006676
Informations de publication
Date de publication:
10 Feb 2024
10 Feb 2024
Historique:
received:
19
09
2023
accepted:
23
01
2024
medline:
11
2
2024
pubmed:
11
2
2024
entrez:
10
2
2024
Statut:
epublish
Résumé
Schizophrenia is a severe mental illness and a major risk factor for suicide, with approximately 50% of schizophrenia patients attempting and 10% dying from suicide. Although genetic components play a significant role in schizophrenia risk, the underlying genetic risk factors for suicide are poorly understood. The complement component C4 gene, an immune gene involved in the innate immune system and located in the major histocompatibility complex (MHC) region, has been identified to be strongly associated with schizophrenia risk. In addition, recent findings have also suggested that the MHC region has been associated with suicide risk across disorders, making C4 a potential candidate of interest for studying suicidality in schizophrenia patients. Despite growing interest in investigating the association between the C4 gene and schizophrenia, to our knowledge, no work has been done to examine the potential of C4 variants as suicide risk factors in patients with schizophrenia. In this study, we investigated the association between different C4 copy number variants and predicted C4 brain expression with suicidal outcomes (suicide attempts/suicidal ideation). We directly genotyped 434 schizophrenia patients to determine their C4A and C4B copy number variants. We found the C4AS copy number to be marginally and negatively associated with suicide risk, potentially being protective against suicide attempts (OR = 0.49; p = 0.05) and suicidal ideation (OR = 0.65; p = 0.07). Furthermore, sex-stratified analyses revealed that there are no significant differences between males and females. Our preliminary findings encourage additional studies of C4 and potential immune dysregulation in suicide.
Identifiants
pubmed: 38341430
doi: 10.1038/s41537-024-00440-w
pii: 10.1038/s41537-024-00440-w
doi:
Types de publication
Journal Article
Langues
eng
Pagination
14Informations de copyright
© 2024. The Author(s).
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