The Effects of Anti-HIV Therapy on the Immune Systems of Children and Young Adults Infected With HIV

Summary

The purpose of this study is to determine the number of newly formed CD4 cells in children who have taken anti-HIV drugs. The study will also evaluate the effectiveness of the new CD4 cells in producing an immune response to hepatitis A and tetanus toxoid vaccination. Study hypothesis: 1) Immunologic reconstitution of individuals who have less than 15% CD4 cells may or may not be associated with functional activity. 2) The functional immunologic responses to recall and newly experienced antigens may be different. 3) The functional responses to antigens delivered in vaccine format may be a function of CD4 level, viral load, or both.

Timeline

Start

2000-02

Primary completion

—

Completion

2006-09

Publications

• Background Melvin AJ, Mohan KM. Response to immunization with measles, tetanus, and Haemophilus influenzae type b vaccines in children who have human immunodeficiency virus type 1 infection and are treated with highly active antiretroviral therapy. Pediatrics. 2003 Jun;111(6 Pt 1):e641-4. doi: 10.1542/peds.111.6.e641.
• Results Rigaud M, Borkowsky W, Muresan P, Weinberg A, Larussa P, Fenton T, Read JS, Jean-Philippe P, Fergusson E, Zimmer B, Smith D, Kraimer J; Pediatrics AIDS Clinical Trials Group P1006 Team. Impaired immunity to recall antigens and neoantigens in severely immunocompromised children and adolescents during the first year of effective highly active antiretroviral therapy. J Infect Dis. 2008 Oct 15;198(8):1123-30. doi: 10.1086/592050.

Drugs

Indications