Many proteins involved in the pathophysiology of ALI/ARDS have been suggested as biological markers, including Clara cell protein (CC16) [8], soluble receptor for advanced glycation end products (sRAGE) [9], surfactant protein D (SP-D) [10] and Krebs von den Lungen (KL)-6) [11]. The gene discussed is MUC1; the disease is acute respiratory distress syndrome.