# A Study Comparing the Efficacy and Safety of Zanidatamab to Trastuzumab, Each in Combination With Physician's Choice Chemotherapy, for the Treatment o

Source: https://onco.cc/trials/nct06435429/  
OnCo record `nct06435429` (Trial). Data CC BY-NC 4.0, attribute "Data from OnCo (onco.cc)"; commercial use needs a licence.

## TL;DR

A phase 3 trial of Zanidatamab, Trastuzumab, Eribulin in her2-positive breast cancer, run by Jazz Pharmaceuticals, now recruiting.

## Summary

A Study Comparing the Efficacy and Safety of Zanidatamab to Trastuzumab, Each in Combination With Physician's Choice Chemotherapy, for the Treatment of Participants With Metastatic HER2-positive Breast Cancer is a phase 3 interventional study registered as NCT06435429 by Jazz Pharmaceuticals, with 550 participants planned, started 2024-08-13 and due to reach its primary completion in 2028-04-28. Interventions recorded: Zanidatamab, Trastuzumab, Eribulin, Vinorelbine, Gemcitabine. Conditions listed: Metastatic HER2-positive Breast Cancer. No results are recorded here; the registry entry is the source.

## Fields

- Kind: Trial
- Status: recruiting
- Last checked: 2026-09-16
- Tags: ctgov-ingest
- Registry id: NCT06435429
- Phase: 3
- Setting: A Phase 3, Randomized, Open-label, Multicenter, Controlled Study to Evaluate the Efficacy and Safety of Zanidatamab in Combination With Physician's Choice Chemotherapy Compared to Trastuzumab in Combination With Physician's Choice Chemotherapy for the Treatment of Participants With Metastatic HER2-positive Breast Cancer Who Have Progressed on, or Are Intolerant to, Previous Trastuzumab Deruxtecan Treatment
- Sponsor: Jazz Pharmaceuticals
- Enrolled: 550

## Sources

- ClinicalTrials.gov NCT06435429: https://clinicaltrials.gov/study/NCT06435429

## Connected records

- cancers: [HER2-positive breast cancer](https://onco.cc/cancers/breast-her2-positive/)
- drugs: [Capecitabine](https://onco.cc/drugs/capecitabine/), [Eribulin](https://onco.cc/drugs/eribulin/), [Gemcitabine](https://onco.cc/drugs/gemcitabine/), [Trastuzumab](https://onco.cc/drugs/trastuzumab/), [Vinorelbine](https://onco.cc/drugs/vinorelbine/), [Zanidatamab](https://onco.cc/drugs/zanidatamab/)
- companies: [Jazz Pharmaceuticals](https://onco.cc/companies/jazz/)

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