Furthermore, we found that CD40L receptor levels potentially mediated multiple immune cells and ADHD (Table S8 and Fig. S1), including, CD27 on memory B cell, CD27 on sw mem, CD40 on CD14+ CD16− Monocyte, CD27 on unsw mem, CD40 on CD14+ CD16+ monocyte, CD27 on IgD- CD38dim, CD40 on CD14− CD16+ monocyte, and CD40 on monocytes. This evidence concerns the gene CD40 and attention deficit-hyperactivity disorder.