Clinical trial NCT05474690: A Study Comparing the Efficacy of TCbHP and ECHP-THP in the Neoadjuvant Treatment of HER2-positive Breast Cancer
Official title: A Non-inferior, Randomized Controlled Phase III Clinical Study Comparing the Efficacy of TCbHPand ECHP-THP in Neoadjuvant Treatment of Operable HER2-positive Breast Cancer
Study type: INTERVENTIONAL
Overall status: WITHDRAWN
Phase: PHASE3
Conditions: Breast Cancer
HER2-positive Breast Cancer
Keywords: Breast cancer
HER2
pathological complete remission
Lead sponsor: Henan Cancer Hospital
Sponsor class: OTHER_GOV
First posted: 2022-07-26
Enrollment: 0
Sex: FEMALE
Minimum age (years): 18
Maximum age (years): 65
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Allocation: RANDOMIZED
Intervention model: PARALLEL
Primary purpose: TREATMENT

Brief summary: In 2020, the incidence of breast cancer surpassed that of lung cancer for the first time, becoming the number one cancer in the world. HER2 is an important prognostic indicator and therapeutic target for breast cancer. HER2-overexpressing breast cancer accounts for about 20% to 30% of all breast cancer patients. Targeted therapy for HER2 protein is the core treatment for this type of breast cancer. At present, the neoadjuvant treatment mode of trastuzumab and pertuzumab dual-target chemotherapy has become the standard neoadjuvant treatment for high-risk HER2-positive breast cancer. For patients with early-stage high-risk or locally advanced HER2-positive breast cancer, whether standard neoadjuvant regimen without anthracycline can achieve the same therapeutic effect compared with regimen containing anthracycline is still inconclusive.Therefore, this study aimed to compare the efficacy and safety of two neoadjuvant treatment regimens, TCbHP\*6 and ECHP\*4-THP\*4, in the neoadjuvant treatment of HER2-positive breast cancer through a randomized controlled phase 3 clinical trial.

Detailed description: Subjects were screened according to inclusion and exclusion criteria. Subjects who met the inclusion conditions were randomly divided into TCbHP group and ECHP-THP group according to 1:1.

Stratified at randomization by the following factors: T, N, HER2 expression (HER2 protein 3+ vs HER2 protein 2+ but FISH+), and hormone receptor status (HR positive vs HR negative).

1. Drug dose of TCbHP regimen: docetaxel 75 mg/m2 + carboplatin (AUC=6) + trastuzumab (first loading dose 8 mg/kg, sequential maintenance dose 6 mg/kg) + Pascal Tocilizumab (initial loading dose of 840 mg, followed by maintenance dose of 420 mg), every 21 days as a cycle.
2. Dosage of ECHP-THP regimen: epirubicin 90mg/m2 + cyclophosphamide 600mg/m2 followed by docetaxel 90mg/m2, trastuzumab (the first loading dose of 8 mg/kg, followed by maintenance The dose is 6 mg/kg) + Pertuzumab (the initial loading dose of 840 mg, and the sequential maintenance dose of 420 mg), every 21 days as a cycle.

Eligibility criteria: Inclusion Criteria:

1. 18 years ≤ age ≤ 65 years, Performance Status- Eastern Cooperative Oncology Group (ECOG) 0-1；
2. Clinical T2-T4d, or T1c with axillary LN+；
3. HER2 + invasive breast cancer confirmed by histopathology Note: HER2 expression positive refers to the tumor cells with immunohistochemical staining intensity of 3 + or confirmed positive by fluorescence in situ hybridization \[fish\] at least once during the pathological detection/review of primary tumor in the Department of pathology of participating research center hospital；
4. Clinically measurable lesions: measurable lesions revealed by ultrasound, molybdenum target or MR (optional) within 1 month before randomization
5. Organ and bone marrow function test within one month before chemotherapy showed no chemotherapy contraindication： Absolute value of neutrophil count ≥ 2.0×10\^9 / L Hemoglobin ≥ 100g / L Platelet count ≥ 100×10\^9 / L Total bilirubin \< 1.5 ULN (upper limit of normal value) Creatinine \< 1.5 × ULN AST/ALT \< 1.5×ULN
6. Echocardiography: left ventricular ejection fraction (LVEF ≥ 55%)；
7. For women of childbearing age, serum pregnancy test was negative 14 days ；
8. Signed the informed consent form prior to patient entry；

Exclusion Criteria:

1. Stage IV (metastatic) breast cancer;
2. supraclavicular lymph node metastasis；
3. For this disease, chemotherapy, endocrine therapy, targeted therapy, reflex therapy, etc. have been received;
4. The patient has a second primary malignancy other than adequately treated skin cancer;
5. The patient has undergone major surgical procedures not related to breast cancer within 4 weeks prior to enrollment, or the patient has not fully recovered from such surgical procedures;
6. The patient has severe heart disease or discomfort, including but not limited to the following:Diagnosed history of heart failure or systolic dysfunction (LVEF \< 50%)；High-risk uncontrolled arrhythmias；Angina pectoris requiring antianginal medication；Clinically significant heart valve disease；ECG showing transmural myocardial infarction；Poorly controlled high blood pressure；
7. Because the patient has other serious and uncontrollable medical diseases, the investigator believes that chemotherapy is contraindicated;
8. Known history of allergy to the drug components of this regimen; history of immunodeficiency, including HIV positive test, or other acquired or congenital immunodeficiency diseases, or a history of organ transplantation;

Primary outcomes:
measure: Pathological Complete Response (pCR)
timeFrame: up to 24 weeks
Secondary outcomes:
measure: Number of treatment-related adverse events assessed by CTCAE v4.0
timeFrame: up to 24 weeks
measure: Number of participants with treatment-related adverse events as assessed by CTCAE v4.0
timeFrame: up to 24 weeks
measure: ORR
timeFrame: up to 24 weeks
measure: DFS
timeFrame: up to 60 months
measure: OS
timeFrame: up to 120 months
Other outcomes:
measure: gene mutation rate
timeFrame: up to 24 weeks
Locations:
city: Zhengzhou
country: China
facility: Henan cancer hospital
state: Henan
Study officials:
affiliation: Henan Cancer Hospital
name: Zhenzhen Liu
role: PRINCIPAL_INVESTIGATOR
References: