Protocol Number: 01-I-0126
HIV-infected patients 18 years of age and older with a viral load under 10,000 copies per milliliter and a CD4+ T cell count between 50 and 299 cells per cubic millimeter who are taking antiretroviral therapy and who have not previously received IL-2 therapy may be eligible for this study. Candidates will be screened with a medical history, physical examination, and blood and urine tests. Participation in the study will be from 4.5 to 6 years, depending on what point in the duration of the study the individual patient is enrolled. Patients will be randomly assigned to receive IL-2 plus ART or ART alone. All participants will be advised individually about the best ART regimen for them. Patients in the IL-2 treatment group will be taught how to self-inject IL-2 under the skin (similar to insulin injections). They will inject IL-2 twice a day for 5 days every 8 weeks for the first year (until week 49 of the study). From week 49 on they may receive 5-day cycles of IL-2 every 4 months when needed to maintain CD4+ T cell count elevations. An extra cycle may be given 2 months after the week 49 follow-up visit (see follow-up schedule below), depending on their CD4+ T cell count. Patients whose cell counts have not increased after 12 to 16 months of IL-2 treatment will discuss with the doctor the possibility of stopping IL-2. Those who do stop IL-2 treatment will be asked to remain in the study for follow-up evaluations. All patients will be followed in the clinic every 2 months for the first year of the study (weeks 1, 9, 17, 25, 33, 41 and 49) and every 4 months during years 2-6 for a brief history and physical exam, urine and blood tests, return of diary cards (record of drug side effects) and medication review. During the visits from the second year on, patients will also be asked about their ability to do certain ordinary tasks, such as taking care of themselves; how active they are; and how much assistance they need. Between 1 and 14 days after the end of the study, participants will have a brief medical history, physical exam, blood tests and will be asked about any HIV-related conditions they have. A blood sample will be drawn again between 15 and 30 days after the study ends.
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