The Safety and Effectiveness of MK-639 and Zidovudine, Used Alone and Together, in HIV-Infected Patients Who Have Never Taken Anti-HIV Drugs
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To compare the effects on CD4 counts and safety of MK-639 (indinavir, IDV) and AZT administered concomitantly to MK-639 alone and AZT alone in HIV-1 seropositive patients.
Condition or disease
Drug: Indinavir sulfateDrug: Zidovudine
Patients are randomized to 1 of 3 groups for 12 months of treatment. Group 1 receives MK-639 plus AZT. Group 2 receives MK-639 alone. Group 3 receives AZT alone. Safety and tolerability are assessed by the incidence of clinical and laboratory adverse experiences. Blood and urine samples are collected for safety assessment and to determine CD4 cell counts and serum viral RNA levels. If therapy with MK-639 alone or with AZT is found to be generally safe and clinically efficacious, patients who have completed the study will have the opportunity to continue in an extension study protocol on a treatment regimen including MK-639.
Twelve-Month Study in HIV-1 Seropositive Retroviral-Naive Patients to Compare the Safety and Efficacy of MK-639 and Zidovudine (AZT) Administered Concomitantly to MK-639 Alone and Zidovudine (AZT) Alone
Estimated Study Completion Date
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Ages Eligible for Study:
18 Years and older (Adult, Senior)
Sexes Eligible for Study:
Accepts Healthy Volunteers:
Patients must have:
Average CD4 count between 50 and 500 cells/mm3 based on 2 separate pre-study determinations at least 1 week apart.
Patients with known hemophilia may be enrolled at the discretion of the investigator.
Any protease inhibitor.
Significant prior use (greater than 2 weeks) of nucleoside analogues.
Chronic therapy for an active opportunistic infection. (Allowed:
Prophylaxis with aerosolized pentamidine, trimethoprim/sulfamethoxazole, dapsone, topical antifungals, and isoniazid).
Investigational agents or immunomodulators within 30 days prior to study entry.
Patients with the following symptoms or conditions are excluded: