SERPINB5 and neoplasm: Moreover, Serpins display functions such as blood pressure regulation (SERPINA8) (Davisson et al., 1997), hormone transport (SERPINA6, SERPINA7) (Zhou et al., 2006; Klieber et al., 2007), tumor suppression (SERPINB5) (Zhang, Magit & Sager, 1997) as well as molecular chaperone functions (SERPINH1) (Silverman et al., 2010) which are not based on protease inhibition.