F curves were plotted and sPD-1 levels in murine blood (AUC = 1 (1–1), p = 0.006), murine BAL fluid (AUC = 0.905 (0.717–1.093), p = 0.015), and human BAL (AUC = 1 (1–1), p = 0.001) fluid predicted ARDS. The gene discussed is HOXD13; the disease is acute respiratory distress syndrome.