Pyrotinib Plus Neoadjuvant Chemotherapy in HR+/HER2-, HER4-High Breast Cancer

NCT ID: NCT04872985

Last Updated: 2026-01-06

Basic Information

• Recruitment Status: ACTIVE_NOT_RECRUITING
• Clinical Phase: PHASE2
• Total Enrollment: 140 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2021-04-20
• Study Completion Date: 2028-12-31

Brief Summary

This is a Phase II, single-center, double-blind, placebo-controlled, randomized study of Pyrotinib in combination with Doxorubicin/Epirubicin and Cyclophosphamide followed by Docetaxel/nab-Paclitaxel as neoadjuvant therapy for women with hormone receptor positive HER2-negative stage II to III breast cancer. Patients randomized to the study arm/control arm will receive standard neoadjuvant chemotherapy in combination with pyrotinib/placebo, respectively. The primary endpoint of the study is the residual cancer burden 0/I (RCB 0/I) and total pathological complete response (tpCR) rate. Secondary endpoints include the breast pCR (bpCR) rate, objective response rate(ORR), event-free survival (EFS), overall survival (OS), rate of change in the Ki-67 proliferation index, correlations between potential biomarkers and treatment efficacy, and toxicity.

Detailed Description

Pyrotinib is an oral, irreversible pan-ErbB receptor tyrosine kinase inhibitor (TKI) with activity against epidermal growth factor receptor HER1(EGFR), HER2 and HER4. Improvement of the chemotherapy efficacy and good tolerability have been shown by several stage II and III clinical trials in both the neoadjuvant and metastasis setting in HER2-positive breast cancers. Yet, the anti-tumor effect of Pyrotinib by targeting HER4 has not been determined. Preclinical studies show that HER4 is relatively highly expressed in hormone receptor positive and HER2-negative(HR+/HER2-) breast cancers. In MCF7 cell lines, Pyrotinib effectively repressed phosphorylation of MAPK and Akt signal transduction pathways to inhibit tumor cell proliferation. In HR+/HER2- tumor xenografts, Pyrotinib has been observed to inhibit tumor growth in a dose-dependent manner (unpublished data). Taken together, the data support the rationale that Pyrotinib may be efficacious in HER4 high expressed HR+/HER2- breast cancer and in combination with chemotherapy may lead to a better RCB 0/I and pCR rate in the neoadjuvant setting.

The study is a two-arm design with a 1:1 allocation ratio (equal numbers of patients randomized to Arms 1, 2). The sample size will be up to 140 patients with about 70 evaluable patients in each arm. Accrual is expected to occur over 48 months. Patients will be randomized to one of the two neoadjuvant therapy regimens: Patients in Arm 1 will be assigned to receive 400 mg Pyrotinib orally once per day with four cycles of epirubicin (100 mg/m2) (or doxorubicin hydrochloride liposome injection 30mg/m2) and cyclophosphamide (600 mg/m2) intravenously, once every 3 weeks, followed by four cycles of docetaxel (100 mg/m2) intravenously, once every 3 weeks(or nab-paclitaxel 260mg/m2 q3w, or 12 cycles of weekly nab-paclitaxel 120 mg/m2) . Dosage reduction of pyrotinib is permitted from 400 mg to 320 mg or 240 mg if Pyrotinib-related AEs are experienced. In Arm 2 (control), Pyrotinib will be replaced by 400mg placebo provided by the same pharmacy company.

In all arms, clinical response will be evaluated by breast MRI. The primary endpoint will be assessed with the paraffin embedded pathological specimens collected from surgery. Submission of tumor samples for the correlative science studies will be optional for all patients. For patients who agree, pathological sections of core biopsy specimen before treatment (after the patient has signed the consent form and has been screened for eligibility) and pathological sections of surgery residual disease specimen after the completion of the treatment are collected. In addition, a blood sample collected after randomization (before the start of study therapy and after the completion of the neoadjuvant therapy) will also be required for the correlative studies.

Conditions

Breast Cancer; Hormone-receptor Positive Breast Cancer

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: PARALLEL
• Primary Study Purpose: TREATMENT
• Blinding Strategy: QUADRUPLE

Study Groups

Arm 1: Pyrotinib+ AC/EC followed by T

400 mg Pyrotinib orally once per day with four cycles of epirubicin (100 mg/m2) (or doxorubicin hydrochloride liposome injection 30mg/m2) and cyclophosphamide (600 mg/m2) intravenously, once every 3 weeks, followed by four cycles of docetaxel (100 mg/m2) intravenously, once every 3 weeks (or 260mg/m2 nab-paclitaxel once every 3 weeks for 4 cycles, or 12 cycles of weekly nab-paclitaxel 120mg/m2 intravenously). Pyrotinib starts with a dose of 240 mg once daily for one week, followed by 320 mg once daily for the next week, before transitioning to 400 mg once daily as maintenance therapy.

Group Type: EXPERIMENTAL

Pyrotinib

Intervention Type: DRUG

400 mg orally once per day. Pyrotinib starts with a dose of 240 mg once daily for one week, followed by 320 mg once daily for the next week, before transitioning to 400 mg once daily as maintenance therapy.

