Interleukin-2 Increases CD4+ lymphocyte numbers but does not enhance responses to immunization: results of A5046s.

Valdez, Hernan; Mitsuyasu, Ronald; Landay, Alan; Sevin, Anne D; Chan, Ellen S; Spritzler, John; Kalams, Spyros A; Pollard, Richard B et al. · J Infect Dis · 2003

prospective_cohort · Level II

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Abstract

To ascertain whether CD4(+) lymphocyte increases induced by interleukin (IL)-2 enhanced in vivo immune responses, 38 human immunodeficiency virus (HIV)-infected patients who had received highly active antiretroviral therapy (HAART) or HAART and IL-2 for at least 60 weeks were immunized with tetanus toxoid, inactivated glycoprotein 120-depleted HIV-1, and hepatitis A and B vaccines. Despite dramatic increases in CD4(+) lymphocyte counts, IL-2 did not enhance immunization responses.

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