A Phase 1/2, Open Label, Single Infusion Study of Autologous T-Cells Genetically Modified at the CCR5 Gene by Zinc Finger Nucleases (SB-728-T) in HIV Infected Subjects
试验速览
- 阶段
- 1 期
- 状态
- 已完成
- 入组人数
- 21
- 试验地点
- 8
- 主要终点
- Evaluate the safety and tolerability of SB-728-T cells infusion in HIV-1 positive subjects
研究概览
简要总结
This research study is being carried out to study a new way to possibly treat human immunodeficiency virus (HIV). The agent is called SB-728-T which are CD4+ T-cells obtained from an individual that are genetically modified at the CCR5 gene by Zinc Finger Nucleases. The CCR5 gene is required for certain types of HIV to enter into and infect T-cells. T cells are one of the white blood cells used by the body to fight HIV. The most important of these are called "CD4+ T-cells"
Some people are born without the CCR5 gene on their T-Cells. These people remain healthy and are resistant to infection with HIV. Other people have a low number of CCR5 genes on their T-cells and their HIV disease is less severe and is slower to cause disease (AIDS).
The purpose of this research study is to find out whether SB-728-T is safe to give to humans and find out how this affects HIV.
详细描述
Laboratory studies have shown that when CD4+ T-cells are modified with Zinc Finger Nucleases SB-728, HIV is prevented from killing the CD4+ T-cells. On the basis of these laboratory results, there is the potential that this may work in humans infected with HIV and improve their immune system by allowing their CD4+ T-cells to survive longer.
The new treatment to be studied will involve removing white blood cells from the blood that contain CD4+ T-cells. The extracted CD4+ T-cells are then genetically modified by the Zinc finger Nucleases to be resistant to infection by removing the CCR5 gene from the surface of the CD4+ T-cell where HIV enters the cell. Additional genetically modified cells are manufactured and then re-infused back into the individual. Researchers hope that these genetically modified cells will be resistant to infection by HIV and will be able to reproduce additional resistant CD4+ T-cells in your body.
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
- All
- 接受健康志愿者
- 否
入选标准
- •Documented HIV infection
- •CD4+ T-cell count >500 cell per millimeter cubed (cells/mm3)
- •CD4+ T-cell nadir of >400 cells/mm3
- •HIV viral load >1,000 copies per milliliter (mL)
排除标准
- •Any viral hepatitis
- •Acute HIV infection
- •HIV viral load >1,000,000 copies/mL
- •Active or recent (prior 6 months) AIDS defining complication
- •Any HIV medications within the past 12 weeks
- •Cancer or malignancy that has not been in remission for at least 5 years with the exception of successfully treated basal cell carcinoma of the skin
- •Current diagnosis of NYHA grade 3 or 4 congestive heart failure or uncontrolled angina or arrhythmias
- •History of bleeding problems
- •Use of chronic steroids in past 30 days
- •Pregnant or breast feeding
- •Active drug or alcohol abuse
- •Serious illness in past 30 days
- •Currently participating in another clinical trail or any prior gene therapy
研究组 & 干预措施
SB-728-T
Subjects will receive one intravenous infusion of SB-728-T
干预措施: SB-728-T (Biological)
结局指标
主要结局
Evaluate the safety and tolerability of SB-728-T cells infusion in HIV-1 positive subjects
时间窗: 12 months
Evaluate the safety and tolerability of a single infusion of 5-30 billion SB-728-T cells in HIV-1 positive subjects
次要结局
- Evaluate persistence of HIV as measured by HIV-1 RNA,(12 months)
- Change in CD4+ T-cell count(12 months)
- Persistence of SB-728-T in the peripheral blood(12 months)