Effectiveness of Giving an HIV Vaccine (Remune) to HIV-Positive Patients Receiving an Anti-HIV Drug Combination
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
調査の概要
詳細な説明
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:
- 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.
- 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.]
- Patients suppressed with 3 or more antiretroviral drugs and whose HIV-1 RNA is 50 copies/ml or higher.
- 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.]
研究の種類
入学
段階
- フェーズ 3
連絡先と場所
研究場所
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California
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Los Angeles、California、アメリカ、900331079
- USC CRS
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Palo Alto、California、アメリカ、943055107
- Stanford CRS
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San Francisco、California、アメリカ、941102859
- Ucsf Aids Crs
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Florida
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Miami、Florida、アメリカ、331361013
- Univ. of Miami AIDS CRS
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Hawaii
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Honolulu、Hawaii、アメリカ、96816
- Univ. of Hawaii at Manoa, Leahi Hosp.
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Maryland
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Baltimore、Maryland、アメリカ、21287
- Johns Hopkins Adult AIDS CRS
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Massachusetts
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Boston、Massachusetts、アメリカ、02114
- Massachusetts General Hospital ACTG CRS
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Boston、Massachusetts、アメリカ、02215
- Beth Israel Deaconess Med. Ctr., ACTG CRS
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Boston、Massachusetts、アメリカ、02215
- Brigham and Women's Hosp. ACTG CRS
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Boston、Massachusetts、アメリカ
- Bmc Actg Crs
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New York
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New York、New York、アメリカ、10003
- Beth Israel Med. Ctr., ACTU
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New York、New York、アメリカ、10016
- NY Univ. HIV/AIDS CRS
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Rochester、New York、アメリカ、14642
- Univ. of Rochester ACTG CRS
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North Carolina
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Chapel Hill、North Carolina、アメリカ、275997215
- Unc Aids Crs
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Ohio
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Cleveland、Ohio、アメリカ、44106
- Case CRS
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Pennsylvania
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Philadelphia、Pennsylvania、アメリカ、19104
- Hosp. of the Univ. of Pennsylvania CRS
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Tennessee
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Nashville、Tennessee、アメリカ、37203
- Vanderbilt Therapeutics CRS
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参加基準
適格基準
就学可能な年齢
健康ボランティアの受け入れ
受講資格のある性別
説明
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.
研究計画
研究はどのように設計されていますか？
デザインの詳細
- 主な目的：処理
- マスキング：ダブル
協力者と研究者
捜査官
- スタディチェア：Fred Valentine
- スタディチェア：Laurence Peiperl
研究記録日
主要日程の研究
研究の完了 (実際)
試験登録日
最初に提出
QC基準を満たした最初の提出物
最初の投稿 (見積もり)
学習記録の更新
投稿された最後の更新 (実際)
QC基準を満たした最後の更新が送信されました
最終確認日
詳しくは
本研究に関する用語
キーワード
追加の関連 MeSH 用語
その他の研究ID番号
- A5057
- A5058s
- 10673 (レジストリ識別子：DAIDS ES Registry Number)
- ACTG A5057
- AACTG A5057
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