Moreover, a trend of elevated CCL5 was observed in both the ASD-only, p = 0.10, and ASD + ADHD groups, p = 0.07, when compared to the concentrations measured for the TD controls, suggesting a small degree of similarity between the immunological profiles of the ASD-only and ASD + ADHD groups. The gene discussed is CCL5; the disease is attention deficit-hyperactivity disorder.