A Trial to Evaluate Ad35-GRIN/ENV HIV Vaccine in Healthy Adult Volunteers

Study Overview
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Brief Summary
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The purpose of this study is to evaluate the safety and immunogenicity of Ad35-GRIN/ENV HIV vaccine and Ad35-GRIN HIV vaccine administered intramuscularly at 0 and 6 months.

Detailed Description
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This study is a phase I dose-escalation randomized, placebo-controlled study designed to evaluate the safety and immunogenicity of Ad35-GRIN and Ad35-ENV filled in the same vial and administered as a single, combined vaccine. This is the first administration of this vaccine in humans. The study will be double blind with respect to vaccine or placebo. The vaccine will be administered intramuscularly at months 0 and 6 at three dose levels: 2 x 10^9, 2 x 10^10, and 2 x 10^11 vp per dose. Volunteers will be randomized to vaccine: placebo in a 10:4 ratio in each group. A fourth group was added as a protocol amendment to study Ad35-GRIN HIV vaccine alone at 1x10^10 vp in 14 volunteers (10:4 vaccine:placebo). Volunteers will be screened up to 42 days before vaccination (90 days for Ad35 neutralizing antibody screening) and will be followed for 12 months after the last vaccination (18 months total study participation). Estimated enrollment will take approximately 5 months. Thus, the total duration of the study would be approximately 23 months.

Official Title
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A Phase I Placebo-controlled, Double-blinded (in Terms of Vaccine or Placebo), Randomized Dose-escalation Trial to Evaluate the Safety and Immunogenicity of Ad35-GRIN/ENV HIV Vaccine in Healthy Adult Volunteers. (IAVI B001)

Conditions
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HIV, HIV Infections

Intervention / Treatment
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* Biological: Ad35-GRIN/ENV
* Biological: Ad35-GRIN


