Significant associations between the SNP rs3908461 of RNF219‐AS1 and ADHD were detected under the allelic model [P =8.607E‐05; OR = 1.35, 95% confidence interval (CI) 1.16‐1.58)] and dominant genotypic model [P =9.628E‐05; OR = 2.00, 95% CI (1.41‐2.86)], with C‐allele as risk factor (Table 2). Here, OBI1 is linked to attention deficit-hyperactivity disorder.