A/APublished research associates this genotype with substantially faster conversion of alcohol to acetaldehyde. Common in East Asian populations and often co-occurs with the ALDH2 flush variant (see rs671).
G/APublished research associates this genotype with faster conversion of alcohol to acetaldehyde, which can produce more pronounced effects from a given amount of alcohol and is associated with lower rates of heavy drinking in population studies.
G/GTypical ADH1B enzyme activity in published research — alcohol is converted to acetaldehyde at the usual rate.
Source: Edenberg 2007, Alcohol Research & Health — the genetics of alcohol metabolism (ADH and ALDH gene families).