Drugs / Fosifloxuridine Nafalbenamide
last change Oct 2025 re-read 9 days ago

Fosifloxuridine Nafalbenamide

Other / unclassified targets TYMS via inhibition

Developed for
cancer · colorectal adenocarcinoma · colorectal carcinoma · malignant pleural mesothelioma · non-small cell lung carcinoma
Investigated by
NuCana plc · University of Oxford

Trials 4

PhaseRegistry idDatesIndicationSponsorStatusOutcome
Phase 11 trial
Phase 1 NCT02723240 Jan 2016 → Feb 2020 cancer University of Oxford Completed No outcome recorded
Phase 1/22 trials
Phase 1/2 NCT05714553 Mar 2023 → May 2025 cancer of unknown primary site, carcinoma of esophagus, classic Hodgkin lymphoma, colorectal cancer +11 NuCana plc Terminated No outcome recorded Stop: Business
Phase 1/2 NCT03428958 Oct 2018 → Mar 2024 colorectal carcinoma NuCana plc Completed No outcome recorded
Phase 21 trial
Phase 2 NCT05678257 Apr 2023 → Aug 2024 colorectal adenocarcinoma NuCana plc Terminated No outcome recorded

News releases announcing trial results or a regulatory action · 18

DateIssuerRelease
2025-10-14 Nucana Results NuCana Announces Encouraging Data for NUC-3373 in Combination with Anti-PD-1 Therapy nucana.com ↗
The update includes results from the NuTide:303 clinical study, published on medRxiv, the preprint server for health sciences, together with complementary preclinical findings published in the peer-reviewed journal Public Library of Science ONE (PLOS ONE).
2024-11-11 Nucana Results NuCana Announces Encouraging Initial Data from Phase 1b/2 Modular Study of NUC-3373 in Combination with Pembrolizumab or Docetaxel nucana.com ↗
Encouraging signals of anti-cancer activity were observed with confirmed Partial Responses in 2 patients and Stable Disease in a further four patients, resulting in an objective response rate of 22% and a disease control rate of 67% in the efficacy evaluable population.
2024-08-29 Nucana Results NuCana Announces Update for Phase 2 Randomized Colorectal Cancer Study nucana.com ↗
NuCana plc (NASDAQ: NCNA) announced that the NuTide:323 study is being discontinued following a pre-planned initial analysis and recommendation from the NuTide:323 Study Steering Committee.
2023-10-13 Nucana Results NuCana Presents Encouraging Data on NUC-3373 in Colorectal Cancer at the AACR-NCI-EORTC International Conference on Molecular Targets and Cancer Therapeutics 2023 nucana.com ↗
Data presented today showed that both regimens had favorable tolerability profiles.
2022-10-26 Nucana Results NuCana Presents Positive Data on NUC-3373 at the 34th EORTC-NCI-AACR Annual Meeting 2022 nucana.com ↗
NUC-3373 was shown to be a more potent inhibitor of TS than both pemetrexed and 5-FU.
2022-09-12 Nucana Results NuCana Presents Favorable Data on NUC-3373 at the European Society of Medical Oncology (ESMO) Annual Meeting 2022 nucana.com ↗
Both NUFOX and NUFIRI demonstrated encouraging anti-tumor activity in heavily pre-treated CRC patients with progressive disease who had all previously received regimens containing 5-FU, oxaliplatin and irinotecan.
2022-03-08 Nucana Results NuCana Announces Upcoming Presentations on NUC-3373 at the American Association for Cancer Research (AACR) Annual Meeting 2022 nucana.com ↗
NUC-3373 causes colorectal cancer (CRC) cell lines to release damage associated molecular patterns (DAMPs), molecular signals that can activate immune cells leading to immunogenic cell death (ICD).
2022-03-02 Nucana Results NuCana Announces Update for Phase 3 Biliary Tract Cancer Study nucana.com ↗
The IDMC concluded that Acelarin plus cisplatin was unlikely to achieve its primary objective of demonstrating at least a 2.2-month improvement in overall survival as compared to the standard of care, gemcitabine plus cisplatin.
2021-09-16 Nucana Results NuCana Announces Four Poster Presentations at the ESMO Congress 2021 nucana.com ↗
NUC-3373 Continues to Demonstrate Encouraging Efficacy Signals and a Favorable Safety Profile in Patients with Advanced Colorectal Cancer
2021-04-10 Nucana Results NuCana Announces Five Poster Presentations at the American Association for Cancer Research (AACR) Annual Meeting 2021 nucana.com ↗
In this difficult-to-treat group, who had received a median of four prior lines of therapy, NUC-3373, with or without leucovorin, demonstrated a 62% disease control rate (defined as stable disease lasting more than 8 weeks) in the efficacy-evaluable population.
2021-01-15 Nucana Results NuCana Presents Encouraging Data at ASCO GI for NUC-3373 in Heavily Pre-Treated Patients with Metastatic Colorectal Cancer nucana.com ↗
NuCana plc (NASDAQ: NCNA) today announced interim data from the ongoing NuTide:302 study at the ASCO GI Conference, being held virtually January 15-17, 2021.
2020-09-21 Nucana Results NuCana Presents Three Posters at the ESMO Virtual Congress 2020 nucana.com ↗
Data from the ongoing Phase Ib study (NuTide:302) in heavily pre-treated patients with metastatic colorectal cancer demonstrated NUC-3373’s favorable pharmacokinetic and tolerability profile was unaffected by leucovorin.

All press releases naming this drug 19 releases

DateIssuerRelease

Evidence & citations 9 cited values

Every value below carries the sentence it was read from. 6 sources stand behind the page.

FieldValueCited text
Known as Fosifloxuridine Nafalbenamide ClinicalTrials.gov intervention name — accepted as the source's own label NCT05714553 ↗
1

NCT05678257 ↗

Known as CPF-373 ChEMBL registry synonym — accepted as the source's own label CHEMBL2181367 ↗
Known as Fosifloxuridina nafalbenamida ChEMBL registry synonym — accepted as the source's own label CHEMBL2181367 ↗
Known as NUC-3073 ChEMBL registry synonym — accepted as the source's own label CHEMBL2181367 ↗
Known as NUC-3373 ClinicalTrials.gov intervention name — accepted as the source's own label NCT03428958 ↗
1

NCT02723240 ↗

Action Inhibit “NUC-3373, a targeted thymidylate synthase inhibitor” PMID 38566164 ↗ Apr 2024
Modality Small molecule “NUC-3373 (a pyrimidine nucleotide analogue)” NCT02723240 ↗
Route Intravenous “administered weekly or fortnightly as an I.V. (intravenous) infusion” NCT02723240 ↗
Target TYMS “NUC-3373, a targeted thymidylate synthase inhibitor” PMID 38566164 ↗ Apr 2024