Phenotypic shift from active class IV lupus nephritis to lupus podocytopathy: a case report highlighting the treatment-altering role of repeat kidney biopsy
BackgroundThe underlying pathophysiological mechanisms of proteinuria relapse in lupus nephritis (LN) patients during immunological remission are complex, often involving non-immune complex-mediated podocyte injury.Case presentationWe report a 21-year-…