Neoplasms

Skin and Connective Tissue Diseases

All Conditions

Breast Neoplasms

Breast Diseases

Skin Diseases

Antineoplastic Agents

All Drugs and Chemicals

Antirheumatic Agents

Anti-Infective Agents

Paclitaxel

Cyclophosphamide

Docetaxel

Albumin-Bound Paclitaxel

Epirubicin

Tubulin Modulators

Antimitotic Agents

Immunosuppressive Agents

Immunologic Factors

Antineoplastic Agents, Alkylating

Alkylating Agents

Anti-Bacterial Agents

Antibiotics, Antitubercular

Enzyme Inhibitors

Cycle 1-4: Epirubicin i.v. 90 mg/m2, Cyclophosphamide i.v. 600 mg/m2 (One cycle = 21 days); Cycle 5-8: Docetaxel i.v. 100mg/m2 (One cycle = 21 days) .

Cycle 1-4: Epirubicin i.v. 90 mg/m2, Cyclophosphamide i.v. 600 mg/m2 (One cycle = 14 days); Cycle 5-8:Paclitaxel i.v. 175mg/m2 (One cycle = 14 days) .

Cyclophosphamid

Yiding Chen

Huihui Chen

Recent clinical studies showed that breast cancer patients especially for those with lymph node metastasis may benefit from dose-dense chemotherapy, like adriamycin and cyclophosphamide (AC) q2w×4→ paclitaxel (P) q2w×4. However, the studies on dose-dense (dd) regimen chemotherapy is mostly based on postoperative adjuvant chemotherapy and the optimum of dose-dense chemotherapy has not been determined for Chinese population with HER2-negative breast cancer patients. In our study, a prospective, randomized, open-label, multi-center clinical study was conducted to compare the efficacy and safety of dose-dense chemotherapy regimen (dd epirubicin/cyclophosphamide (EC) followed by dd paclitaxel (P)) and conventional chemotherapy (epirubicin/cyclophosphamide (EC) followed by docetaxel (T)) as preoperative neoadjuvant chemotherapy in the treatment of HER2-negative breast cancer in Chinese population.

Neoadjuvant chemotherapy refers to systemic chemotherapy as the first step for treating breast cancer patients before planned local treatment like surgery for those without distant metastasis. Randomized trials of chemotherapy have demonstrated similar long-term outcomes when patients were given the same treatment preoperatively compared with postoperatively. It is reported that preoperative neoadjuvant chemotherapy can facilitate breast conservation, render inoperable tumors operable and provide important prognostic information at an individual patient level based on response to therapy.

According to the recommendation of National Comprehensive Cancer Network (NCCN) guideline, patients with inoperable breast cancer, such as inflammatory breast cancer, N3 nodal disease and T4 tumors are candidates for preoperative systemic therapy. As for those operable patients with HER2-positive disease and triple-negative breast cancer (TNBC), if T ≥2 or N ≥1, or large primary tumor relative to breast size in a patient who desires breast conservation, neoadjuvant chemotherapy is also preferred. Based on the results of NSABP-27 and Aberdeen clinical trials, chemotherapeutic drugs including taxanes (such as docetaxel, paclitaxel) and anthracyclines (such as doxorubicin, epirubicin) have become the standard neoadjuvant chemotherapy regimens for early operable patients and for HER2-negative breast cancer patients, anthracyclines combined with cyclophosphamide followed by docetaxel is mostly common used.

Limited to myelosuppression and bone marrow repair, conventional chemotherapy cycle is usually set once every 3-4 weeks. Recent years, the application of granulocyte colony stimulating factor (G-CSF), which can shorten the recovery time of leukocytes, enables dose-dense chemotherapy (maximum tolerable dose, every 2 weeks as a cycle) to become a treatment option for high-risk patients. The concept of dose-dense chemotherapy is based on a mathematical model developed by Norton and Simon, and relies on an understanding of Gompertzian model of tumor growth. Gompertzian kinetics explain that human neoplasms do not grow in an exponential fashion, instead the cell-doubling time becomes progressively longer as the tumor growth. Thus, cancer treatments that reduce the size of a tumor can promote faster tumor regrowth between treatments indirectly. So Norton-Simon hypothesis suggests that the most effective strategy is to expose the tumor to cytotoxic agents as frequently as possible to minimize regrowth between cycles.

The CALGB 9471 used a randomized, 2×2 factorial design to prospectively compare sequential doxorubicin, paclitaxel, cyclophosphamide with concurrent doxorubicin and cyclophosphamide followed by paclitaxel, and to compare dose-dense schedules with conventional schedules. A total of 2005 node-positive, previously untreated patients were enrolled. At a median follow-up of 36 months, dose-dense treatment significantly improved disease-free survival (DFS) and overall survival (OS) compared with conventionally scheduled treatment. The GIM2 study also demonstrated that dose-dense adjuvant chemotherapy (FEC-P and EC-P every 2 weeks a cycle) improved DFS and OS compared with standard interval chemotherapy (every 3 weeks a cycle). However, the studies on dose-dense chemotherapy is mostly based on postoperative adjuvant chemotherapy. We aim to conduct a prospective, randomized, open-label, multi-center clinical study to compare the efficacy and safety of dose-dense chemotherapy (dd epirubicin/cyclophosphamide (EC) followed by dd paclitaxel (P)) and conventional chemotherapy (epirubicin/cyclophosphamide (EC) followed by docetaxel (T)) as preoperative neoadjuvant chemotherapy in the treatment of HER2-negative breast cancer in Chinese population.

Efficacy and Safety of Dose-dense Chemotherapy (ddEC-ddP) for Neoadjuvant Chemotherapy of HER2-negative Breast Cancer

Efficacy and Safety of Dose-dense Epirubicin and Cyclophosphamide Plus Paclitaxel as Neoadjuvant Chemotherapy for HER2-negative Early Breast Cancer：a Multicenter Randomized Controlled Trial

pCR is defined as the absence of noninvasive tumor residuals in breast and axillary lymph nodes (ypT0/is ypN0) after neoadjuvant therapy.

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).

Events including local relapse, distant metastasis, contralateral breast cancer, second primary cancer or death from any cause

The rate of patients who were performed breast-conserving surgery.

(like cardiotoxicity ,hematological toxicity，gastrointestinal symptoms) as a measure of safety

Study title	NCT ID	Conditions	Interventions	Eligibility	Organization	Link
Efficacy and Safety of Dose-dense Chemotherapy (ddEC-ddP) for Neoadjuvant Chemotherapy of HER2-negative Breast Cancer	NCT04576143	HER2-negative B... Neoadjuvant Che...	Epirubicin Cyclophosphamid Docetaxel Paclitaxel	18 Years - 70 Years	Second Affiliated Hospital, School of Medicine, Zhejiang University
Efficacy and Safety of Dose-dense Chemotherapy (ddEC-ddP) for Neoadjuvant Chemotherapy of HER2-negative Breast Cancer	NCT04576143	HER2-negative B... Neoadjuvant Che...	Epirubicin Cyclophosphamid Docetaxel Paclitaxel	18 Years - 70 Years	Second Affiliated Hospital, School of Medicine, Zhejiang University

Spots Global Cancer Trial Database for preoperative neoadjuvant chemotherapy