Real-world Study of Pyrotinib-containing Regimens of Advanced HER2-positive Breast Cancer
For patients and families
In plain language
An automatic summary of structured registry data. It is an orientation aid, not a substitute for the official protocol or a physician assessment.
- What is being studied
- The protocol lists: Pyrotinib, Trastuzumab Rezetecan.
- Who it may be relevant to
- Registry conditions: HER2 + Breast Cancer, Advanced Breast Cancer. Basic parameters: from 18 years · All.
- What needs checking
- Age, condition and sex are only basic indicators. Prior treatment, laboratory values and other mandatory requirements appear in the eligibility criteria below.
- Where it takes place
- China
- Next step
- Save the trial, show it to the treating physician, and confirm current recruitment with the study center. Costs, documents and travel →
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Official title
Real-world Study of Pyrotinib-containing Regimens in First-line or Second-line Treatment of Advanced HER2-positive Breast Cancer
Overview
Given that pyrotinib has been proven to exert significant efficacy against HER2-positive advanced breast cancer in multiple Phase III studies, and the novel ADC drug disitamab vedotin has demonstrated potent anti-tumor activity, there remains insufficient real-world data on their sequential administration. This multicenter, prospective real-world study plans to enroll 500 patients with HER2-positive advanced breast cancer receiving first-line or second-line treatment. It aims to evaluate the efficacy and safety of sequential disitamab vedotin treatment after disease progression or intolerance to pyrotinib-based regimens (first-line: pyrotinib plus trastuzumab combined with chemotherapy; second-line: pyrotinib plus capecitabine). The primary endpoint is real-world second progression-free survival (rwPFS2), while secondary endpoints cover real-world progression-free survival (rwPFS), tumor response, overall survival (OS), time to treatment failure, safety profiles and patient-reported outcomes. It is currently expected to further validate the efficacy and safety of pyrotinib in patients with advanced HER2-positive breast cancer in the real-world setting, and to evaluate the efficacy and safety of recindopril trastuzumab following pyrotinib-containing regimens.
Interventions
- Drug Pyrotinib
Pyrotinib: administered orally once daily at a dose of 400 mg, 320 mg or 240 mg within 30 minutes after breakfast. A continuous administration of 21 days is defined as one treatment cycle. The dosage of pyrotinib will be adjusted by physicians according to the individual clinical conditions. Concomitant chemotherapeutic agents and other supportive care treatments are determined at the investigators' discretion in accordance with clinical practice guidelines and drug instructions. - Drug Trastuzumab Rezetecan
Trastuzumab Rezetecan: administered intravenously at a dose of 4.8 mg/kg on Day 1 of each cycle, with a 21-day treatment cycle.
Primary outcome measures
- rwPFS2 [Time frame: From the start of first administration of pyrotinib-containing regimen (first-line or second-line) until disease progression or death occurring after the initiation of subsequent trastuzumab Rezetecan therapy，assessed up to 60 months.]
Secondary outcome measures (4)
- rwPFS [Time frame: From the start of initial pyrotinib treatment until the occurrence of disease progression, death, or switch to trastuzumab rezetecan due to intolerable toxicity，assessed up to 60 months.]
- OS [Time frame: From the initiation of the study treatment regimen to death from any cause，assessed up to 60 months.]
- rwORR [Time frame: From the initiation of the study treatment regimen until disease progression or study withdrawal，assessed up to 60 months.]
- rwTTF [Time frame: From the initiation of the study treatment regimen until disease progression or study withdrawal，assessed up to 60 months.]
Eligibility criteria
Inclusion criteria
- Aged ≥ 18 years old;
- Histopathologically confirmed HER2-positive inoperable locally advanced or metastatic breast cancer;
- Patients with first-line or second-line advanced disease:
First-line advanced disease: no prior systemic therapy for locally advanced or metastatic disease. For patients who received neoadjuvant or adjuvant therapy, the disease-free interval (DFI) after the completion of the last chemotherapy or HER2-targeted therapy was more than 12 months; Second-line advanced disease: prior treatment with taxane combined with trastuzumab, with or without pertuzumab, in the advanced setting; or recurrence occurring during neoadjuvant/adjuvant therapy, or a disease-free interval (DFI) of ≤ 12 months after completion of the last neoadjuvant/adjuvant chemotherapy and HER2-targeted therapy;
- Planned to receive pyrotinib-containing regimen, and judged by investigators based on clinical practice to have potential subsequent treatment with Ruikang trastuzumab after failure of pyrotinib-containing therapy;
- Traceable medical records available throughout the treatment period.
Exclusion criteria
- Failure to sign the informed consent form;
- Pregnant or lactating females;
- Patients participating in any interventional clinical trial involving investigational drugs or marketed drugs at enrollment;
- Other conditions deemed ineligible for enrollment by the investigator's judgment.
Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.
Healthy volunteers: No
Study design
- Allocation
- Non-randomized
- Model
- Parallel assignment
- Masking
- Open label
- Primary purpose
- Treatment
Study locations
China · 1 center
- Peking University People's Hospital — Beijing
Identifiers
NCT: NCT07600164 · MA-BC-RWS-141