RESUMEN
BACKGROUND: Schizophrenia is associated with a high rate of suicide. AIM: Our study was aimed to identify the rates of suicide ideas in patients with schizophrenia as well as the risk factors associated with suicide ideas. METHODS: As many as 1130 subjects were evaluated using the Indonesian version of Diagnosis Interview for Psychosis (DIP) to establish the diagnosis of schizophrenia. Subjects aged 18-65 years. The risk factors were socio-demographic data, mental disorder history in the family, clinical symptoms and clinical course of schizophrenia. Risk factors that have the strongest correlation with suicide ideas were analysed using multivariate logistic regression analysis. RESULTS: About 6.1% of subjects reported suicide ideas in their life. The age of disease onset (p = 0.006), family history of schizophrenia (p = 0.013), poor concentration (p = 0.032), loss of enjoyment (p = 0.000), guilty feeling (p = 0.000), family history of mental illness (p = 0.000), nihilistic delusion (p = 0.001) and alcohol abuse (p = 0.000) were significantly associated with suicide ideas. CONCLUSION: Suicide idea is quite common in people with schizophrenia. Evaluation and management of risk factors associated with suicide ideas should be performed to prevent suicide attempts or death. Suicide ideas and risk factors can become clinical parameters in the instrument of suicide prevention.
RESUMEN
BACKGROUND: Association of rs1344706 in the ZNF804A gene (2q32.1) with schizophrenia was first reported in a genome wide scan conducted in a sample of 479 cases and replicated in 6666 cases. Subsequently, evidence by replication was obtained in several samples with European- and Asian ancestral background. METHODS: We report ascertainment, clinical characterization, quality control, and determination of ancestral background of a case control sample from Indonesia, comprising 1067 cases and 1111 ancestry matched controls. Genotyping was performed using a fluorescence-based allelic discrimination assay (TaqMan SNP genotyping assay) and a newly designed PCR-RFLP assay for confirmation of rs1344706 genotypes. RESULTS: We confirmed association of the T-allele of rs1344706 with schizophrenia in a newly ascertained sample from Indonesia with Southeast Asian ancestral background (P=0.019, OR=1.155, 95%, CI 1.025-1.301). In addition, we studied several SNPs in the vicinity of rs1344706, for which nominally significant results had been reported. None of the association P values of the additional SNPs exceeded that of rs1344706. CONCLUSION: We provide additional evidence for association of the ZNF804A gene with schizophrenia. We conclude that rs1344706 or a yet unknown polymorphism in linkage disequilibrium is also involved in conferring susceptibility to schizophrenia in samples with different (Asian) ancestral backgrounds.