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NCI Drug Dictionary

  

valspodar 
An analogue of cyclosporin-A. Valspodar inhibits p-glycoprotein, the multidrug resistance efflux pump, thereby restoring the retention and activity of some drugs in some drug-resistant tumor cells. This agent also induces caspase-mediated apoptosis. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)
US brand name:Amdray
Code name:PSC 833
Chemical structures:6-[(2S,4R,6E)-4-methyl-2-(methylamino)-3-oxo-6-octenoic acid]cyclosporin D
cyclo((2S,4R,6E)-4-methyl-2-(methylamino)-3-oxo-6-octenoyl)-L-valyl-N-methylglycyl-N-methyl-L-leucyl-L-valyl-N-methyl-L-leucyl-L-alanyl-D-alanyl-N-me