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Imiquimod 5% cream for treatment of HIV-negative Kaposi's sarcoma skin lesions: A phase I to II, open-label trial in 17 patients.

Author(s): Celestin Schartz NE, Chevret S, Paz C, Kerob D, Verola O, Morel P, Lebbe C

Affiliation(s): Department of Dermatology 2, Hopital Saint Louis AP-HP, Paris, France. noel.schartz@noos.fr

Publication date & source: 2008-04, J Am Acad Dermatol., 58(4):585-91. Epub 2008 Feb 20.

Publication type: Research Support, Non-U.S. Gov't

BACKGROUND: Kaposi's sarcoma (KS), a virus-associated neoplasm, can be treated locally or systemically with interferon alfa. Therefore, imiquimod, an immune response modifier able to induce interferon-alpha secretion in situ, could prove a good local treatment for KS skin lesions. OBJECTIVE: We sought to determine the efficacy and safety of imiquimod 5% cream for the topical treatment of classic or endemic KS skin lesions in patients who are HIV negative. METHODS: We conducted a prospective, open-label, single center, phase II clinical trial. Imiquimod cream was applied under occlusion 3 times a week for 24 weeks. The main efficacy end points were the safety of topical imiquimod and the overall clinical response in patients evaluated on the basis of modified AIDS Clinical Trials Group criteria at 36 weeks. The statistical analysis was based on the intent-to-treat data set. RESULTS: Seventeen patients were enrolled. Eight (47%) presented objective overall clinical response (2 complete and 6 partial responses). Tumor progression was noted in 6 patients. The most frequent side effects were local itching and erythema, seen in 9 patients (53%). LIMITATIONS: This was not a randomized placebo-controlled study and was restricted to a small number of patients. CONCLUSION: Topical imiquimod 5% cream had antitumor activity in about half the patients with classic and endemic KS and was generally well tolerated.

Page last updated: 2008-03-26

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