the major linkage peak we observed for AD does not coincide with peaks observed for cocaine (23), nicotine (25), or opioid dependence (24), in our previous studies, with one exception: we observed “suggestive” linkages for Fagerstrom Test for Nicotine Dependence (FTND) scores on both sides of the chromosome 10 peak, i.e., flanking it, under different analytic models, in EA subjects (24).
