HMGB1 and acute respiratory distress syndrome: A recent observational study also supports an ARDS phenotype based on levels of RAGE ligands and soluble forms, as elevated sRAGE, high mobility group box-1 protein (HMGB1), and S100A12, with decreased esRAGE and advanced glycation end-products (AGEs), were found to distinguish patients with ARDS from those without [109].