NCT07578116 Trastuzumab Oligometastatic Disease Clinical Landscape Report 2026: Design, Endpoints, Sponsor and Readout Outlook
Turn a newly registered trial into a decision-ready clinical landscape. This report examines NCT07578116 using PatSnap Clinical Trials MCP for protocol design and endpoint evidence, with Drug & Asset MCP and Company & Deal Intelligence MCP used as the companion asset and sponsor enrichment workflow. Explore PatSnap MCP Servers to reproduce the research sequence inside an AI workflow.
MCP evidence snapshot: 22 July 2026. Trial records, recruitment status and projected dates can change after the snapshot and should be rechecked before operational decisions.
Why NCT07578116 is a hot trial to watch
Oligometastatic Disease is being segmented by mechanism, treatment setting, geography and endpoint architecture. NCT07578116 is notable because it evaluates Trastuzumab in a Phase 3 design sponsored by SWOG. The main development question is whether the protocol can translate its rationale into a clinically interpretable and operationally credible readout.
Trial landscape snapshot
| Field | Indexed detail |
|---|---|
| Registration | NCT07578116 |
| Official title | Adding Surgery and Radiation to the Usual Treatment for HER2-Positive Breast Cancer That Had Already Spread at Diagnosis |
| Phase / status | Phase 3 / Not yet recruiting |
| Intervention | Trastuzumab |
| Sponsor | SWOG |
| Geography | Not reported in the indexed record |
| Enrollment | [object Object] |
| Primary endpoint | Overall survival (OS) (Cohort A) |
| Endpoint time frame | From date of Step 2 registration to date of death, assessed up to 10 years |
| Primary completion / readout proxy | [object Object] |
Protocol design and endpoint interpretation
This phase III trial evaluates the effect of adding locoregional therapy (surgery and radiation) and metastasis-directed stereotactic body radiation therapy (SBRT) to standard systemic therapy following standard HER2-targeted systemic therapy, compared to standard systemic therapy alone, in treating patients with HER2-positive stage IV breast cancer that has spread from where it first started (primary site) to other places in the body (metastatic) or to a limited number of sites (oligometastatic). The usual approach for patients with (oligo)metastatic HER2-positive breast cancer is systemic drug treatment, which means medicines that travel through the whole body to treat both the breast and any areas where the cancer has spread. There are a number of approved HER2-targeted systemic therapy regimens available to patients. These typically include immunotherapy and/or chemotherapy. Immunotherapy drugs may induce changes in body's immune sy
Allocation is Randomized, masking is None (Open Label), and the intervention model is Parallel Assignment. Planned enrollment of [object Object] participants across Not reported in the indexed record shapes statistical precision, execution risk and external validity. Interpretation should account for baseline risk, prior therapy, assessment schedule, missing-data handling and clinical relevance—not only statistical significance.
- Overall survival (OS) (Cohort A) (From date of Step 2 registration to date of death, assessed up to 10 years) — The primary analysis to evaluate the primary objective in the randomized cohort will be an intent-to treat (ITT) comparison of Arm 1 versus Arm 2 using a stratified log-rank test including all randomized, eligible participants. The hazard ratio and 95% confidence interval (CI) will be estimated by Cox regression including the stratification factors as variables in the model. Primary analyses will be repeated among in
- Progression-free survival (PFS) (Observational Cohort B) (From date of Step 2 registration to date of first documentation of progression or recurrence or death, assessed at 3 and 5 years) — In the observational cohort, the primary objective will be evaluated by estimating 3- and 5-year survival and corresponding 95% CIs using the Kaplan-Meier estimator. All analyses in the observational cohort will be descriptive. Primary analyses will be repeated among individuals with brain metastases to understand whether the effect of the intervention differs in this subgroup.
- Overall survival (Observational Cohort B) (From date of Step 2 registration to date of death, assessed at 3 and 5 years) — In the observational cohort, the primary objective will be evaluated by estimating 3- and 5-year survival and corresponding 95% CIs using the Kaplan-Meier estimator. All analyses in the observational cohort will be descriptive. Primary analyses will be repeated among individuals with brain metastases to understand whether the effect of the intervention differs in this subgroup.
Readout outlook and evidence gap
The current protocol points to [object Object] as the best available readout proxy. Because this is an active or newly posted study, a trial-specific result citation is not included until a normalized clinical-trial-result record becomes available. That gap is itself operationally important: teams should monitor first result indexing, conference abstracts, protocol amendments and changes to the primary-completion date.
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Asset and sponsor context
Drug & Asset MCP profile: Trastuzumab is indexed as Monoclonal antibody, with target HER2, mechanism HER2 antagonists, ADCC, and global highest development status Approved.
Company & Deal Intelligence MCP profile: SWOG did not return an exact normalized organization match in this snapshot. The organization workflow adds identity, location, portfolio and partnering context where available.
The sponsor profile matters because scientific rationale alone does not determine development value. Manufacturing readiness, portfolio fit, geographic reach, partnering capacity and the ability to fund confirmatory development can determine whether a positive signal becomes a competitive asset.
White space around this program
- Sharper patient selection: prospective biomarker or phenotype definitions that identify who is most likely to benefit.
- Clinically interpretable endpoints: outcomes connecting activity with function, symptoms, survival or treatment burden.
- Comparator relevance: evidence against the most decision-relevant contemporary standard of care.
- Broader external validity: evidence across additional geographies, demographic groups and real-world settings.
- Operational differentiation: a development path that closes the readout gap without sacrificing safety or durability.
What to monitor next
Monitor recruitment, enrollment changes, protocol amendments, endpoint hierarchy, primary-completion timing, first result indexing, asset ownership and sponsor partnerships. A change in endpoint, population or ownership can alter the probability of success before a headline data release.
Bottom line
NCT07578116 provides a focused lens on Oligometastatic Disease development. Its value will be determined by whether Trastuzumab can convert the current Phase 3 design into evidence that is clinically meaningful, operationally credible and differentiated from competing programs.
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