NCI Drug Dictionary

The NCI Drug Dictionary contains technical definitions and synonyms for drugs/agents used to treat patients with cancer or conditions related to cancer. Each drug entry includes links to check for clinical trials listed in NCI's List of Cancer Clinical Trials.

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zafirlukast
A tolyl compound and leukotriene receptor antagonist (LTRA), with anti-asthmatic and potential capsular contracture-preventing activities. Upon administration, zafirlukast selectively and competitively binds to and blocks the cysteinyl leukotriene 1 receptor (CYSLTR1), thereby preventing the potent pro-inflammatory mediators leukotriene C4, D4 and E4 from binding. This prevents leukotriene-mediated actions, including enhanced migration of eosinophils and neutrophils, increased adhesion of leukocytes, increased monocyte and neutrophil aggregation, increased airway edema, inflammation, capillary permeability and bronchoconstriction. In addition, zafirlukast may decrease collagen deposition, fibrosis, and capsular thickness after implantation, thereby preventing scar tissue. Check for active clinical trials using this agent. (NCI Thesaurus)

US brand name:Accolate
Chemical structure:
  • carbamic Acid,(3-((2-methoxy-4-((((2-methylphenyl)sulfonyl)amino)carbonyl)phenyl)methyl)-1-methyl-1H-indol-5-yl)-, cyclopentyl ester
  • cyclopentyl 3-(2-methoxy-4-((o-tolylsulfonyl)carbamoyl)benzyl)-1-methylindole-5-carbamate