IRF1 (PPH4/PPH3 + PPH4 = 0.975), OXER1(PPH4/PPH3 + PPH4 = 0.967), PSMA4(PPH4/PPH3 + PPH4 = 0.972), UNC13D (PPH4/PPH3 + PPH4 = 0.989) and HLA‐DRB1(PPH4/PPH3 + PPH4 = 0.948) expression had significant colocalization associations with asthma. Here, PSMA4 is linked to asthma.