Idiopathic pulmonary fibrosis (IPF) is a progressive and fatal lung disease with limited treatment options. IPF is thought to result from repeated microinjuries to aging lung tissue, triggering dysfunctional repair responses that drive fibrosis and respiratory failure. Researchers from the University of Wisconsin Madison and the University of Texas Medical Branch have now identified a potential new therapeutic approach for IPF by targeting bromodomain-containing protein 4 (BRD4).