MMP-7 activity has been previously reported in association with fibrotic changes in the kidney (Catania et al. 2007) and other fibrotic conditions, such as idiopathic pulmonary fibrosis (Zuo et al. 2002; Rosas et al. 2008) and liver fibrosis (Huang et al. 2005). This evidence concerns the gene MMP7 and pulmonary fibrosis.