On Days 30 and 100 posttransplantation, CD4+ T-cell counts were significantly higher in the non-cord-blood-transplanted children with WAS compared to the non-cord-blood-transplanted children with CGD [244.39 (97.21-401.69) ×106cells/L vs. 139.22 (63.26-253.12) ×106cells/L, P=0.024], [260.25 (118.72-479.53) ×106cells/L vs. 148.64 (111.06-282.32) ×106cells/L, P=0.049]. Here, CD4 is linked to Wiskott-Aldrich syndrome.