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.

PNP-expressing ovine atadenovirus FP253
An ovine atadenovirus encoding E. coli purine nucleoside phosphorylase (PNP) with prodrug activating activity. Under the control of a prostate-directed promoter, PNP-expressing atadenovirus vaccine FP253 expresses PNP in prostate tissue only after intraprostatic administration; this enzyme catalyzes systemically administered fludarabine prodrug into the active agent, 2-fluoroadenine. Localized prodrug activation provides prostate-targeted chemotherapy, potentially reducing systemic side effects. Check for active clinical trials using this agent. (NCI Thesaurus)

Code name:FP253