Additionally, patients who suffered ARDS had higher levels of SLPI (ng/ml, 160.6 (138.8–204) vs 143.6 (121.5–175.6), p = 0.008) and patients who develop organizing pneumonia had higher levels of SP-D (ng/ml, 160.7 (116.6–200.8) vs 147.3 (102–185), p = 0.048). This evidence concerns the gene SLPI and acute respiratory distress syndrome.