VMAT1 Gene and Schizophrenia in Japanese People
Author Information
Author(s): Misty Richards, Yoshimi Iijima, Hitomi Kondo, Tomoko Shizuno, Hiroaki Hori, Kunimasa Arima, Osamu Saitoh, Hiroshi Kunugi
Primary Institution: National Institute of Neuroscience, National Center of Neurology and Psychiatry, Tokyo, Japan
Hypothesis
Does the VMAT1 gene have an association with schizophrenia in a Japanese population?
Conclusion
The study did not find a link between the Pro4Thr variant of the VMAT1 gene and schizophrenia, but identified a potential association of the Thr98Ser variant with susceptibility to schizophrenia in women.
Supporting Evidence
- The study found no significant difference in the Pro4Thr SNP between patients and controls.
- A significant association was found for the Thr98Ser SNP in females, suggesting a potential role in schizophrenia susceptibility.
- The odds ratio for the Thr98 allele in female patients was 1.69, indicating a higher prevalence compared to controls.
Takeaway
Researchers looked at a gene that might be linked to schizophrenia in Japanese people and found that one specific change in the gene could be related to the illness in women.
Methodology
The study involved genotyping 354 patients with schizophrenia and 365 healthy controls for several SNPs using the TaqMan allelic discrimination assay.
Potential Biases
The study may have been influenced by the ethnic background of the sample, which was limited to a Japanese population.
Limitations
The study only examined non-synonymous SNPs that were already known and may have missed other functional polymorphisms.
Participant Demographics
354 patients (212 males, mean age 44.0 years) and 365 controls (113 males, mean age 39.7 years), all biologically unrelated Japanese.
Statistical Information
P-Value
0.003
Confidence Interval
1.19–2.40
Statistical Significance
p<0.01
Digital Object Identifier (DOI)
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