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The candidate gene approach in alcoholism: are there gender-specific differences?
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Journal Article
The candidate gene approach in alcoholism: are there gender-specific differences?
2003
Overview
It is well established that genetic factors play a major role in the development of alcoholism in both sexes. Several twin studies demonstrated a nearly equally high magnitude of genetic influence for men and women. However, the genetic sources of vulnerability are supposed to only partially overlap in men and women. Therefore, we evaluated the gender-specific effects of two single nucleotide polymorphisms affecting dopaminergic neurotransmission (dopamine D2 receptor: -141C Ins/Del polymorphism; Dopamine D3 receptor: Bal I) in our large sample of primary alcoholics. Only a gender-specific analysis of subgroups with a putatively high genetic load, e.g., family-history-positive or presence of severe withdrawal complications, revealed significant differences in allele-/genotype-frequency. Our results demonstrate that a varying sex distribution in the samples investigated might contribute to the heterogeneous results reported in association studies for candidate genes in alcoholism and, therefore, should be taken into account in future studies.
Publisher
Springer Nature B.V
