Retrospective analysis of pyrotinib in the treatment of HER2-Positive advanced breast cancer previously treated with trastuzumab and pertuzumab
NCT ID NCT07810634
First seen Sep 09, 2026 · Last updated Sep 09, 2026
Summary
In China, pyrotinib is used for patients with HER2-positive advanced breast cancer who have progressed on trastuzumab. As anti-HER2 antibody therapy has advanced from trastuzumab monotherapy to trastuzumab-pertuzumab dual-target treatment, few clinical studies have investigated pyrotinib's efficacy among patients pre-treated with this dual-antibody regimen. This is a retrospective observational cohort study, which aims to assess the efficacy and safety of pyrotinib in this patient cohort.
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Study facts
What this study's own registry entry says, in plain language.
- Participants
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About 200 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Sep 2026
- Expected to finish
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Mar 2027
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
Who is studied
Patients with HER2-positive advanced breast cancer who had previously been treated with either trastuzumab or pertuzumab, and who subsequently received pyrotinib-based therapy
- Ages
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * 1\. Diagnosis of unresectable locally advanced or metastatic breast cancer 2. Confirmed HER2-positive status, defined as immunohistochemistry (IHC) 3+ or IHC 2+ with positive in situ hybridization (ISH) results 3. Prior systemic treatment of trastuzumab and pertuzumab 4. Adequate baseline cardiac, bone marrow, renal, hepatic, and blood coagulation functions 5. Life expectancy \> 3 months 6. ECOG ≤3 Exclusion Criteria: * 1\. Incomplete clinical case data
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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The Fifth Medical Center of the PLA General Hospital
Beijing, Beijing Municipality, 100071, China
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Other studies related to the condition(s) this trial covers.
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