In multivariate regression analysis of associations between 12-month mental healthcare utilisation and mental disorders, receiving treatment was significantly associated with MDD (aOR = 1.98, 95% CI = 1.36–2.88), GAD (aOR = 2.50, 95% CI = 1.78–3.52), bipolar spectrum disorder (aOR = 4.97, 95% CI = 1.45–17.09) and DUD (aOR = 4.55, 95% CI = 2.30–8.98), but not with any other disorders assessed (Table 1). The gene discussed is GAD1; the disease is mental disorder.