Safety and Immunogenicity of an HIV Vaccine in Normal Adult Volunteers

Completed · Phase 1

Conditions studied: Healthy, HIV Infections

In brief

This study will test the safety of an experimental vaccine against HIV infection and see if it causes an immune response to HIV. The vaccine is given by injection (shot) in the upper arm. It is made from DNA that codes for three HIV proteins. The DNA is inserted into an adenovirus that carries it into the muscle cells. The adenovirus normally can cause eye or upper respiratory infections, such as a cold; however, for the vaccine, it has been modified so that it cannot cause illness. Nor can the vaccine cause HIV infection, because it codes for only three of the nine HIV proteins. Healthy, normal volunteers between 18 and 44 years of age who are not HIV-infected may be eligible for this study. Candidates are screened with a medical history and physical examination and blood and urine tests. Participants are randomly assigned to receive either the experimental vaccine or a placebo (an inactive substance that looks like the vaccine). The vaccine or placebo is administered to participants in groups, according to their entry into the study. The first group receives the lowest study dose of vaccine. If this dose is safe, then the second group receives a higher dose. If this dose is also safe, then the third and final group receives the highest study dose. Clinic staff observe the subjects for side effects for 30 minutes after the injection, and subjects keep a diary card for the next 5 days, recording their temperature and any symptoms that may appear. Subjects are contacted by a nurse 2 days after the injection for follow-up. Participants are seen at the clinic for follow-up visits 1, 2, 4, 12, and 24 weeks after the injection, and then are contacted by telephone for follow-up once a year until 5 years after the injection. The clinic visits include a physical examination, medical history, blood and urine tests, and HIV counseling, as needed. Women have pregnancy tests at the screening evaluation and again at study week 24. All subjects are tested for HIV at screening and at study weeks 12 and 24, and all subjects complete a "social impact questionnaire" at week 24. All subjects are asked questions about their sexual behavior and drug use. ...

Key facts

Study ID

NCT00083330

Run by

National Institute of Allergy and Infectious Diseases (NIAID)

People needed

36

Starts

2004-05-18

Expected to finish

2009-10-01

Last updated by the study team

2017-07-02

Who can join

Age: 18 and older, up to 44. Sex: any. Healthy volunteers: not accepted.

You may not qualify if…

• A volunteer will be excluded if one or more of the following conditions apply.
• Women:
• Breast-feeding.
• Volunteer has received any of the following substances:
• HIV vaccines in a prior clinical trial
• Immunosuppressive or cytotoxic medications within the past six months with the exception of corticosteroid nasal spray for allergic rhinitis or topical corticosteroids for an acute uncomplicated dermatitis
• Blood products within 120 days prior to HIV screening
• Immunoglobulin within 60 days prior to HIV screening
• Live attenuated vaccines within 30 days prior to initial study vaccine administration
• Investigational research agents within 30 days prior to initial study vaccine administration
• Medically indicated subunit or killed vaccines, e.g. influenza, pneumococcal, or allergy treatment with antigen injections, within 14 days of study vaccine administration
• Current anti-TB prophylaxis or therapy
• Volunteer has a history of any of the following clinically significant conditions:
• Serious adverse reactions to vaccines such as anaphylaxis, hives, respiratory difficulty, angioedema, or abdominal pain
• Autoimmune disease or immunodeficiency
• Asthma that is unstable or required emergent care, urgent care, hospitalization or intubation during the past two years or that requires the use of oral or intravenous corticosteroids.
• Diabetes mellitus (type I or II), with the exception of gestational diabetes.
• History of thyroidectomy or thyroid disease that required medication within the past 12 months.
• Serious angioedema episodes within the previous 3 years or requiring medication in the previous two years.
• Blood pressure that is more than 145/95 at enrollment or hypertension that requires medication.
• Bleeding disorder diagnosed by a doctor (e.g. factor deficiency, coagulopathy, or platelet disorder requiring special precautions) or significant bruising or bleeding difficulties with IM injections or blood draws.
• Syphilis infection that is active or a positive serology due to a syphilis infection treated less than six months ago.
• Malignancy that is active or treated malignancy for which there is not reasonable assurance of sustained cure or malignancy that is likely to recur during the period of the study.
• Seizure disorder other than: 1) febrile seizures under the age of two, 2) seizures secondary to alcohol withdrawal more than 3 years ago, or 3) a singular seizure not requiring treatment within the last 3 years.
• Asplenia or any condition resulting in the absence or removal of the spleen.

Where it is running

• National Institutes of Health Clinical Center, 9000 Rockville Pike — Bethesda, Maryland, United States

Full record on ClinicalTrials.gov

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