Alefacept-induced decreases in circulating blood lymphocyte counts correlate with clinical response in patients with chronic plaque psoriasis

Jean Paul Ortonne, Mark Lebwohl, Christopher Em Griffiths, Kirk Barber, Eileen Murray, Marc Bourcier, Wayne Gulliver, Richard Langley, Lynn Guenther, Kim Papp, Jerry Tan, Yves Poulin, Michel Heenen, Julien Lambert, Michel De La Brassine, Knud Kragballe, Frederik Grönhöj-Larsen, Philippe Humbert, Gerard Guillet, Pierre ThomasJean Luc Schmutz, Louis Dubertret, Gerard Lorette, Wolfram Sterry, Peter Altmeyer, Gottfried Wozel, Enno Christophers, Gustav Mahrle, Uwe Frithjof Haustein, Gerd Plewig, Thomas Luger, Mario Leicha, Maximiliano Aragües, Adolpho Aliaga, J. D. Bos, Peter Van De Kerkhof, Arnold Oranje, James Ferguson, Lesley Rhodes, Jonathan Barker, Dow Stough, Regina Hamlin, Stacy Smith, Margaret Drehobl, Nick Lowe, Robert Brown, Christopher Nelson, James Aton, Mark Ling, Kenneth Gordon, Donald Belsito, Daniel Stewart, Craig Leonardi, Michael Heffernan, Thomas Casale, David Hassman, Diane Baker, Janet Roberts, Harold Farber, Ellen Frankel, Keith Loven, Hans Sander, Peter Hino, John Gonzalez, Thomas Nigra

    Research output: Contribution to journalArticlepeer-review


    This international, double-blind study examined the effects of alefacept on circulating lymphocytes in 507 patients with chronic plaque psoriasis, and determined whether these effects were related to clinical improvement. Patients were randomized to intramuscular placebo, alefacept 10 mg, or alefacept 15 mg once weekly for 12 weeks followed by 12 weeks of observation. Alefacept dose-dependently reduced CD4+ and CD8+ memory T cells, while sparing the naïve population. The greatest reductions in disease activity occurred in patients with the largest decreases in memory T cells. For example, a ≥ 50% reduction from baseline Psoriasis Area Severity Index at any time during treatment or follow-up was observed in 66% of patients who had the greatest reductions in CD4+ memory T cells versus in 40% of patients who had the smallest reductions in this T-cell subset. These results provide further support for the deleterious roles of CD4+ and CD8+ memory T-cell subpopulations in psoriasis pathogenesis.
    Original languageEnglish
    Pages (from-to)117-123
    Number of pages6
    JournalEuropean Journal of Dermatology
    Issue number2
    Publication statusPublished - Mar 2003


    • Alefacept
    • Amevive®
    • Efficacy
    • Pharmacodynamics
    • Psoriasis
    • T lymphocytes


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