Epirubicin

Intervention Type: DRUG

100 mg/m2,q3W\*4

Doxorubicin Hydrochloride Liposome Injection

Intervention Type: DRUG

30mg/m2, q3w\*4

Cyclophosphamide

Intervention Type: DRUG

600 mg/m2, q3w\*4

Docetaxel

Intervention Type: DRUG

100 mg/m2, q3w\*4

Nab paclitaxel

Intervention Type: DRUG

120mg/m2 qw\*12 or 260mg/m2 q3w\*4

Arm 2: Placebo+ AC/EC followed by T

400 mg placebo orally once per day with four cycles of epirubicin (100 mg/m2) (or doxorubicin hydrochloride liposome injection 30mg/m2) and cyclophosphamide (600 mg/m2) intravenously, once every 3 weeks, followed by four cycles of docetaxel (100 mg/m2) intravenously, once every 3 weeks (or 260mg/m2 nab-paclitaxel once every 3 weeks for 4 cycles, or 12 cycles of weekly nab-paclitaxel 120mg/m2 intravenously) .

Group Type: PLACEBO_COMPARATOR

Epirubicin

Intervention Type: DRUG

100 mg/m2,q3W\*4

Doxorubicin Hydrochloride Liposome Injection

Intervention Type: DRUG

30mg/m2, q3w\*4

Cyclophosphamide

Intervention Type: DRUG

600 mg/m2, q3w\*4

Docetaxel

Intervention Type: DRUG

100 mg/m2, q3w\*4

Nab paclitaxel

Intervention Type: DRUG

120mg/m2 qw\*12 or 260mg/m2 q3w\*4

Placebo

Intervention Type: DRUG

400 mg orally once per day

Interventions

Pyrotinib

400 mg orally once per day. Pyrotinib starts with a dose of 240 mg once daily for one week, followed by 320 mg once daily for the next week, before transitioning to 400 mg once daily as maintenance therapy.

Intervention Type: DRUG

Epirubicin

100 mg/m2,q3W\*4

Intervention Type: DRUG

Doxorubicin Hydrochloride Liposome Injection

30mg/m2, q3w\*4

Intervention Type: DRUG

Cyclophosphamide

600 mg/m2, q3w\*4

Intervention Type: DRUG

Docetaxel

100 mg/m2, q3w\*4

Intervention Type: DRUG

Nab paclitaxel

120mg/m2 qw\*12 or 260mg/m2 q3w\*4

Intervention Type: DRUG

Placebo

400 mg orally once per day

Intervention Type: DRUG

Other Intervention Names

E; A; C; T

Eligibility Criteria

Inclusion Criteria

• Presenting with histological(by core needle biopsy or by limited incisional biopsy) proven hormone receptor positive (ER≥10% and/or PR ≥1%), HER2 negative(IHC ≤2+ and/or FISH-) , stage II/ III breast cancer.
• Have clinical indication for neoadjuvant therapy.
• HER4 IHC score ≥ 4.
• Measurable disease (breast and/or lymph nodes).
• The Eastern Cooperative Oncology Group (ECOG) performance status must be 0 or 1.
• Adequate bone marrow function (within 4 weeks prior to registration): WBC≥3.0x109/l, neutrophils ≥1.5 x 109/l, platelets ≥100 x 109/l.
• Adequate liver function (within 4 weeks prior to registration): bilirubin ≤1.5 x upper limit of normal (UNL) range, ALAT and/or ASAT ≤2.5 x UNL, Alkaline Phosphatase ≤5 x UNL.
• Adequate renal function (within 4 weeks prior to registration): the calculated creatinine clearance should be ≥50 ml/min.
• Patients must have the ability to swallow oral medication.
• Without history of any kind of treatment to known malignancy (solid tumor or hematologic).
• Written informed consent.
• Accessible for treatment and follow-up.

Exclusion Criteria

• Evidence of stage IV breast cancer.
• Contralateral invasive breast cancer or Inflammatory breast cancer.
• History of non-breast malignancies (except for in situ cervical cancers, basal cell carcinoma of the skin, squamous cell carcinomas of the skin or thyroid papillary carcinoma that had received curative treatment before enrollment) within 5 years prior to randomization.
• Known metastatic disease from any malignancy (solid tumor or hematologic).
• Serious other diseases as infections (hepatitis B, C and HIV), recent myocardial infarction, clinical signs of cardiac failure or clinically significant arrhythmias or on screening, any of the following cardiac parameters: bradycardia (heart rate <50 at rest) or QTcF ≥450 msec.
• Known hypersensitivity reaction to any of the components of the treatment.
• Pregnancy or lactation at the time of randomization.
• Medical or psychological condition which in the opinion of the investigator would not permit the patient to complete the study or sign meaningful informed consent.

• Minimum Eligible Age: 18 Years
• Maximum Eligible Age: 75 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

Jiangsu HengRui Medicine Co., Ltd.

INDUSTRY

Sponsor Role: collaborator

Sun Yat-Sen Memorial Hospital of Sun Yat-Sen University

OTHER

Sponsor Role: lead

Responsible Party

Erwei Song, M.D., Ph.D.

MD.Ph.D.

Responsibility Role: PRINCIPAL_INVESTIGATOR

Principal Investigators

Erwei Song, MD.,Phd.

Role: PRINCIPAL_INVESTIGATOR

Sun Yat-Sen Memorial Hospital of Sun Yat-Sen University

Locations

Sun-Yat-Sen Memorial Hospital of Sun-Yat-Sen University

Guangzhou, Guangdong, China

Countries

China

Other Identifiers

MA-BC-II-018

Identifier Type: -

Identifier Source: org_study_id