CD40LG and acute kidney injury: Rare cases of immunotactoid and nonamyloid fibrillary glomerulopathy, cryoglobulinemia-related glomerulonephritis (GN), and crescentic GN have been reported.[7–10] Although some cases of renal failure due to direct invasion of IgM-secreting monoclonal cells have been reported, there has been no report of acute kidney injury (AKI) due to direct infiltration by IgG-producing LPL.