Published recently in the Journal of Pathology, Lavoz et al. show that Gremlin promotes renal inflammation directly via VEGFR2. As Gremlin has been implicated in many other diseases, such as heart, lung and liver fibrosis, osteogenesis, angiogenesis and cancer, the new findings provide a rationale for novel concepts to investigate and potentially treat several pathologies. Copyright © 2015 Pathological Society of Great Britain and Ireland. Published by John Wiley & Sons, Ltd.