The combined results of all the studies showed that there were significant associations between the UGRP1-112G/A polymorphism and asthma risk in the genetic model of AA versus GG (OR, 1.76; 95% CI, 1.12–2.78; P=0.01) and in the genetic model of AA versus GA/GG (OR, 1.70; 95% CI, 1.09–2.67; P=0.02) (Table III and Fig. 2). Here, SCGB3A2 is linked to asthma.