Pyrotinib

This is an open-label, single-center, exploratory, Phase Ib/II clinical trial evaluating the safety and efficacy of entinostat combined with pyrotinib and endocrine therapy in patients with advanced hormone receptor-positive (HR+) and human epidermal growth factor receptor 2-positive (HER2+) breast cancer who have failed prior trastuzumab-based therapy. The study consists of two parts: Part I (Phase Ib) employs a 3+3 dose-escalation design to determine the dose-limiting toxicity (DLT), maximum tolerated dose (MTD), and recommended Phase II dose (RP2D) of entinostat when given in combination with pyrotinib (400 mg daily) and endocrine therapy. Part II (Phase II) uses a Simon two-stage design to further evaluate the efficacy and safety of the combination at the RP2D. The primary efficacy endpoint is progression-free survival (PFS) based on RECIST v1.1. A total of approximately 79-94 participants will be enrolled.

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.

This is a multi-center real-world study, in which patients who meet the inclusion criteria will receive treatment with Pyrotinib + Trastuzumab + Taxanes. Taxanes will be used for 6-8 cycles or discontinued due to intolerable Adverse Events (AEs), after which Capecitabine will be used for rhythmic chemotherapy combined with Pyrotinib + Trastuzumab. The aim is to explore the efficacy and safety of Pyrotinib, Trastuzumab, and Taxanes in treating Trastuzumab-treated HER2+ Advanced Breast Cancer (ABC).

A single-arm, multicenter, real-world observational study of pyrotinib combined with trastuzumab for maintenance therapy after first-line TH (P) therapy for HER2+ABC

This study is a prospective, open, multi-center, single arm trial. The treatment group will receive six cycles of docetaxel, carboplatin combined with Inetetamab and Pyrotinib before surgery. By focusing on tpCR (ypT0/is, ypN0) evaluated by pathology, the efficacy of docetaxel, carboplatin combined with Inetetamab and Pyrotinib in the preoperative treatment of locally advanced HER2-positive breast cancer will be evaluated. During long-term follow-up, event-free survival (EFS), disease-free survival (DFS), distant metastasis-free survival (DDFS), overall survival (OS), central nervous system disease-free survival (CNSDFS) under this treatment regimen will be evaluated, and the efficacy-related biomarkers will be explored. The cardiotoxicity of Inetetamab and Pyrotinib in the treatment of breast cancer is also be evaluated.

This is a prospective, randomised, controlled, multicentre study to evaluate the efficacy and safety of continuous versus intermittent pyrotinib therapy in patients with human epidermal growth factor receptor (HER2)-positive advanced breast cancer.

This prospective, response-guided phase II study investigates individualized neoadjuvant treatment strategies for patients with human epidermal growth factor receptor 2 (HER2)-positive early breast cancer. After receiving neoadjuvant dual-HER2-targeted therapy with chemotherapy, patients are evaluated for their treatment response. Those achieving an adequate response continue the therapy, whereas patients with a suboptimal response transition to an intensified investigational regimen incorporating novel targeted agents. This adaptive approach aims to optimize pathologic response, minimize unnecessary toxicity, and explore more effective treatment options for individuals with insufficient benefit from conventional neoadjuvant therapy.

ExteNET study explored neratinib prolong anti-HER2 therapy after trastuzumab therapy found that it can improve disease-free survival in patients with lymph nodes positive; In addition, the subgroup of patients with residual tumors after neoadjuvant therapy was found to improve the survival. However, no conclusive conclusions were reached. However, since the study was carried out early so only trastuzumab treatment was used, it is urgent to carry out research that is more in line with current clinical practice and bring more benefits to patients. To explore whether pyrotinib can further reduce the risk of recurrence from previously diagnosed HER2-positive breast cancer after treatment with trastuzumab and pertuzumab or T-DM1.

This is a phase II trial evaluating the efficacy and safety of SHR-A1811 monotherapy or combined with pyrotinib maleate in Stage II-III HER2-positive breast cancer. Subjects will receive the neoadjuvant therapy of SHR-A1811 monotherapy or combined with pyrotinib for six cycles, and then undergo surgery within 4 weeks after neoadjuvant therapy. Efficacy will be assessed every 2 cycles.

The goal of this multicentre, randomized, double-blind controlled, phase III clinical trial is to compare the efficacy and safety of disitamab vedotin in combination with pyrotinib versus the standard first-line treatment of paclitaxel in combination with trastuzumab and pertuzumab (THP) for newly diagnosed recurrent/metastatic Human epidermal growth factor receptor 2 (HER2) positive advanced breast cancer, and to explore the impact of biomarkers on clinical efficacy and safety. The main questions it aims to answer are: * Analyse the efficacy and safety of disitamab vedotin in combination with pyrotinib versus the standard first-line treatment of THP. * Explore the impact of biomarkers on clinical efficacy and safety of the combination of disitamab vedotin in combination with pyrotinib treatment. Participants in the experimental group will receive disitamab vedotin in combination with pyrotinib for 6-8 cycles (each cycle lasting 28 days), followed by maintenance treatment with trastuzumab in combination with pyrotinib. Participants in the control group will receive paclitaxel in combination with trastuzumab and pertuzumab for 6-8 cycles (each cycle lasting 21 days), followed by maintenance treatment with trastuzumab and pertuzumab. Researchers will compare disitamab vedotin in combination with pyrotinib versus the standard first-line treatment of paclitaxel in combination with trastuzumab and pertuzumab to see if disitamab vedotin in combination with pyrotinib could be a new option for first-line treatment of HER2-positive metastatic breast cancer.

In phase Ib, our study is aimed to evaluate the safety and tolerance of SHR-A1811 combined with pyrotinib in breast cancer with brain metastasis, and confirm the recommended phase 2 dose combined with preliminary results of efficacy. In phase II, our study is aimed to evaluate the efficacy and safety of SHR-A1811 combined with pyrotinib and bevacizumab at RP2D in breast cancer with brain metastasis.

This multicenter, Phase II study (RADIANT-BC01) evaluates the efficacy and safety of Disitamab Vedotin (RC48) in combination with either bevacizumab or pyrotinib in adult patients with HER2-positive metastatic breast cancer whose disease has progressed on prior trastuzumab deruxtecan (T-Dxd) therapy. Eligible participants will be randomized 1:1 to receive RC48 plus bevacizumab (7.5 mg/kg IV every 2 weeks) or RC48 plus pyrotinib (320 mg orally once daily). Treatment continues until disease progression, unacceptable toxicity, withdrawal of consent, or initiation of new anticancer therapy. The primary endpoint is objective response rate (ORR); key secondary endpoints include progression-free survival (PFS), disease control rate (DCR), duration of response (DOR), overall survival (OS), and safety. This study aims to identify new post-T-Dxd treatment options and improve outcomes for patients with advanced HER2-positive breast cancer.

This study aimed to evaluate the use of SHR-A1811 in HER2-expression Advanced Breast Cancer patients with brain metastases.

Efficacy and Safety of Dalpiciclib Combined with Anti-HER2 Targeted Therapy and Endocrine Therapy as First-line Maintenance Treatment for Patients with Recurrent or Metastatic Hormone-Receptor-Positive, HER2-positive Breast Cancer.

The purpose of this study is to establish a prospective, single-center platform research based on clinical subtypes to explore precision neoadjuvant therapy in patients with operable breast cancer who met the indications for neoadjuvant chemotherapy and by the update of basic translational research in the center, especially the refinement of typing, the discovery of new targets and the development of novel targeted drugs, verified the effectiveness of new targeted drugs in neoadjuvant therapy.