Linkage findings on chromosome 2 suggest a gene predisposing to multiple behavioral undercontrol phenotypes

Evidence from independent studies is converging to suggest that a region on chromosome 2p contains a gene (or genes) that predispose to multiple behavioral phenotypes related to behavioral undercontrol. Here we present data from the Collaborative Study of the Genetics of Alcoholism (COGA) and the Nicotine Addiction Genetics Project (NAG) demonstrating linkage to chromosome 2 with multiple, related phenotypes.