risk requires large sample sizes to parse out significant associations (e.g. Treutlein et al., 2009). Several consortia across the world are gathering expanded datasets from alcohol use disorder families, including Australian Twin Family Study of AUDs (OZALC) and Collaboration of Genetics of Alcoholism (COGA) in the United States. For more information about resource access visit https://niaaagenetics.org/. For a comprehensive summary of alcohol dependence genetics see (Edenberg and Foroud, 2014; Tawa et al., 2016).