CD80 and lipoid nephrosis: Urinary levels of CD80 in patients with relapsed minimal change disease were significantly greater when compared to those in patients with minimal change disease in remission, SLE (with and without proteinuria), other glomerulopathies (FSGS, membranoproliferative glomerulonephritis, IgA nephropathy, and membranous nephropathy), and healthy control patients [104].