As expected, the trajectory of absolute T cells and B cells was significantly lower in AT patients (CD3+ T cells p < 0.001; CD3+CD8+ T cells p < 0.001; CD3+CD4+ T cells p < 0.001; CD19+ B cells p < 0.001; Figures 2A–C, F). This evidence concerns the gene CD8A and ataxia telangiectasia.