NCIt definition : A vascular-acting photosensitizer consisting of a water-soluble, palladium-substituted
bacteriochlorophyll derivative with potential antineoplastic activity. Upon administration,
paldeliporfin is activated locally when the tumor bed is exposed to low-power laser
light; reactive oxygen species (ROS) are formed upon activation and ROS-mediated necrosis
may occur at the site of interaction between the photosensitizer, light and oxygen.
Vascular-targeted photodynamic therapy (VTP) with padeliporfin may allow tumor-site
specific cytotoxicity while sparing adjacent normal tissues.;