FCN2 and newborn respiratory distress syndrome: Median ficolin-2 concentration was significantly lower in newborns diagnosed with RDS compared with neonates without this complication (for patients born <33 GA: 1471 vs. 2115 ng/ml, p=0.0003; for patients born ≥33 GA: 1610 vs. 2081 ng/ml; p=0.012) (Figure 1A).