Phase II trial of subcutaneous injections of human recombinant interleukin-2 for the treatment of mycosis fungoides and Sézary syndrome

Christiane Querfeld, Steven T. Rosen, Joan Guitart, Alfred Rademaker, Francine Foss, Rohit Gupta, Timothy M. Kuzel*

*Corresponding author for this work

Research output: Contribution to journalArticle

16 Scopus citations

Abstract

We conducted a phase II trial to evaluate the efficacy and toxicity of subcutaneous injections of recombinant interleukin (IL)-2 in 22 heavily pretreated patients with advanced cutaneous T-cell lymphoma. We observed modest response rates (18%) with a reasonable toxicity profile. The role of IL-2 in vivo for expansion of cytotoxic CD8+ T cells, CD4+ T cells, regulatory CD25+ T cells, or a combination of these has not been elucidated. There was no evidence of expansion of CD8+ T cells in peripheral blood of patients during treatment. Immunophenotypic analysis revealed an increase of CD25+ cells in CD3+ and CD4+ populations after treatment in a subset of patients possibly reflecting activation of reactive helper T cells, proliferation of neoplastic T cells, or proliferation of T-regulatory cells. In summary, at this dose and schedule recombinant IL-2 is largely ineffective as therapy in patients with advanced cutaneous T-cell lymphoma. Whether IL-2 has the potential to suppress antitumor activity by stimulation of regulatory T cells needs to be clarified.

Original languageEnglish (US)
Pages (from-to)580-583
Number of pages4
JournalJournal of the American Academy of Dermatology
Volume56
Issue number4
DOIs
StatePublished - Apr 1 2007

ASJC Scopus subject areas

  • Dermatology

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