MTPN and membranous glomerulonephritis: Microarray studies have highlighted CAPNS1 as being modulated in membranous nephropathy [63] and in immunoglobulin A nephropathy [98], while other studies have reported the importance of miR-375 (for which myotrophin MTPN is a target) for glucose homeostasis and as a potential biomarker in type 2 diabetes [99,100].