CCL2 and lobular neoplasia: These markers include neutrophil gelatinase-associated lipocalin (NGAL), monocyte chemoattractant protein-1 (MCP-1), kidney injury molecule-1 (KIM-1), and tumor necrosis factor-like weak inducer of apoptosis (TWEAK), all of which have been found to correlate with active LN [7,8].