ADH Variants and Ethnic Diversity in East Asia

Sample size: 24 publication 15 minutes Evidence: moderate

Author Information

Author(s): Li Hui, Gu Sheng, Cai Xiaoyun, Speed William C., Pakstis Andrew J., Golub Efim I., Kidd Judith R., Kidd Kenneth K.

Primary Institution: Yale University

Hypothesis

The study investigates the selection of the ADH1B gene variant in East Asian populations and its correlation with ethnicity.

Conclusion

The study found that the selection distribution is more significantly correlated with the frequency of the derived ADH1B regulatory region polymorphism than the derived amino-acid altering allele ADH1B*47His.

Supporting Evidence

The ADH1B genotyping data are strongly related to ethnicity.
Only some eastern ethnic phyla have a high frequency of ADH1B*47His.
The study included populations from all six major linguistic phyla in East Asia.
Evidence of positive selection was found in several East Asian populations.
The derived allele at SNP 11 is associated with increased ADH1B expression.
High frequencies of ADH1B*47His are found in agricultural populations.
Selection may be influenced by cultural factors related to alcohol consumption.
Geographic patterns of allele frequency show a clear east-west division.

Takeaway

This study looks at how different groups of people in East Asia have different versions of a gene that helps break down alcohol, and why that might be important for their health.