Encoded by the collagen type IV alpha-3 (COL4A3), alpha-4 (COL4A4), and alpha-5 (COL4A5) genes, Alport syndrome (AS) is a rare inherited renal disease caused by abnormalities of the α3, α4, or α5 chains in type IV collagen [1]. This evidence concerns the gene COL4A5 and Alport syndrome.