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria Healthy males and females, as assessed by a medical history, physical exam, and laboratory tests Willing to comply with the protocol and follow up for the planned duration of the study (screening plus 18 months) In the opinion of the PI or designee, has understood the information provided. Written informed consent needs to be given before any study-related procedures are performed Amenable to HIV risk reduction counseling, committed to maintaining behavior consistent with low risk of HIV exposure through the last required visit, and willing to continue 5 yrs of annual follow-up contact Demonstrates understanding (assessment of understanding will be performed) of the risk for harm observed in the STEP Study results Assessed by the clinic staff as being at low risk for HIV infection on the basis of sexual behaviors within the 12 months prior to enrolment defined as follows: Sexually abstinent OR Had two or fewer mutually monogamous relationships with partners believed to be HIV-uninfected and who did not use illicit drugs ( methamphetamines (crystal meth), heroin, cocaine, including crack cocaine or chronic marijuana abuse) OR Had two or fewer partners believed to be HIV-uninfected and who did not use illicit drugs (methamphetamines (crystal meth), heroin, cocaine, including crack cocaine or chronic marijuana abuse), and with whom he/she regularly used condoms for vaginal and anal intercourse Willing to undergo HIV Testing, HIV counseling and receive HIV Test results If sexually active female, using an effective method of contraception (hormonal contraceptive; diaphragm; Intra Uterine Device (IUD); condoms; anatomical sterility in self or partner) from screening until at least 4 months after last vaccination. All female volunteers must be willing to undergo urine pregnancy tests at time points as indicated in the Schedule of Procedures If sexually active male, willing to use an effective method of contraception (such as condoms, anatomical sterility) from screening until 4 months after the last vaccination Exclusion Criteria Confirmed HIV-1 or HIV-2 infection Detection of Ad35-specific serum neutralizing antibody Reported high-risk behavior for HIV infection defined as: Within 12 months before vaccination, the volunteer has: Had unprotected vaginal or anal sex with a known HIV infected person or a casual partner (i.e. no continuing established relationship) Engaged in sex work for money or drugs. Excessive daily alcohol use or frequent binge drinking or chronic marijuana use or use of other illicit drugs. Recently acquired a sexually transmitted disease (STD) including syphilis, gonorrhoea, non-gonococcal urethritis, Trichomonas vaginalis, symptomatic Herpes genitalis (HSV-2), chlamydia, pelvic inflammatory disease (PID), mucopurulent cervicitis, epididymitis, proctitis, lymphogranuloma venereum, chancroid, or hepatitis B). Has a high-risk partner either currently or had such a partner within the previous 12 months. Any clinically significant abnormality on history or examination, including history of immunodeficiency or autoimmune disease; use of systemic corticosteroids (the use of topical steroids and inhaled steroids for sinus decongestion are permitted), immunosuppressive, antiviral, anticancer, anti-tuberculosis, or other medications considered significant by the investigator within the previous 6 months; Any clinically significant acute or chronic medical condition that is considered progressive or, in the opinion of the investigator, would make the volunteer unsuitable for the study. Any of the following abnormal laboratory parameters Hemoglobin <11.0 g/dL for women and <12.5 g/dL for men Absolute Neutrophil Count (ANL): ≤ 999/mm3 Absolute Lymphocyte Count (ALC): ≤ 500/mm3 Platelets: ≤ 90,000 ≥ 550,000/mm3 Creatinine: >1.1 ULN AST: >1.25 x ULN ALT: >1.25 x ULN Urinalysis 2+ by urine dipstick Blood (not due to menses); Protein Leucocytes Confirmed diagnosis of hepatitis B (surface antigen HbsAg), hepatitis C (HCV antibodies), or active syphilis If female, pregnant or planning a pregnancy within 4 months after last vaccination; or lactating Receipt of live attenuated vaccine within the previous 60 days (live attenuated flu vaccine within 14 days) or planned receipt within 60 days after vaccination with Investigational Product or receipt of other vaccine within the previous 14 days or planned receipt within 14 days after vaccination with Investigational Product Receipt of blood transfusion or blood products within the previous 6 months Participation in another clinical study of an investigational product currently, within the previous 3 months or expected participation during this study Receipt of another investigational HIV vaccine candidate at any time History of severe or very severe local or systemic reactogenicity to vaccines or history of severe allergic reactions Major psychiatric illness, including any history of schizophrenia or severe psychosis, bipolar disorder requiring therapy, suicidal attempt or ideation in the previous 3 yrs Unwilling to forgo donations of blood, sperm, eggs, bone marrow or organs during the study Asplenia: any condition resulting in the absence of a spleen

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 50 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Prevention
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Quadruple


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Group A<br>Ad35-GRIN/ENV: 2x10^9 vp | Biological: Ad35-GRIN/ENV<br>* This is a dose-escalation trial. Each group will receive the Ad35-GRIN/ENV vaccine at different dosage levels.<br>|
| Experimental: Group B<br>Ad35-GRIN/ENV: 2x10^10 vp | Biological: Ad35-GRIN/ENV<br>* This is a dose-escalation trial. Each group will receive the Ad35-GRIN/ENV vaccine at different dosage levels.<br>|
| Experimental: Group C<br>Ad35-GRIN/ENV: 2x10^11 vp | Biological: Ad35-GRIN/ENV<br>* This is a dose-escalation trial. Each group will receive the Ad35-GRIN/ENV vaccine at different dosage levels.<br>|
| Experimental: Group D<br>Ad35-GRIN at 1x10^10 vp | Biological: Ad35-GRIN<br>* This is a dose-escalation trial. Group D will receive the Ad35-GRIN vaccine.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Safety (local and systemic reactogenicity signs and symptoms, laboratory measures, and adverse events) |  | 18 months | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Immunogenicity: Proportion of volunteers with HIV-1 specific T-cell responses by ELISPOT assay. |  | 18 months | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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HIV, Human Immunodeficiency Virus, HIV Seronegativity, Preventive Vaccine