A silent immune attack on the kidney could be treated by new drugs, if it can be found early

This article is part of “Innovations In: Kidney Disease,” an editorially independent special report that was produced with financial support from Vertex. The man in his 50s arrived at Ellie Kelepouris’s office carrying a sheaf of medical records. They contained years’ worth of laboratory test results that showed microscopic traces of blood in his urine. Kelepouris, a nephrologist at the University of Pennsylvania’s Perelman School of Medicine, wasn’t the first kidney specialist he had consulted.