A Pilot Study of Neoadjuvant Biweekly Doxorubicin and Cyclophosphamide (AC) With GMCSF Followed by Weekly Carboplatin/Paclitaxel With Plus or Minus Trastuzumab (TC ± H) in the Treatment of Breast Cancer

Rita Sanghvi, Mehta1 个研究点分布在 1 个国家目标入组 48 人开始时间: 2004年4月最近更新: 2018年3月2日

适应症

干预措施

试验速览

阶段: 2 期
状态: 已完成
发起方
入组人数: 48
试验地点: 1
主要终点: Clinical Response Rate

研究概览研究设计入排标准研究组 & 干预措施结局指标研究者研究点记录与标识符相似试验

研究概览

简要总结

We proposed to use 4 cycles of AC q 2 weeks, as used in the dose dense adjuvant study with GM-CSF support on days 3-9 of the cycle. After the completion of AC we plan to administer paclitaxel and carboplatin weekly for a total of 12 doses with one week rest after every 3 weeks of treatment over 12 weeks. Patients who are her-2 over-expressors by FISH (fluorescence in situ hybridization) will also receive Trastuzumab with weekly carboplatin and paclitaxel as the combination TC±H has been found to be synergistic in advanced breast cancer with improved clinical outcome.

详细描述

Neoadjuvant chemotherapy, also termed primary, induction, or preoperative chemotherapy, is defined as chemotherapy administered before locoregional treatment. It was first used in locally advanced breast cancer 30 years ago. Classically, these tumors were treated with radical surgery and/or radiotherapy. However, despite this aggressive local therapy, most patients relapsed with distant metastases and eventually died (1,2). The aim of neoadjuvant therapy is to reduce the tumor volume in patients before surgical resection, thus increasing the likelihood of breast conservation. More recently, neoadjuvant therapy has been studied as a way of testing the relevance of biological markers in predicting disease outcome.

At least six randomized trials have compared survival in patients managed with either the neoadjuvant or adjuvant approaches(3,4,5,6,7,8,9). Two of the smaller trials suggested a survival advantage for patients treated with neoadjuvant chemotherapy (5,6). Other studies, including the largest trial (1523 patients) run by the NSABP, found no differences in disease-free and overall survival (4,6,9).

Induction of a pCR should be one of the primary goals of neoadjuvant therapy because patients with no evidence of tumor cells in breast and lymph nodes after treatment may have a longer disease-free and overall survival (10).

Biweekly and weekly regimens may enhance dose intensity by minimizing re-growth of cells between cycles of treatment. In fact, dose dense regimens have even shown a survival benefit in an adjuvant setting in lymph node positive breast cancer, made possible with use of G-CSF (11). There is as yet no standard best neoadjuvant treatment. Generally patients receive AC (NSABP 14) on 3-weekly regimens in neoadjuvant setting. In addition, incorporation of taxanes on a 3 weekly schedule has resulted in statistically higher pathological CR (12,13). More recently, weekly paclitaxel regimens have reported increased pathological responses compared to 3 weekly taxane regimens. Carboplatin has also emerged as an effective agent in the treatment of metastatic breast cancer (14). Moreover, the combination of carboplatin and paclitaxel has been found to be synergistic both in three-weekly regimens and weekly regimens. In fact, combination of carboplatin, paclitaxel and trastuzumab has demonstrated a survival advantage over paclitaxel and trastuzumab alone. The Phase III study, the preliminary results of which were presented at the San Antonio Breast Cancer Symposium, show that the addition of carboplatin to trastuzumab and paclitaxel resulted in a six-month improvement in the time it took for the disease to progress, compared to the standard trastuzumab and paclitaxel regimen. The study found median survival in the trastuzumab and paclitaxel arm was 33.5 months, while the group receiving the tripartite therapy had yet to reach that point after 36 months of follow-up. Furthermore, the weekly regimens of these drugs have been found to have significantly improved tolerability over three weekly regimens (15). Therefore, we propose to use 4 cycles of AC q 2 weeks, as used in the dose dense adjuvant study with GM-CSF support on days 5-14 of the cycle. After the completion of AC we plan to administer taxol and carboplatin weekly for a total of 9 doses with one week rest after every 3 weeks of treatment over 12 weeks.

Patients who are her-2 overexpressors by FISH will also receive Trastuzumab with weekly carboplatin and paclitaxel as the combination has been found to be synergistic in advanced breast cancer with improved clinical outcome.

研究设计

研究类型: Interventional
分配方式: Na
干预模型: Single Group
主要目的: Treatment
盲法: None

入排标准

年龄范围: 18 Years 至 —（Adult, Older Adult）
性别: Female
接受健康志愿者: 否

入选标准

未提供

排除标准

未提供