Nine genes and their corresponding polymorphisms, including DNAH6 (rs1192269) [71], GJA (GJA4 variant) [73], MBL [39], macrophage migration inhibitor (MIF) (−794 CATT polymorphic repeats (MIF-CATT) [58], PPP2R4 (rs3118625) [32], PPP2R1A (rs2162779) [32], SLC6A14 (rs12839137) [7], SCNN1B (rs1391471777) [77], TGBβ1 (rs1800469) [75], TLR5 (rs5744168) [48], and SCNN1D (V541L and p579L) [77], were associated with less severe pulmonary disease. The gene discussed is MIF; the disease is lung disorder.