ENPP2 and acute respiratory distress syndrome: Table 5 shows that the SOFA score (hazard ratio [HR] 1.234, 95% CI 1.084–1.404, P = 0.001), APACHE II score (HR 1.103, 95% CI 1.026–1.186, P = 0.008), and serum ATX level (HR 2.605, 95% CI 1.530–4.435, P < 0.0001) were independent predictors of 28-mortality in patients with ARDS.