Perioperative Administration of Oral Green Tea Extract/Milk Thistle Extract to Colorectal Cancer Patients Undergoing Colorectal Cancer Resection, a Phase 1 Study
试验速览
- 阶段
- 1 期
- 状态
- 终止
- 入组人数
- 23
- 试验地点
- 1
- 主要终点
- Number of patients with adverse events or complications
研究概览
简要总结
Colorectal cancer is the third most common form of cancer found in the United States. To date surgical resection provides the best chance for cure. Unfortunately, despite "curative" surgery, tumor recurrences develop in 30-40% of patients from either unforeseen residual metastases or from viable tumor cells shed into the circulation before or at the time of surgery. There is evidence from both humans and mice suggesting that tumor growth is stimulated after surgery for a period of time.
This study calls for the administration of a green tea extract and a milk thistle extract, two orally ingested supplements, during the week immediately before and weeks after your surgery. It is not the current standard of care to give anti-cancer drugs during the perioperative period. The basic idea behind this study is that it should be beneficial to inhibit cancer growth in the days leading up to and following surgery. Why is this the case?
It makes sense to limit or inhibit tumor growth before surgery with drugs provided it can be done safely and does not interfere with the surgery. It is also logical to give anti-cancer drugs after surgery because, unfortunately, about 35 percent of colorectal cancer patients, after resection, have hidden tumor cells that remain in the body. There is also strong human evidence that tumor growth is stimulated during the first month after tumor resection as a result of the surgical injuries and the healing process. Therefore, there is good reason to give anti-cancer drugs as soon as possible after surgery in order to offset some of surgery's negative effects.
Although both supplements have been given safely to a wide variety of patients with a number of different medical problems, the two supplements together have never been given to cancer patients during the weeks just before and following surgery. The researchers hypothesize that the administration of these two supplements together will be safe in the period surrounding colorectal cancer surgery.
详细描述
Green tea extract and Silibinin (from the milk thistle plant) have both been shown in experimental studies to have anti-cancer effects as well as limited toxicity. Epigallocatechin-3-gallate (EGCG) is the major active catechin in green tea; it has been shown to prevent and limit tumor growth in murine models1-3. Silymarin, which is extracted from the seeds of the milk thistle plant, is used clinically as a hepatoprotective agent in Europe4. Its major active component, Silibinin, is well-tolerated and largely free of adverse effects5-6. In recent studies, Silibinin has been shown to inhibit the growth of a number of cancers in mouse models, including lung7, bladder8, liver9, prostate10, and colon11-12. Silibinin and EGCG have similar anti-neoplastic mechanisms including: 1) cell cycle arrest via upregulation of P21 and P27 and downregulation of CDK, 2) induction of apoptosis via Caspase-3 activation and cleavage of poly (ADP-ribose) polymerase (PARP), and 3) suppression of angiogenesis and metastasis via inhibition of vascular endothelial growth factor (VEGF) and matrix metalloproteinase (MMP-9)
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 85 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Patients must be age 18 to 85 years
- •Patient must have biopsy proven colon or rectal cancer
- •Cancer should be judged to be stage 1 to 3 based on preoperative staging
- •Patients may be any race and any gender
排除标准
- •Patients with cancer judged to be stage 4 are not eligible
- •Patients undergoing emergency surgery for cancer are not eligible
- •Patients who are immunosuppressed or taking immunosuppressive medications (steroids or chemotherapeutic agents) are not eligible
- •Patients with Crohn's disease or ulcerative colitis are not eligible
- •Patients with other malignancies are not eligible
- •Patients who are taking part in other neoadjuvant and early adjuvant chemotherapy trials are not eligible
研究组 & 干预措施
Green Tea and Milk Thistle Supplements
Patients will receive green tea extract and milk thistle extract supplements for one week prior to surgery and for 30 days after surgery.
干预措施: Green Tea and Milk Thistle Supplements (Drug)
结局指标
主要结局
Number of patients with adverse events or complications
时间窗: 60 days
次要结局
未报告次要终点
研究者
Richard Whelan
Professor
Feinstein Institute for Medical Research