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Updated: Mar 24, 2026

Candidate Gene Testing in Clinical Cohort Studies with Multiplexed Genotyping and Mass Spectrometry
Published on: June 21, 2018
Association between -174 G/C polymorphism of interleukin-6 gene and alcoholism
Omar Šerý1, Renáta Hladilová1, Miroslav Novotný2
11Laboratory of Neurobiology and Molecular Psychiatry, Department of Comparative Animal Physiology and General Zoology, Masaryk University, Faculty of Science, Brno.
Objectives:
IL-6 plays the role as a physiological neuromodulator involved in dopaminergic, serotonergic and other neurotransmissions. The aim of the present association study was to examine the effect of the G/C -174 polymorphism of the IL-6 gene on disposition to alcoholism.
Methods:
We investigated the relationship between the G/C -174 polymorphism of the IL-6 gene and alcohol dependence in 281 alcoholics and 242 control subjects.
Results:
The significant difference in G allele frequency between alcoholic group (0.52) and control group (0.59) was found (P < 0.03).
Conclusion:
To our knowledge, this is the first finding providing evidence for an association between alcoholism and the polymorphism of the IL-6 gene. The background of the relationship between the IL-6 gene and alcoholism is discussed.
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