For the AUD-related variables, a model adjusted for age and lifetime major depression was built; according to this model, duration of drinking (OR = 1.06, 95% CI: 1.01, 1.12), severity of AUD (OR = 1.38, 95% CI: 1.05, 1.81) and level of prolactin (OR = 0.99, 95% CI: 0.98, 1.00) were associated with suicide attempt. The gene discussed is PRL; the disease is major depressive disorder.