[1]Richeldi L., et al. Safety and Efficacy of BI 1015550, a Preferential Inhibitor of Phosphodiesterase 4B, in Patients with Idiopathic Pulmonary Fibrosis: a Phase 2 Trial. Presented at American Thoracic Society (ATS) International Conference Breaking News session on May 16 2022.
[2]Herrmann FE et al. Front Pharmacol 2022;13:838449; Raker VK et al. Front Immunol 2016;7:123