Recent phase I and phase II trials using recombinant human interleukin-12 (rhIL-12) for cutaneous T cell lymphoma (CTCL) have been completed. Observations on 32 evaluable patients revealed an overall response rate approaching 50 percent. Biopsy of regressing lesions revealed an increase in numbers of CD8+ and/or TIA-1+ T cells. These results suggest that rhIL-12 may induce lesion regression by augmenting antitumor cytotoxic T cell responses. Future trials will be focused on strategies for further immune enhancement by the concomitant use of additional immune augmenting cytokines with rhIL-12.
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Rook et al. (2001) studied this question.
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