Dahl, et al., 2006; Hong, et al., 2003; H. Kranzler, Lappalainen, Nellissery, & Gelernter, 2002; H. R. Kranzler, Hernandez-Avila, & Gelernter, 2002; Patkar, et al., 2001; Sander, Harms, Lesch, et al., 1997). Few studies have looked at additive or interactive effects, although such effects have been noted for the dopamine receptor D2 gene (DRD2) and the GABA receptor subunit gene α3 (GABRA3) variants for alcoholism (Noble, et al., 1998).
