In addition, a combination of Ugrp2 (IVS1-189G>A_c.201delC) GG + CdelC + asthma and (IVS1-89T>G_c.201delC) TT + CdelC + allergies were associated with a 3.3- and 2.4-fold increase in AH risk, respectively. This evidence concerns the gene SCGB3A1 and asthma.