An Efficacy and Safety Study of Autologous Cluster of Differentiation 34 (CD34+) Hematopoietic Progenitor Cells Transduced With Placebo or an Anti- Human Immunodeficiency Virus Type 1 (HIV-1) Ribozyme (OZ1) in Participants With HIV-1 Infection

Study Overview
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Brief Summary
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The purpose of this study is to determine the safety and efficacy of administration of a cell-delivered ribozyme gene transfer product to participants with chronic (lasting a long time) Human Immunodeficiency Virus Type 1 (HIV-1) infection (a life-threatening infection which you can get from an infected person's blood or from having sex with an infected person).

Detailed Description
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This is a randomized (study drug assigned by chance), double-blind (neither the participant nor the physician know the study medication drug name), placebo (an inactive substance that is compared with a drug to test if the drug has a real effect in a clinical trial) controlled study to investigate safety and efficacy of administration of autologous cluster of differentiation 34 (CD34+) cells transduced with placebo or an anti-HIV-ribozyme (OZ1) in participants with HIV-1 infection. The total study duration will be 100 weeks and will include following visits: screening, pre-infusion Days 1-7, Day 8, Week 1, 4, 8, 12, 16, 20, 24, 25, 26, 27, 28, 30, 32, 34, 36, 38, 40, 41, 42, 43, 44, 45, 46, 47, 48, 52, 56, 60, 64, 68, 72, 76, 80, 84, 88, 92, 96 and 100. Before the administration of CD34+ final cell product, a number of procedures will be performed, including the injection of granulocyte colony-stimulating factor (G-CSF) to mobilize the CD34+ cells, apheresis and the transduction of the CD34+ cells with either OZ1 or placebo. Participants will be divided into two groups: one group will receive OZ1-containing CD34+ cells, the other group will receive CD34+ cells alone and will receive a single intravenous infusion (a fluid or a medicine delivered into a vein by way of a needle) of CD34+ cells transduced with either placebo or OZ1 gene transfer product. The final cell product contains approximately 2-20 x 10^7 cells/kilogram autologous CD34+ cell suspension transduced with either placebo or OZ1 gene transfer product. Primary efficacy will be assessed primarily by the amount of HIV ribonucleic acid (RNA) (viral load). Participants' safety will be monitored throughout the study.

Official Title
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A Randomized Phase II, Double-Blind, Controlled Trial to Evaluate the Safety and Efficacy of Autologous CD34+ Hematopoietic Progenitor Cells Transduced With Placebo or an Anti-HIV-1 Ribozyme (OZ1) in Patients With HIV-1 Infection

Conditions
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HIV-1

Intervention / Treatment
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* Other: Placebo
* Genetic: OZ1
* Genetic: CD34+ cells


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: An Human Immunodeficiency Virus 1 (HIV-1) infection for at least 6 months documented by positive HIV serology including confirmation by Western Blot Receiving either the first or second regimen of antiretroviral therapy (ART) defined as 3 or more antiretroviral drugs in combination A Viral load less than 400 copies per milliliter (copies/ml), as measured by Roche Amplicor HIV-1 Monitor assay, on 2 consecutive occasions, at least 7 days apart and within 45 days prior to granulocyte colony-stimulating factor (G-CSF) administration and the second measurement has to be within 14 days prior to G-CSF Cluster of Differentiation 4 (CD4+) cell count must be greater that 300 cells per cubic millimeter (cells/mm^3) Women and men (or their partners) had to agree to use a medically accepted form of contraception and safe sexual practices Exclusion Criteria: Any previous or current Acquired Immunodeficiency Syndrome (AIDS) defining illness by the Center for Disease Control (CDC) case definition, including AIDS-related dementia (mental decline), with the exception of Kaposi's sarcoma (purple or brown cancerous pimples on the skin, often associated with AIDS) Clinically significant clinical laboratory results Participants with veins unsuitable for study related procedures Current ART that included antiretroviral agents which exhibited antagonism when used together (example, zidovudine and stavudine ), or current or previous ART that included hydroxyurea Current pregnancy or breastfeeding

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 45 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: 001<br>OZ1 Single intravenous infusion of 2-20 x 10 to the power of 7 OZ1 transduced autologous CD34+ cells per kilogram of body weight | Genetic: OZ1<br>* Single intravenous infusion of OZ1.<br>Genetic: CD34+ cells<br>* Autologous CD34+ cells.<br>|
| Placebo Comparator: 002<br>Placebo Single intravenous infusion of placebo transduced autologous CD34+ cells per kilogram of body weight | Other: Placebo<br>* Single intravenous infusion of placebo.<br>Genetic: CD34+ cells<br>* Autologous CD34+ cells.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Difference in viral load between the placebo and OZ1 groups. |  | Week 47 | 
| Difference in viral load between the placebo and OZ1 groups. |  | Week 48 | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| CD4+ cell count |  | Weeks 41 - 48 | 
| HIV proviral DNA |  | Weeks 41 - 48 | 
| Thymic function |  | Weeks 41 - 48 | 
| Time to resumption of antiretroviral therapy |  | Weeks 41 - 48 | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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HIV-1 Infections, Gene Therapy, Anti-HIV-1 Ribozyme, OZ1