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Effectiveness of Giving an HIV Vaccine (Remune) to HIV-Positive Patients Receiving an Anti-HIV Drug Combination

28 października 2021 zaktualizowane przez: National Institute of Allergy and Infectious Diseases (NIAID)

A Phase III, Randomized, Double-Blind, Placebo-Controlled Evaluation of the Effect of Immunization With an HIV Immunogen on the Time to Virologic Relapse in Individuals Receiving Potent, Suppressive Antiretroviral Therapies

The purpose of this study is to look at the effects of the HIV vaccine Remune on viral load (level of HIV in the blood) and on the way the immune system responds to HIV. This study will also try to see if the effects of the vaccine are different in patients entering the study with a viral load below 50 copies/ml compared to those who have a viral load from 50 to 500 copies/ml. (This study is currently being redesigned and the purpose may be revised.) Treatment with anti-HIV drugs does not always keep HIV viral load undetectable (so low that it cannot be measured). This study originally added an HIV vaccine called Remune to treat patients. Remune was thought to reduce viral load and improve immune responses. However, new information suggests that Remune may not be as effective as was first believed. The study has been changed to follow people already in the study and to let people enroll only if they participate in the substudy. The substudy will look at the effect of another HIV vaccine, vCP1452, on the immune response and how it works in combination with Remune. Information about the safety of these vaccines in HIV-positive patients will be gathered.

Przegląd badań

Status

Zakończony

Warunki

Interwencja / Leczenie

Szczegółowy opis

Studies have shown that inactivated, gp120-depleted whole virus immunogen (Remune) boosts immune responses to HIV. One response, lymphocyte proliferative response (LPR) to p24, is correlated with a low viral load in some patients with long-term non-progression of disease. This study examines whether administering Remune vaccine may generate new immune responses or boost existing responses to keep the level of virus in the blood low for a longer period of time than antiretroviral therapy alone. [AS PER AMENDMENT 7/20/00: In a recent study using Remune, comparison of virologic failure and time to virologic failure between Remune and adjuvant placebo arms revealed no differences between the 2 arms of the study. Results of this study suggest that the hypothesis in A5057 (that recipients of Remune would have only 50 percent of the number of virologic relapses as occur in the control arm) is no longer plausible in its current design. This protocol is being redesigned.] A substudy adds the HIV canarypox vaccine (vCP1452) in patients in the parent study and evaluates whether canarypox vaccine can augment the immune responses of Remune.

Patients will add either Remune (Arm A), or the placebo Incomplete Freund's Adjuvant (Arm B), to their antiretroviral therapy. They will be stratified to 1 of the following 4 groups:

  1. Patients suppressed with 3 or more antiretroviral drugs for 15 months or longer, with an HIV-1 RNA below 50 copies/ml, and who may have substituted 1 antiretroviral medication during that time.
  2. Patients suppressed with 3 or more antiretroviral drugs, who have not taken antiretroviral medications for 15 months or longer, with an HIV-1 RNA below 50 copies/ml, and who may have substituted 1 antiretroviral medication during that time. [AS PER AMENDMENT 7/20/00: This stratum includes patients who have taken their current antiretroviral therapy for less than 15 months prior to screening viral load measurement. If these patients changed from prior antiretroviral regimen(s) during the 15 months prior to screening, they must have changed at least 2 antiretroviral drugs during this time.]
  3. Patients suppressed with 3 or more antiretroviral drugs and whose HIV-1 RNA is 50 copies/ml or higher.
  4. Patients suppressed with 2 antiretroviral drugs. Injections of either Remune or IFA are given at Day 1 and once every 12 weeks for 96 weeks. Patients remain at the clinic for observation for 30 minutes following the first and second injections. If a patient's HIV viral level rises above a certain level, the patient and his/her health care provider may decide to change antiretroviral drugs to try and lower it. Injections will be suspended until the lower level is achieved, then resumed on the regular 12-week schedule. If the decision is not to change therapy, or the viral load does not decrease to under 500 copies/ml within 3 to 4 months, injections may still be received as long as the HIV RNA level is below 5,000 copies/ml. Blood samples are collected prior to every injection to determine CD4/CD8 counts and viral load, to assay for viral presence in peripheral blood mononuclear cells, and to store for future studies. Pregnancy tests for women of reproductive potential, physical exams, and medical histories are done prior to every immunization.

