Additionally, fMLP reduced the expression of IL-31RA compared to resting basophils in BO (44.5% ± 23.3 vs. 25.2% ± 11.4) and healthy (51.9% ± 15.7 vs. 35.4% ± 9.8) groups (Figure 4A). This evidence concerns the gene FPR1 and bronchiolitis obliterans syndrome.