GLPG1205 (9‐cyclopropylethynyl‐2‐[(S)‐1‐(1,4)dioxan‐2‐ylmethoxy]‐6,7‐dihydropyrimido[6,1‐a]isoquinolin‐4‐one; compound code G321605; Supplemental Figure 1) is a novel modulator of GPR84 currently under development as a therapy for idiopathic pulmonary fibrosis (IPF). The gene discussed is GPR84; the disease is pulmonary fibrosis.