An immunological substudy will randomize 80 of the eligible volunteers from the study cohort to additionally receive ALVAC vCP1452 or placebo (ALVAC) with equal probability. Arm A will receive ALVAC vCP1452; Arm B will be administered placebo.

[AS PER AMENDMENT 7/20/00: The study is closed to accrual except for patients who enroll into A5058s until the protocol can be redesigned. Patients enrolled under Version 1.0 continue to be followed every 12 weeks (plus or minus 14 days) until the end of the study. Patients should continue taking the same potent antiretroviral treatment that they were taking at study entry until reaching the primary endpoint of first virologic relapse.]

Typ studiów

Interwencyjne

Zapisy

472

Faza

  • Faza 3

Kontakty i lokalizacje

Ta sekcja zawiera dane kontaktowe osób prowadzących badanie oraz informacje o tym, gdzie badanie jest przeprowadzane.

Lokalizacje studiów

  • Stany Zjednoczone
    • California
      • Los Angeles, California, Stany Zjednoczone, 900331079
        • USC CRS
      • Palo Alto, California, Stany Zjednoczone, 943055107
        • Stanford CRS
      • San Francisco, California, Stany Zjednoczone, 941102859
        • Ucsf Aids Crs
    • Florida
      • Miami, Florida, Stany Zjednoczone, 331361013
        • Univ. of Miami AIDS CRS
    • Hawaii
      • Honolulu, Hawaii, Stany Zjednoczone, 96816
        • Univ. of Hawaii at Manoa, Leahi Hosp.
    • Maryland
      • Baltimore, Maryland, Stany Zjednoczone, 21287
        • Johns Hopkins Adult AIDS CRS
    • Massachusetts
      • Boston, Massachusetts, Stany Zjednoczone, 02114
        • Massachusetts General Hospital ACTG CRS
      • Boston, Massachusetts, Stany Zjednoczone, 02215
        • Beth Israel Deaconess Med. Ctr., ACTG CRS
      • Boston, Massachusetts, Stany Zjednoczone, 02215
        • Brigham and Women's Hosp. ACTG CRS
      • Boston, Massachusetts, Stany Zjednoczone
        • Bmc Actg Crs
    • New York
      • New York, New York, Stany Zjednoczone, 10003
        • Beth Israel Med. Ctr., ACTU
      • New York, New York, Stany Zjednoczone, 10016
        • NY Univ. HIV/AIDS CRS
      • Rochester, New York, Stany Zjednoczone, 14642
        • Univ. of Rochester ACTG CRS
    • North Carolina
      • Chapel Hill, North Carolina, Stany Zjednoczone, 275997215
        • Unc Aids Crs
    • Ohio
      • Cleveland, Ohio, Stany Zjednoczone, 44106
        • Case CRS
    • Pennsylvania
      • Philadelphia, Pennsylvania, Stany Zjednoczone, 19104
        • Hosp. of the Univ. of Pennsylvania CRS
    • Tennessee
      • Nashville, Tennessee, Stany Zjednoczone, 37203
        • Vanderbilt Therapeutics CRS

Kryteria uczestnictwa

Badacze szukają osób, które pasują do określonego opisu, zwanego kryteriami kwalifikacyjnymi. Niektóre przykłady tych kryteriów to ogólny stan zdrowia danej osoby lub wcześniejsze leczenie.

