Neoadjuvant Paclitaxel Plus Epirubicin Versus Vinorelbine Plus Epirubicin in Breast Cancer With TEKT4 Variations

Study Overview
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Brief Summary
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The purpose of this study is to compare the efficiency and safety between paclitaxel combined with epirubicin and vinorelbine combined with epirubicin when used in neoadjuvant chemotherapy for locally advanced (IIb-IIIc) HER2-negative breast cancer with TEKT4 variations.

Detailed Description
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Taxane-based chemotherapy is the cornerstone treating breast cancer, however remarkable percentage of breast cancer patients presents with primary or secondary taxane resistance. Currently no established biomarker has been reported clinically for predicting taxane sensitivity. Our previous study indicated that TEKT4 variation decreased the stability of intracellular microtubule, and TEKT4 variant cells behaves higher resistance to microtubule-stabilizing agents such as taxane, while enhanced sensibility to microtubule depolymerization agents such as vinorelbine. This study is intended to confirm that TEKT4 variation predicts the prognosis of taxane-based chemotherapy through the prospective clinical trials. This study intends to evaluate the efficiency and safety of two neoadjuvant therapies: paclitaxel combined with epirubicin and vinorelbine combined with epirubicin, in treating locally advanced (IIb-IIIc) HER2-negative breast cancer with TEKT4 variation. Primary endpoint of study: pathologic Complete Response (pCR). Secondary endpoints of the study: Objective response rate (CR+PR). Exploratory endpoint: Based on pretreatment tumor and matched blood samples, the correlation between biomarker and efficiency is explored. This open single center prospective randomized control study includes patients locally advanced (IIb-IIIc) HER2-negative patients with TEKT4 variation diagnosed with histopathology and Sanger sequencing. Patients randomized to Group A or Group B to receive respective neoadjuvant chemotherapy. Among which Group A: PE x 4 cycles (paclitaxel + epirubicin), paclitaxel: 80 mg/m2 IV on day 1, 8 and 15; epirubicin: 90 mg/m2 IV on day 1, and dosing interval is 21 days. Group B: NE x 4 cycles (vinorelbine + epirubicin), vinorelbine: 25 mg/m2 IV on day 1, 8 and 15; epirubicin: 90 mg/m2 IV on day 1, and dosing interval is 21 days. Patients of both groups were performed with diagnostic puncture before treatment and over half of treatment course in order to obtain information about dynamic change of Ki67 and other parameters; Surgery will be performed after 4 cycles of chemotherapy, followed with subsequent adjuvant therapy.

Official Title
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Phase II Randomized Clinical Trial and Biomarker Analysis of Paclitaxel Plus Epirubicin Versus Vinorelbine Plus Epirubicin as Neoadjuvant Chemotherapy in Locally Advanced HER2-Negative Breast Cancer With TEKT4 Variations

Conditions
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Breast Cancer

Intervention / Treatment
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* Drug: Vinorelbine plus Epirubicin
* Drug: Paclitaxel plus Epirubicin


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Age: 18-70 years old Expected survival > 12 months Baseline ECOG Performance Status rating 0-1 Naïve to chemotherapy or hormonal treatments Radiologically confirmed and biopsy diagnosed invasive ductal carcinoma of breast and prepared to be treated surgically Locally advance breast cancer of stage IIb-IIIc HER-2 negative confirmed by immunohistochemistry, Ki-67≥20% TEKT4 variation confirmed by DNA sequencing No concurrent malignancy (except controlled cervical carcinoma in situ or basal cell carcinoma of skin) Patients have measurable lesions (according to RECIST v1.1 criteria) Intention to cooperate with baseline puncture and neoadjuvant therapy No advanced metastasis or metastasis involving brain or liver Adequate bone marrow function, blood routine examination shows neutrophil count ≥ 1.5x109/L, hemoglobin level ≥ 100 g/L, Platelets ≥ 100 x 109/L Adequate liver and kidney function, serum aminotransferase (AST) ≤ 60U/L, serum total bilirubin ≤ 2.5 times ULN, serum creatinine ≤110μmol/L, urea nitrogen ≤7.1mmol/L No coagulation abnormality Normal heart function, with normal ECG and LVEF ≥ 55% Women of childbearing age agree to take reliable contraceptive measures during clinical trials, and negative serum or urine pregnancy test within 7 days prior to administration No coagulation abnormality Sign the informed consent statement and voluntarily receive follow-ups, treatments, laboratory tests and other research procedures according to protocol. Exclusion Criteria: Previous regional or systemic treatment for breast cancer (include but not limited to chemotherapy, radiotherapy, targeted therapy, other clinical trials) Inflammatory breast cancer, bilateral breast cancer or breast cancer already with distant metastasis Complicated with uncontrolled lung disease, severe infection, active peptic ulcer, blood clotting disorders, severe uncontrolled diabetes, connective tissue disorders or bone marrow suppression, and intolerance to neoadjuvant therapy or related treatment Peripheral neuropathy >1 degree caused by any reason History of congestive heart failure, uncontrolled or symptomatic angina, arrhythmias or history of myocardial infarction, refractory hypertension (systolic blood pressure > 180 mmHg or diastolic blood pressure > 100 mmHg); Breast cancer during lactation or pregnancy Unwillingly to receive baseline puncture or neoadjuvant therapy Mental illness or incompliance to treatment caused by other reasons Known history of severe hypersusceptibility to any agents used in the treatment protocol Patients received major surgery or suffered from severe trauma within 2 months of first administration Currently enroll or recently used (30 days within enrollment) other agent under research or involved in other trial Known to be infected with human immunodeficiency virus (HIV) Other circumstances considered to be inappropriate to be enrolled by researchers

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 70 Years

Sexes Eligible for Study
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Female

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Active Comparator: Paclitaxel plus Epirubicin<br>Paclitaxel plus Epirubicin for 4 cycles, paclitaxel 80 mg/m2 IV on day 1, 8 and 15, epirubicin 90 mg/m2 IV on day 1, and dosing interval is 21 days. | Drug: Paclitaxel plus Epirubicin<br>* standard neoadjuvant chemotherapy<br>|
| Experimental: Vinorelbine plus Epirubicin<br>Vinorelbine plus Epirubicin for 4 cycles, vinorelbine 25 mg/m2 IV on day 1, 8 and 15, epirubicin 90 mg/m2 IV on day 1, and dosing interval is 21 days. | Drug: Vinorelbine plus Epirubicin<br>* Evaluate the efficiency and safety of vinorelbine plus epirubicin as neoadjuvant chemotherapy in locally advanced HER2-negative breast cancer with TEKT4 variations<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| pathologic Complete Response (pCR) | pCR is defined as the absence of noninvasive tumor residuals in breast and axillary lymph nodes (ypT0/is ypN0) after neoadjuvant therapy. | 3 years | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Objective Response Rate (ORR) | ORR is defined as the proportion of patients who achieved a complete response (CR) or partial response (PR) according to Response Evaluation Criteria in Solid Tumors (RECIST) version 1.1. | 3 years | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Breast cancer, Neoadjuvant chemotherapy, TEKT4