CYP27A1 and chronic obstructive pulmonary disease: They include RBM42, STX5, and TRIM41 in asthma, CYP27A1, GM2A, LGALS9, SPI1, and NLRC4 in COPD, as well as ATF3, PPP1R15A, ZFP36, SOCS3, NAMPT, and GADD45B in IPF.