A Study to Evaluate the Effects of Giving Interleukin-2 (IL-2) Plus Anti-HIV Therapy to HIV-Positive Patients With CD4 Cell Counts of at Least 350 Cells/mm3

National Institute of Allergy and Infectious Diseases (NIAID) logo

National Institute of Allergy and Infectious Diseases (NIAID)

Status and phase

Phase 2


HIV Infections


Drug: Aldesleukin

Study type


Funder types



SQIL-2 Argentina
10467 (Other Identifier)
IRP 021A

Details and patient eligibility


To demonstrate the safety and tolerability of subcutaneously administered interleukin-2 (IL-2) plus antiretrovirals in patients with HIV infection and CD4 counts of 350 cells/mm3 or more. To demonstrate the immunological efficacy of subcutaneous IL-2 therapy plus antiretroviral therapy relative to antiretroviral therapy alone.

IL-2, given through injection under the skin, in combination with anti-HIV therapy can increase CD4 cell counts. This study examines 3 doses of IL-2 in order to determine the safest and most effective dose to use.

Full description

Interleukin-2 administered subcutaneously, in combination with antiretrovirals, results in increases in CD4+ cell count that might impact upon HIV disease progression. A Phase III trial involving large numbers of HIV-positive patients is the next step in the development process. To develop appropriate clinical experience with the combination, this Phase II trial will allow administration of IL-2 plus antiretroviral therapy to a small number of patients in sites being considered for the Phase III trial.

Patients are randomized to control therapy with antiretrovirals alone (36 patients) or antiretrovirals plus IL-2 given subcutaneously every 12 hours for 5 days every 8 weeks. Three doses of IL-2 are studied, with 12 patients evaluated at each dose.

If at least 9 of the first 12 patients complete the 5-day dosing period without dose-limiting toxicities, the next 12 patients randomized are treated with the next higher dose; if this dose is tolerated, the last 12 patients randomized receive the highest study dose. Patients enrolled at the first two doses of IL-2 who complete three courses have their dose escalated to a maximum of the highest dose.




18+ years old


No Healthy Volunteers

Inclusion and exclusion criteria

Inclusion Criteria

You may be eligible for this study if you:

  • Are HIV-positive.
  • Have a CD4 cell count greater than or equal to 300 cells/mm3.
  • Are at least 18.
  • Have been on antiretroviral therapy for at least 7 days prior to study entry.

Exclusion Criteria

You will not be eligible for this study if you:

  • Abuse alcohol or drugs, or have any serious psychiatric or medical illnesses that would affect your safety or ability to complete the study.
  • Have a history of cancer (other than Kaposi's sarcoma), an AIDS-defining illness, a central nervous system (CNS) abnormality, or an autoimmune/inflammatory disease.
  • Are pregnant or breast-feeding.
  • Have ever received IL-2.

Trial contacts and locations



Data sourced from

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