SPINK5 is a symbol for the gene, Serine peptidase inhibitor, Kazal type 5, in humans. Other names include: Serine protease inhibitor Kazal-type 5; LEKTI; Lympho-epithelial Kazal-type-related inhibitor; lymphoepithelial Kazal-type-related inhibitor; LETKI; NETS; NS; VAKTI. The encoded protein has an amino acid length of 1064 and a mass of 120.7 kDa. Other isoforms may exist. This gene shares homology with other species, including: Mouse, Rat, Chicken.