- ICH GCP
- Registro de ensaios clínicos dos EUA
- Ensaio Clínico NCT00001132
Effectiveness of the Early Addition of Abacavir to an Anti-HIV Drug Combination
A Pilot Study of Early Treatment Intensification of Antiretroviral Therapy
The purpose of this study is to see if adding 1 drug to an anti-HIV drug combination early in treatment against HIV can lower the viral load (amount of HIV in the blood) to a level so low that it cannot be measured (undetectable). The drug that will be added to a treatment is abacavir (ABC).
Many patients who take 3 anti-HIV drugs together are able to achieve very low viral loads, for example, viral loads below 50 copies/ml. However, some patients taking only 3 drugs are not able to achieve a viral load this low. Doctors hope that, by adding the drug ABC to a current treatment, a viral load below 50 copies/ml can be achieved. Doctors would like to find out if it is effective to start patients on 3 drugs and then add another drug (treatment intensification) if the treatment is not working as well as hoped.
Visão geral do estudo
Status
Condições
Intervenção / Tratamento
Descrição detalhada
Combination antiretroviral therapy can offer patients potent suppression of HIV replication and improved immunologic functioning. However, despite aggressive antiretroviral regimens currently in use, only about 50 to 60 percent of patients attain plasma viral loads below 50 copies/ml after 24 weeks. Initiating treatment with a 4-drug regimen may increase this percentage, but this may also contribute to patient non-adherence, drug-related toxicities, potential cross-resistance to drugs used in future regimens, and high financial costs. Another strategy is early intensification (adding a single drug to an existing regimen) in patients who are at risk for attaining incomplete viral suppression after 24 weeks of therapy. ABC may produce a significant antiviral effect when used as an intensification agent in patients on a stable antiretroviral regimen. The results of this study will offer insight into the potential benefits of early treatment intensification.
Patients entering this study will have initiated potent antiretroviral therapy. Between 60 and 90 days [AS PER AMENDMENT 1/9/01: 60 and 104 days] after beginning their background regimen, patients are randomized to add either ABC (Arm A) or a matching placebo (Arm B) for 12 weeks. Patients completing 12 weeks of treatment continue on study for an additional 24 weeks to Week 36. Patients discontinue treatment if virologic failure occurs at any time. Patients still return to the clinic for HIV-1 RNA measurements at Weeks 12 and 36, depending on when discontinuation occurred. Patients who discontinue treatment at or after Week 12 due to virologic failure are offered open-label ABC for the remainder of the study (through Week 36). Blood samples are collected at Weeks 4, 8, 12, 20, 28, and 36. Plasma samples for population sequencing of HIV-1 PR and RT genes are collected on all patients at study entry and at the time of virologic failure. Baseline genotype (presence or absence of PR and RT resistance mutations and number of resistance mutations) is correlated to treatment outcome. Samples from the time of failure are analyzed for the accumulation of additional resistance mutations. [AS PER AMENDMENT 5/5/00: Patients and their primary care physicians will be unblinded to the patient's treatment after the study is completed at Week 36 or if virologic failure occurs at or after Week 12 [AS PER AMENDMENT 1/9/01: or if ABC hypersensitivity is suspected].]
Tipo de estudo
Inscrição
Estágio
- Fase 2
Contactos e Locais
Locais de estudo
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California
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Los Angeles, California, Estados Unidos, 90095
- UCLA CARE Ctr
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Menlo Park, California, Estados Unidos, 94025
- Willow Clinic
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San Jose, California, Estados Unidos, 951282699
- Santa Clara Valley Med Ctr / AIDS Community Rsch Consortium
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Stanford, California, Estados Unidos, 943055107
- San Mateo AIDS Program / Stanford Univ
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Stanford, California, Estados Unidos, 943055107
- Stanford Univ Med Ctr
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Torrance, California, Estados Unidos, 90502
- Harbor UCLA Med Ctr
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Colorado
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Denver, Colorado, Estados Unidos, 80262
- Univ of Colorado Health Sciences Ctr
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Florida
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Miami, Florida, Estados Unidos, 331361013
- Univ of Miami School of Medicine
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Georgia
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Atlanta, Georgia, Estados Unidos, 30308
- Emory Univ
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Illinois
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Chicago, Illinois, Estados Unidos, 60611
- Northwestern Univ Med School
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Chicago, Illinois, Estados Unidos, 60612
- Cook County Hosp
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Maryland
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Baltimore, Maryland, Estados Unidos, 21287
- Johns Hopkins Hosp
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Baltimore, Maryland, Estados Unidos, 212052196
- State of MD Div of Corrections / Johns Hopkins Univ Hosp
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Missouri
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St Louis, Missouri, Estados Unidos, 63112
- St Louis Regional Hosp / St Louis Regional Med Ctr
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New York
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Buffalo, New York, Estados Unidos, 14215
- SUNY / Erie County Med Ctr at Buffalo
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New York, New York, Estados Unidos, 10003
- Beth Israel Med Ctr
