STEP 1 STEP 2
Number of patients 16 8
Age, years 26.4 ± 6.8 26.6 ± 7.5
Gender (male) 10 (62.5%) 5 (62.5%)
Skin prick test to birch, mm 7.4 ± 1.6 7.7 ± 1.6
Birch specific IgE, kU/I 61.3 ± 109.3 54.6 ± 114.1
Allergic comorbidities Positive skin prick test
1/16 (6.2%) †
0/16 (0%)
15/16 (93.7%) ‡ 16/16 (100%)
Asthmatic patients 9/16 (57%) 8/16 (50%)
Mean predictive FEV1, % 103.7 ± 9.6 101.63 (7.1)
CAC Provocative dose of Bet v 1, ng 507.5 ± 392.2 385 ± 349
CAC cumulative dose of Bet v 1, ng 980.0 ± 784.5 735.0 ± 698.0 §