Class/mechanism: Pyrimidine analog, antimetabolite, inhibitor of thymidylate synthase. When given by rapid intraarterial injection, it is rapidly catabolized in vivo to fluorouracil (5-FU), which is metabolized to 5-fluoro-2'-deoxyuridine monophosphate (FdUMP) and 5-fluorouridine triphosphate (FUTP). FdUMP inhibits DNA synthesis by binding to thymidylate synthase and inhibiting production of thymidylate; FUTP interferes with RNA processing when it is mistakenly incorporated in place of uridine triphosphate (UTP). When FUDR is given by continuous intraarterial infusion, direct anabolism to FUDR-monophosphate is enhanced, which increases the inhibition of DNA.
Route: IA (intraarterial)
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Patient drug information
- Floxuridine (FUDR) patient drug information (Chemocare)
- Floxuridine (FUDR) patient drug information (UpToDate)
Disease for which it is used
History of changes in FDA indication
- 12/18/1970: Initial FDA approval for the palliative management of gastrointestinal adenocarcinoma metastatic to the liver, when given by continuous regional intra-arterial infusion in carefully selected patients who are considered incurable by surgery or other means. Patients with known disease extending beyond an area capable of infusion via a single artery should, except in unusual circumstances, be considered for systemic therapy with other chemotherapeutic agents. (No supporting studies are cited)
Also known as
- Code name: WR-138720
- Generic names: floxuridin, fluorodeoxyuridine, fluorouridine deoxyribose
- Brand name: FUDR