HMGB1 is a highly conserved non-histone chromosome binding protein, which is closely related to a variety of lung diseases, including pneumonia (Tseng et al., 2014), tuberculosis (Zeng et al., 2015), chronic obstructive pulmonary disease (Sukkar et al., 2012), pulmonary fibrosis (Smit et al., 2014), and lung transplantation (Weber et al., 2014). The gene discussed is HMGB1; the disease is pulmonary fibrosis.