Clinical Trials Logo
NCT number NCT00183261
Study type Interventional
Source National Institute of Allergy and Infectious Diseases (NIAID)
Status Completed
Phase Phase 2
Start date March 2006
Completion date October 2010

Clinical Trial Summary

The purpose of this study is to determine whether the HIV vaccine MRKAd5 HIV-1 gag/pol/nef followed by treatment interruption can increase immune system function in adults with acute or recent HIV infection who have started taking anti-HIV drugs.

Clinical Trial Description

While the advent of highly active antiretroviral therapy (HAART) has contributed to the increasing control of HIV infection and viral replication, ultimate control of HIV infection will require the development of effective HIV-specific immunity in HIV infected individuals. Therapeutic vaccination within the earliest weeks following acute or recent HIV infection may increase the immune system's response to HIV. This study will determine whether MRKAd5 HIV-1 gag/pol/nef vaccine followed by treatment interruption can maintain viral suppression in patients with acute or recent HIV infection.

The interventional part of the study will last 102 weeks. Participants will be randomly assigned to receive either MRKAd5 HIV-1 gag/pol/nef or placebo vaccine at baseline and Weeks 4 and 26. Participants must remain on HAART from study entry until Week 38. Participants whose HIV viral load rebounds two times or more above 500 copies/ml by Weeks 39 to 41 will not enter Step 2 of the study. Participants whose viral load drops to 500 copies/ml or less by Weeks 39 to 41 will enter Step 2, where they will discontinue HAART for 24 weeks. Participants in Step 2 will have plasma HIV viral loads measured every 2 weeks for the first 4 weeks and weekly for the next 3 weeks. Study participants will continue in Step 2 until they experience virologic and immunologic failure or they need to restart HAART for another reason; they will then enter Step 3, where they will reinitiate HAART. Step 3 participants will continue on HAART until Week 102. A long-term safety follow-up period will occur from Weeks 103 to 240.

Timing of the study visits will be determined by which steps a participant enters. A physical exam and blood and urine collection will occur at most study visits throughout the study until Week 102. Follow-up phone calls to study participants will occur every 6 months from Week 102 until Week 240 to collect long-term safety data, including clinical status, CD4 count, and medication history. During the long-term safety follow-up, participants will also have study visits every 6 months. Visits will include medical and medication history.

Study Design

Allocation: Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Caregiver), Primary Purpose: Treatment

Related Conditions & MeSH terms

See also
  Status Clinical Trial Phase
Recruiting NCT03256435 - PrEP Intervention for African American MSM in Mississippi N/A
Completed NCT00517803 - Micronutrient Supplemented Probiotic Yogurt for HIV/AIDS and Other Immunodeficiencies N/A
Enrolling by invitation NCT03275571 - HIV, Computerized Depression Therapy & Cognition N/A
Completed NCT02116660 - Evaluation of Renal Function, Efficacy, and Safety When Switching From Tenofovir/Emtricitabine Plus a Protease Inhibitor/Ritonavir, to a Combination of Raltegravir (MK-0518) Plus Nevirapine Plus Lamivudine in HIV-1 Participants With Suppressed Viremia and Impaired Renal Function (MK-0518-284) Phase 2
Recruiting NCT03271307 - Use of HIV Self-Test Kits to Increase Identification of HIV-Infected Individuals and Their Partners N/A
Active, not recruiting NCT01937455 - A Phase 1, Randomized, Blinded, Dose-escalation Study of rAAV1-PG9DP Recombinant AAV Vector Coding for PG9 Antibody in Healthy Male Adults. Phase 1
Active, not recruiting NCT01852942 - Reversing Tissue Fibrosis to Improve Immune Reconstitution in HIV Phase 2
Withdrawn NCT01975012 - Safety, Tolerability, Drug Interactions, and Antiviral Activity of Rilpivirine in Antiretroviral-Naive HIV-Infected Children Less Than 12 Years of Age Phase 1/Phase 2
Active, not recruiting NCT01931358 - Study of Boosting Strategies After Vaccination With ALVAC-HIV and AIDSVAX® B/E Phase 2
Completed NCT01968551 - Phase 3 Open-Label Study to Evaluate Switching From Optimized Stable Antiretroviral Regimens Containing Darunavir to Elvitegravir/Cobicistat/Emtricitabine/Tenofovir Alafenamide (E/C/F/TAF) Single Tablet Regimen (STR) Plus Darunavir (DRV) in Treatment Experienced HIV-1 Positive Adults Phase 3
Completed NCT01923610 - Safety and Immunological Response of a Boosting Dose of MVA-B in Healthy Volunteers After 4 Years of Receiving MVA-B Phase 1
Recruiting NCT01439503 - Safer Sex Program for Young African-American Men Phase 2
Terminated NCT01583439 - The Mochudi Prevention Project ART Protocol N/A
Completed NCT01440569 - Safety and Efficacy of Cobicistat-boosted Darunavir in HIV Infected Adults Phase 3
Completed NCT01053598 - Evaluation Of The Performance Of The Nitrate Reductase And Resazurin Titre Assay For The Detection of Mycobacterium Tuberculosis Complex From Sputum In A High Tb and Hiv Setting N/A
Recruiting NCT01204905 - R5 Integrase Study in HIV-1 Naive Patients N/A
Recruiting NCT01428596 - Safety and Immunogenicity of HIVAX in HIV-1 Infected Subjects Phase 1
Recruiting NCT01176409 - Can Valacyclovir Attenuate Inflammation in Antiretroviral-Treated HIV-Infected Individuals With Herpes Simplex Virus Type 2? Phase 3
Completed NCT01144026 - Clinical Study of TUTI-16 in HIV-1 Infected and Uninfected Subjects Phase 1/Phase 2
Completed NCT01303575 - Internet-Based Sexual Health Education for Middle School Native American Youth N/A