GNG7 and cocaine dependence: Additionally, miR-504-3p has also been directly linked to Gng7 expression in the hippocampus in response to chronic alcohol administration (Choi et al., 2020) and has been associated with nicotine (Huang and Li, 2009b; Dreyer, 2010), and cocaine dependence (Chen et al., 2013), suggesting a possible role in addictive disorders.