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New York, New York, Estados Unidos, 10016
- Bellevue Hosp / New York Univ Med Ctr
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New York, New York, Estados Unidos, 10032
- Columbia Presbyterian Med Ctr
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New York, New York, Estados Unidos, 10021
- Aaron Diamond AIDS Rsch Ctr / Rockefeller Univ
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Rochester, New York, Estados Unidos, 14642
- Univ of Rochester Medical Center
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North Carolina
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Chapel Hill, North Carolina, Estados Unidos, 275997215
- Univ of North Carolina
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Durham, North Carolina, Estados Unidos, 27710
- Duke Univ Med Ctr
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Ohio
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Cincinnati, Ohio, Estados Unidos, 452670405
- Univ of Cincinnati
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Pennsylvania
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Philadelphia, Pennsylvania, Estados Unidos, 19104
- Univ of Pennsylvania at Philadelphia
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Philadelphia, Pennsylvania, Estados Unidos, 19104
- Philadelphia Veterans Administration Med Ctr
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South Carolina
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West Columbia, South Carolina, Estados Unidos, 29169
- Julio Arroyo
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Tennessee
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Nashville, Tennessee, Estados Unidos, 37203
- Vanderbilt Univ Med Ctr
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Texas
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Dallas, Texas, Estados Unidos, 75390
- Univ of Texas, Southwestern Med Ctr of Dallas
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Washington
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Seattle, Washington, Estados Unidos, 98104
- Univ of Washington
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San Juan, Porto Rico, 009365067
- Univ of Puerto Rico
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Critérios de participação
Critérios de elegibilidade
Idades elegíveis para estudo
Aceita Voluntários Saudáveis
Gêneros Elegíveis para o Estudo
Descrição
Inclusion Criteria
Patients may be eligible for this study if they:
- Are HIV-positive.
- Have been taking anti-HIV therapy that includes at least 3 anti-HIV drugs and is an acceptable anti-HIV drug combination for 60 to 104 days before study treatment. Patients must not have changed any of the drugs in the 28 days before study entry. (This study has been changed by extending the number of days that anti-HIV therapy has been received.)
- Have a viral load greater than 500 but less than or equal to 10,000 copies/ml and have had a significant decrease in viral load between 49 and 84 days after starting this anti-HIV therapy. (This study has been changed by extending the length of time of viral load decrease.)
- Are at least 13 years old (consent of parent or guardian required if under 18).
- Agree to practice abstinence or use barrier method of birth control (such as condoms) during the study and for 3 months after.
Exclusion Criteria
Patients will not be eligible for this study if they:
- Have ever taken ABC.
- Have received anti-HIV therapy for more than 104 days in the past. (This study has been changed by extending the number of days that anti-HIV therapy has been received.)
- Have a fever for 7 days in the 30 days before study entry.
- Have cancer, including Kaposi's sarcoma, that requires chemotherapy.
- Have an active infection that requires treatment in the 21 days before study entry.
- Have any opportunistic (AIDS-related) infection or disease that requires a change in medication in the 14 days before study entry.
- Have any medical condition or history of an illness that the doctor feels would place them at risk or make them unable to complete the study.
- Are taking drugs that affect the immune system or any experimental anti-HIV drugs, except for their current drug combination.
- Are taking St. John's wort. (This study has been changed. Previously, patients taking St. John's wort were eligible.)
- Have received a vaccine in the 21 days before study entry.
- Are pregnant or breast-feeding.
Plano de estudo
Como o estudo é projetado?
Detalhes do projeto
- Finalidade Principal: Tratamento
- Mascaramento: Dobro
Colaboradores e Investigadores
Investigadores
- Cadeira de estudo: Pablo Tebas
- Cadeira de estudo: John Bartlett
Publicações e links úteis
Datas de registro do estudo
Datas Principais do Estudo
Início do estudo
Conclusão do estudo
Datas de inscrição no estudo
Enviado pela primeira vez
Enviado pela primeira vez que atendeu aos critérios de CQ
Primeira postagem (Estimativa)
Atualizações de registro de estudo
Última Atualização Postada (Estimativa)
Última atualização enviada que atendeu aos critérios de controle de qualidade
Última verificação
Mais Informações
Termos relacionados a este estudo
Palavras-chave
Termos MeSH relevantes adicionais
- Infecções por vírus de RNA
- Doenças Virais
- Infecções
- Infecções transmitidas pelo sangue
- Doenças Transmissíveis
- Doenças Sexualmente Transmissíveis, Virais
- Doenças Sexualmente Transmissíveis
- Infecções por Lentivírus
- Infecções por Retroviridae
- Síndromes de Deficiência Imunológica
- Doenças do sistema imunológico
- Infecções por HIV
- Mecanismos Moleculares de Ação Farmacológica
- Agentes Anti-Infecciosos
- Antivirais
- Inibidores da transcriptase reversa
- Inibidores da Síntese de Ácido Nucleico
- Inibidores Enzimáticos
- Agentes anti-HIV
- Antirretrovirais
- Abacavir
Outros números de identificação do estudo
- ACTG A5064
- AACTG A5064
Essas informações foram obtidas diretamente do site clinicaltrials.gov sem nenhuma alteração. Se você tiver alguma solicitação para alterar, remover ou atualizar os detalhes do seu estudo, entre em contato com register@clinicaltrials.gov. Assim que uma alteração for implementada em clinicaltrials.gov, ela também será atualizada automaticamente em nosso site .