Depending on data filtering, gene–gene rhythmicity associations included CRY1–SIRT1, PER3–FOXO1, and CLOCK–CTNNB1 in ADHD subjects, as well as CLOCK–DKK1 (ADHD) and BMAL1–DKK1 in controls. The gene discussed is BMAL1; the disease is attention deficit-hyperactivity disorder.