Pre-Surgical "Window of Opportunity" Trial of the Combination of Metformin and Atorvastatin in Newly Diagnosed Operable Breast Cancer
试验速览
- 阶段
- 早期 1 期
- 状态
- 已完成
- 入组人数
- 23
- 试验地点
- 1
- 主要终点
- Change in tissue levels of the proliferation marker Ki-67
研究概览
简要总结
The purpose of this study is to determine the effects of combining metformin and atorvastatin treatment in patients with newly diagnosed breast cancer during the interval between breast biopsy and surgery.
This study is designed to assess whether tumor proliferation, as measured by the natural log expression of Ki-67 staining of breast tumor cells, is reduced following approximately 2 weeks of treatment with the combination of metformin plus atorvastatin in patients with newly diagnosed breast cancer.
详细描述
Breast cancer cells require energy homeostasis shifts with enhanced anabolism to enable rapid growth and continued proliferation. The main energy regulatory system in eukaryotes and breast cancer cells is the AMP-activated kinase (AMPK) pathway. AMPK is triggered by changes in the AMP/Adenosine triphosphate (ATP) ratio thus impacting energy reserves and requirements. AMPK pathway closely interacts with the phosphoinositide 3-kinase (PI3K)/Akt signaling pathway, affecting the downstream function of the master regulator mammalian target of rapamycin (mTOR). Activation of AMPK has been shown in vitro to result in inhibition of proliferation of various cancer cell lines.
Utilizing a pre-surgical model, the investigator plans to conduct a pilot study of 40 women with newly diagnosed invasive breast cancer or ductal carcinoma in-situ (DCIS) who will receive oral metformin and atorvastatin daily in the interval between diagnostic breast biopsy and definitive breast surgery.
The goal is to determine if dual combination treatment with metformin plus atorvastatin significantly impacts tumor-based markers, such as proliferation, and blood-based biomarkers.
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
- 21 Years 至 —（Adult, Older Adult）
- 性别
- Female
- 接受健康志愿者
- 否
入选标准
- •Female subjects with histologically-confirmed operable invasive breast cancer or DCIS, who undergo core needle biopsy followed by surgical excision at least 2 weeks after enrollment
- •≥ 5 mm by imaging/pathology of core to ensure enough pre- and post-treatment tissue for analysis
- •Age ≥ 21 years. Breast cancer is uncommon in patients less than this age.
- •No prior chemotherapy, radiation therapy, or breast resection within 6 months of study entry
- •Eastern Cooperative Oncology Group (ECOG) Performance Status 0-1
- •Signed informed consent
排除标准
- •Currently on medication for diabetes or hypercholesterolemia
- •Treatment with other investigational drugs within 6 months of study entry
- •Strong Cytochrome P450 3A4 (abbreviated CYP3A4) (e.g., clarithromycin, HIV protease inhibitors, and itraconazole), given potential interactions with atorvastatin
- •Renal impairment with a creatinine > 1.4 mg/dl
- •Hepatic impairment: Aspartate transaminase (AST)/(SGOT), Alanine Transaminase(ALT)/(SGPT) ≥ 2.5 x upper limit of normal range (ULN), OR Total bilirubin ≥ 1.5 x ULN (subjects with Gilbert's syndrome can have bilirubin of up to 1.5 x ULN), OR Alkaline phosphatase > 2.5 x ULN
研究组 & 干预措施
Metformin-Atorvastatin combination
Patients will receive metformin and atorvastatin for approximately 2 weeks prior to breast surgery.
干预措施: Metformin (Drug)
Metformin-Atorvastatin combination
Patients will receive metformin and atorvastatin for approximately 2 weeks prior to breast surgery.
干预措施: Atorvastatin (Drug)
Metformin-Atorvastatin combination
Patients will receive metformin and atorvastatin for approximately 2 weeks prior to breast surgery.
干预措施: Breast surgery (Procedure)
结局指标
主要结局
Change in tissue levels of the proliferation marker Ki-67
时间窗: Baseline, 2 weeks after start of treatment
Tumor proliferation, as measured by the natural log expression of Ki-67 staining of breast tumor cells.
次要结局
未报告次要终点
研究者
Katherine D. Crew
Associate Professor of Medicine and Epidemiology
Columbia University