CatB inhibition in glioblastoma cells via RNA interference (RNAi) resulted in impaired invasion, reduced cell–cell interaction with endothelial cells (EC), disruption of capillary network formation in vitro and in vivo, and inhibition of established glioma tumor growth and invasion in intracranial tumors in vivo[7], [8]. Here, TYRP1 is linked to glioblastoma.