The authors also demonstrated an inverse correlation (r= –0.706, p < 0.001) between the percent of activated basophils in the BAT (CD63+) and the asthma control test outcome (C-ACT; a higher value means better asthma control), as well as a positive correlation (r = 0.693, p < 0.001) between the percent of activated basophils and visual analogue scale of rhinitis (a higher value reflects a greater intensity of symptoms). Here, CD63 is linked to asthma.