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Introduction: Therapeutic options for mycosis fungoides and Sézary syndrome include a variety of immunomodulatory, epigenetic, and cytotoxic options; however, none has been demonstrated to be efficacious for all patients, or to deliver deep and durable responses to the majority of patients. In this review, we examine the monoclonal antibody, IPH4102, a novel agent for the treatment of cutaneous T-cell lymphoma. Areas covered: In this review, we examine data demonstrating the tissue specificity of KIR3DL2 receptor, which is highly expressed on the malignant cells in cutaneous T-cell lymphoma, including mycosis fungoides and Sézary syndrome. This specificity has led to the development of the agent IPH4102. Preclinical data showing efficacy of IPH4102 in vivo are outlined, as well as the results from Phase I clinical trials, which suggest that the agent is both efficacious and well-tolerated. Larger scale clinical trials are to follow. Expert Opinion: We examine the putative benefit of IPH4102 in comparison to established agents already in the clinic, highlighting its efficacy and relative safety. We also examine possible directions that may better define the role of IPH4102 in the treatment of T-cell lymphoma in the future.

Patients with relapsed or refractory cutaneous T-cell lymphoma (CTCL) display a dismal prognosis and their therapy represents an unmet medical need, as the best treatment strategy is yet to be determined. Exciting data on novel targeted agents are now emerging from recently concluded and ongoing clinical trials in patients with relapsed and refractory CTCL. Three FDA approved compounds are used as single agents including the oral retinoid bexarotene and histone deacetylase inhibitors romidepsin and vorinostat. Brentuximab vedotin, an anti-CD30 drug-conjugated monoclonal antibody, has received from European Commission the orphan designation but has not been approved by EMA yet. Several other molecules have demonstrated their activity in the same context and combination strategies are being explored. Participation in a well designed clinical trial is encouraged, as the introduction of novel agents will continue to expand the therapeutics options available in the management of CTCL., (Copyright © 2017 Elsevier Ltd. All rights reserved.)