Personalized Detection of ctDNA for Patients With HER2-Positive Metastatic Breast Cancer Patients Who Achieved Durable Response to Anti-HER2 Treatment
Public ClinicalTrials.gov record NCT06663787. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Official title
Personalized Detection of ctDNA for Patients With HER2-Positive Metastatic Breast Cancer Who Achieved Durable Response by Anti-HER2 Treatment
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
Anti-HER2 therapy, such as trastuzumab and pertuzumab, has significantly improved long-term survival in HER2-positive breast cancer. The updated data of the CLEOPATRA trial showed significant Kaplan-Meier curves, suggesting the potential for a cure. However, the efficacy of maintenance therapy in long-term responders remains unexplored. This study will assess MRD in unresectable HER2-positive breast cancer cases with long-term response using the Signatera™ ctDNA assay, which could contribute to future treatment strategy development.
Study identification
- NCT ID
- NCT06663787
- Recruitment status
- Active, not recruiting
- Study type
- Observational
- Phase
- Not listed
- Enrollment
- 50 participants
Conditions and interventions
Conditions
Eligibility (public fields only)
- Age range
- 20 Years and older
- Sex
- Female
- Healthy volunteers
- Healthy volunteers not accepted
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Mar 31, 2024
- Primary completion
- Dec 30, 2026
- Completion
- Dec 30, 2026
- Last update posted
- May 12, 2026
2024 – 2026
United States locations
- U.S. sites
- 1
- U.S. states
- 1
- U.S. cities
- 1
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Natera | San Carlos | Texas | 94070 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
Non-U.S. locations
This page focuses on the U.S. directory. The official record also lists 3 non-U.S. sites.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT06663787, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted May 12, 2026 · Synced Sep 7, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT06663787 live on ClinicalTrials.gov.