ANGPTL4 and primary membranoproliferative glomerulonephritis: Li et al also reported an increase in urinary Angptl4 expression, by Western blot, in patients with MCD, FSGS and MN with proteinuria compared to that observed in mPGN patients, also consistent with a relationship of Angptl4 urinary excretion to proteinuria rather than to MCD [7].