ADAM33 and asthma: Regarding the frequency of the ADAM33 haplotype, we found that the T1 (A), T2 (G), T + 1 (G), V4 (C), S1 (C), S2 (G), Q-1 (G) ADAM33 haplotype was the most common haplotype among adults and children healthy and asthma subjects (Table 7).