Corresponding associations were observed depending on birthweight: RDS patients with BW ≥1500 g had lower levels of both CL-10 and CL-11 compared with unaffected babies (Supplementary Figures 7G, H) while MBL concentration differed in the other (BW<1500 g) group (Supplementary Figure 7I). Here, COLEC10 is linked to newborn respiratory distress syndrome.