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Updated: Aug 9, 2026

Standardized Data Acquisition for Neuromelanin-Sensitive Magnetic Resonance Imaging of the Substantia Nigra
Published on: September 8, 2021
[An association study between paranoid schizophrenia and four genes involved in dopamine metabolism]
1The MOE Key Laboratory of Bioinformatics, Department of Automation, Tsinghua University, Beijing 100084, China. lijunning98@mails.tsinghua.edu.cn
Abstract:
Schizophrenia is a complex disease caused by interactions among multiple genes. Reports of one of its susceptibility genes, ethyltracatechol-O-mnsferase (COMT) have been conflicting. In the present study on paranoid schizophrenia, we have performed a multilocus association study to analyze the interactions among 4 genes that are involved in dopamine metabolism. Result supports the hypothesis that COMT-136-BclI regulates Val108/158Met. When the genotype of the former is CC, Met (A) is the genotype of susceptibility allele Val108/158Met; and when the genotype of the former is GG, Val (G) is the genotype of susceptibility allele Val108/158Met. This new hypothesis may explain the conflicting results about Val108/158Met (COMT) obtained by single-locus analyses. It also illustrates that multilocus analysis is necessary for the research of complex diseases.
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