The COGA genome screen data were also used in the Genetic Analysis Workshop (GAW),6 conducted in Aracachon, France, in September 1998. During that workshop, the researchers compared the genome data with the COGA participants’ lifetime histories of smoking and alcohol dependence. This analysis identified several DNA regions that appeared to show shared linkage with both disorders (Bergen et al. 1999). The genetic study of co-occurring habitual smoking and alcohol dependence is ongoing.
