Association between schizophrenia and genetic variation in DCC: a case-control study

Area of Science:

• Neuroscience
• Genetics
• Psychiatry

Background:

• Schizophrenia is a heritable neurodevelopmental disorder with altered synaptic connectivity.
• Deleted in colorectal cancer (DCC) protein is crucial for neuronal circuitry organization and synaptic development.
• Previous studies show DCC influences mesocorticolimbic dopamine circuitry and confers resilience to schizophrenia-like abnormalities post-puberty.

Purpose of the Study:

• To investigate the potential contribution of the DCC gene to schizophrenia risk.
• To examine associations between single nucleotide polymorphisms (SNPs) in the DCC gene and schizophrenia.

Main Methods:

• A case-control study was conducted with 556 unrelated schizophrenic patients and 208 healthy controls.
• Single nucleotide polymorphisms (SNPs) within the DCC gene were analyzed for association with schizophrenia.
• Statistical analysis included chi-squared tests to evaluate SNP associations.

Main Results:

• One SNP, rs2270954, located in the 3' untranslated region of DCC, showed nominal association with schizophrenia (p=0.0071).
• Schizophrenia patients were less likely to be heterozygous and more likely to be homozygous for the minor allele at rs2270954.
• This SNP is in a regulatory region of mRNA, potentially affecting gene expression.

Conclusions:

• The DCC gene is a promising candidate for contributing to the genetic basis of schizophrenia susceptibility.
• Findings suggest DCC's role in neurodevelopmental processes underlies its association with schizophrenia risk.
• Further research is warranted to elucidate DCC's specific mechanisms in schizophrenia pathogenesis.