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FOLFIRI regimen

National Cancer Institute (NCI) · Phase 3 active Small molecule

FOLFIRI is a chemotherapy regimen that combines three drugs to inhibit DNA synthesis and cell division, primarily targeting rapidly dividing cancer cells.

FOLFIRI is a chemotherapy regimen that combines three drugs to inhibit DNA synthesis and cell division, primarily targeting rapidly dividing cancer cells. Used for Metastatic colorectal cancer, Advanced colorectal cancer.

At a glance

Generic nameFOLFIRI regimen
Also known asFOLFIRI, Irinotecan Hydrochloride from Pfizer+Folinic acid+5-fluorouracil (5-FU)
SponsorNational Cancer Institute (NCI)
Drug classChemotherapy regimen (combination of antimetabolite and topoisomerase I inhibitor)
TargetThymidylate synthase (5-FU), Topoisomerase I (irinotecan)
ModalitySmall molecule
Therapeutic areaOncology
PhasePhase 3

Mechanism of action

FOLFIRI consists of 5-fluorouracil (5-FU), leucovorin (folinic acid), and irinotecan (CPT-11). 5-FU is a pyrimidine antimetabolite that inhibits thymidylate synthase and gets incorporated into DNA/RNA. Leucovorin enhances 5-FU's effect by stabilizing its binding to thymidylate synthase. Irinotecan is a topoisomerase I inhibitor that prevents DNA unwinding and repair, leading to DNA damage and cell death.

Approved indications

Common side effects

Key clinical trials

Primary sources

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SourceUsed for
ClinicalTrials.govTrial enrolment, design, endpoints, results

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