According to the Nephromine (http://www.nephromine.org/) database that integrates transcriptomics data from several published sources, glomerular CCL21 mRNA was increased in human collapsing FSGS (fold change 1.591, p = 0.045), diabetic nephropathy (1.477, p = 0.023), lupus nephritis (1.316, p = 0.034) and IgA nephropathy (1.137, p = 0.040) and a trend was observed in FSGS (1.386, p = NS) when compared to normal glomeruli (http://www.nephromine.org/; accessed September 1, 2015)36, 37, 38, 39. Here, CCL21 is linked to diabetic kidney disease.