Data also suggested slight phase shifts for BMAL1, DKK1, and CRY1 (peaking later in ADHD, i.e., 14.03 vs. 13.07, 12.54 vs. 10.97, 9.89 vs. 8.99, respectively), as well as PER2 and PER3 (shifting toward an earlier phase in ADHD, i.e., 5.36 vs. 5.74, 1.87 vs. 3.18, respectively). The gene discussed is PER3; the disease is attention deficit-hyperactivity disorder.