Cell surface FPR2 expressions of both Th cell (9.5 ± 5.7 vs. 16.4 ± 7.8 MFI, adjusted p = 0.003, Fig. 2g) and Tc cell (8.6 ± 4.4 vs. 14 ± 7.3 MFI, adjusted p = 0.004, Fig. 2h) were significantly lower in the COPD patients as compared with that in the healthy non-smokers. This evidence concerns the gene FPR2 and chronic obstructive pulmonary disease.