Kryteria kwalifikacji

Wiek uprawniający do nauki

14 lat i starsze (Dziecko, Dorosły, Starszy dorosły)

Akceptuje zdrowych ochotników

Nie

Płeć kwalifikująca się do nauki

Wszystko

Opis

Inclusion Criteria

Patients may be eligible for this study if they:

  • Are HIV-positive.
  • Have been on certain anti-HIV drugs for at least 3 months and intend to continue the same anti-HIV drugs unless they develop side effects to the drugs or their viral load rises above a certain level.
  • Have a viral load of less than 500 copies/ml for at least 3 months before entering the study.
  • Have a CD4 count of at least 300 cells/mm3.
  • Are at least 14 years old (consent of parent or guardian required if under 18).
  • Agree to practice barrier methods of birth control (such as condoms) while on the study and for 3 months after the study ends.
  • Patients may be eligible for the substudy if they:
  • Are at least 18 years old.
  • Have a plasma HIV viral load below 50 copies/ml.

Exclusion Criteria

Patients will not be eligible for this study if they:

  • Are pregnant or breast-feeding.
  • Have had an infection requiring antibiotics, an outbreak of herpes simplex virus (HSV) or herpes zoster, or other illness or surgery within 30 days of study entry. (This study has been changed to exclude patients who have had an outbreak of HSV or herpes zoster or have had surgery within 30 days of study entry.)
  • Currently have any long-term infection other than HIV.
  • Have cancer that requires chemotherapy.
  • Have had lymph node irradiation.
  • Have ever received an HIV vaccine.
  • Have taken certain drugs affecting the immune system within 30 days of study entry.
  • Have taken hydroxyurea within 30 days of study entry.
  • Have received any vaccine within 30 days of study entry.
  • Patients will not be eligible for the substudy if they:
  • Have a history of allergies to egg proteins or neomycin, or a history of other serious allergic reactions.
  • Ever worked closely with canaries in a bird shop or breeding farm.

Plan studiów

Ta sekcja zawiera szczegółowe informacje na temat planu badania, w tym sposób zaprojektowania badania i jego pomiary.

Jak projektuje się badanie?

Szczegóły projektu

  • Główny cel: Leczenie
  • Maskowanie: Podwójnie

Współpracownicy i badacze

Tutaj znajdziesz osoby i organizacje zaangażowane w to badanie.

Sponsor

National Institute of Allergy and Infectious Diseases (NIAID)

Śledczy

  • Krzesło do nauki: Fred Valentine
  • Krzesło do nauki: Laurence Peiperl

Daty zapisu na studia

Daty te śledzą postęp w przesyłaniu rekordów badań i podsumowań wyników do ClinicalTrials.gov. Zapisy badań i zgłoszone wyniki są przeglądane przez National Library of Medicine (NLM), aby upewnić się, że spełniają określone standardy kontroli jakości, zanim zostaną opublikowane na publicznej stronie internetowej.

Główne daty studiów

Ukończenie studiów (Rzeczywisty)

1 września 2005

Daty rejestracji na studia

Pierwszy przesłany

23 maja 2000

Pierwszy przesłany, który spełnia kryteria kontroli jakości

30 sierpnia 2001

Pierwszy wysłany (Oszacować)

31 sierpnia 2001

Aktualizacje rekordów badań

Ostatnia wysłana aktualizacja (Rzeczywisty)

1 listopada 2021

Ostatnia przesłana aktualizacja, która spełniała kryteria kontroli jakości

28 października 2021

Ostatnia weryfikacja

1 października 2021

Więcej informacji

Terminy związane z tym badaniem

Słowa kluczowe

Dodatkowe istotne warunki MeSH

Inne numery identyfikacyjne badania

  • A5057
  • A5058s
  • 10673 (Identyfikator rejestru: DAIDS ES Registry Number)
  • ACTG A5057
  • AACTG A5057

Te informacje zostały pobrane bezpośrednio ze strony internetowej clinicaltrials.gov bez żadnych zmian. Jeśli chcesz zmienić, usunąć lub zaktualizować dane swojego badania, skontaktuj się z register@clinicaltrials.gov. Gdy tylko zmiana zostanie wprowadzona na stronie clinicaltrials.gov, zostanie ona automatycznie zaktualizowana również na naszej stronie internetowej .

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