The Effect of Monoclonal Vascular Endothelial Growth Factor (VEGF) Antibody (Bevacizumab) on Pituitary Function
The purpose of this research is to determine whether the drug, Bevacizumab (a monoclonal anti VEGF-A antibody), which is approved to treat patients with metastatic colon cancer induces hyperprolactinemia (increased prolactin secretion) in humans with intact pituitary function. Past studies have shown Bevacizumab to shrink tumor size and also increase prolactin levels. The mechanism of the hyperprolactinemia might be inhibition of pituitary portal vein transport, suggesting that Bevacizumab induces prolactin secretion from normal lactotrophs in the pituitary gland.
Patients who have been treated with Bevacizumab for at least one month will be recruited to participate.
The subjects who are being treated with Bevacizumab by Dr. Stephen Wolin (a sub-investigator) will be screened by him for study eligibility. Dr. Wolin will approach eligible patients with all the information and background of the study and see if they have an interest in being consented.
If consented, there will be 2 blood draws for the research that is not part of their standard care in which 10 ml of blood is collected and prolactin, growth hormone, IGF-I, TSH, thyroxine, ACTH, and cortisol will be measured. One 5ml blood draw will occur before the administration of Bevacizumab and the second 5 ml blood draw will occur after the administration of the Bevacizumab. The investigators will then review the laboratory results. The blood tests are of the hormones of the pituitary gland to test pituitary function and see if there are any abnormalities with the secretions of the gland. Pituitary function abnormalities and hyperprolactinemia are diagnosed by looking at hormone levels in the blood and comparing them to the normal reference ranges.
This study will only involve 10 subjects and will be conducted entirely at Cedars-Sinai Medical Center.
研究概览
研究类型
注册 (实际的)
联系人和位置
学习地点
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California
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Los Angeles、California、美国、90048
- Cedars-Sinai Medical Center
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参与标准
资格标准
适合学习的年龄
接受健康志愿者
有资格学习的性别
取样方法
研究人群
描述
Inclusion Criteria:
- Patients with colorectal cancer, lung cancer, breast cancer, and glioblastoma patients that have been treated with Bevacizumab for at least 1 month
- Adults (18 years of age or older)
Exclusion Criteria:
- Patients who are taking medications known to affect serum prolactin levels
- Patients who are pregnant
- Patients who have pituitary disease
- Minors (Under the age of 18)
学习计划
研究是如何设计的?
设计细节
队列和干预
团体/队列 |
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Taking Bevacizumab
Patients who are currently being treated for cancer by the drug Bevacizumab.
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研究衡量的是什么?
主要结果指标
结果测量 |
措施说明 |
大体时间 |
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To determine whether the drug, Bevacizumab (a monoclonal anti VEGF-A antibody), which is approved to treat patients with metastatic colon cancer induces hyperprolactinemia (increased prolactin secretion) in humans with intact pituitary function.
大体时间:6 weeks
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Patients will have their blood drawn before their first Bevacizumab infusion and then again 6 weeks later.
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6 weeks
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合作者和调查者
调查人员
- 首席研究员:Shlomo Melmed, MD、Cedars-Sinai Medical Center
出版物和有用的链接
研究记录日期
研究主要日期
学习开始
初级完成 (实际的)
研究完成 (实际的)
研究注册日期
首次提交
首先提交符合 QC 标准的
首次发布 (估计)
研究记录更新
最后更新发布 (估计)
上次提交的符合 QC 标准的更新
最后验证
更多信息
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