# Phase II Study of FTD/TPI (Lonsurf) in Metastatic Breast Cancers With or Without Prior Exposure to Fluoropyrimidines (LONBRECA)

> **NCT04280536** · PHASE1,PHASE2 · ACTIVE_NOT_RECRUITING · sponsor: **National University Hospital, Singapore** · enrollment: 86 (estimated)

## Conditions studied

- Breast Cancer

## Interventions

- **DRUG:** Cohort A
- **DRUG:** Cohort B

## Key facts

- **NCT ID:** NCT04280536
- **Lead sponsor:** National University Hospital, Singapore
- **Sponsor class:** OTHER
- **Phase:** PHASE1,PHASE2
- **Study type:** INTERVENTIONAL
- **Status:** ACTIVE_NOT_RECRUITING
- **Start date:** 2019-08-14
- **Primary completion:** 2026-06
- **Final completion:** 2026-06
- **Target enrollment:** 86 (ESTIMATED)
- **Last updated:** 2025-09-23


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04280536

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04280536, "Phase II Study of FTD/TPI (Lonsurf) in Metastatic Breast Cancers With or Without Prior Exposure to Fluoropyrimidines (LONBRECA)". Retrieved via AI Analytics 2026-05-25 from https://api.ai-analytics.org/clinical/NCT04280536. Licensed CC0.

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*[Clinical trials dataset](/datasets/clinical-trials) · CC0 1.0*