Volume 11 Supplement 1

16th Interntional Conference on Human Retroviruses: HTLV and Related Viruses

Open Access

Effect of a novel anti-CCR4 monoclonal antibody (Mogamulizmab) on skin lesions of adult T-cell leukemia-lymphoma (ATL) and its adverse skin reactions (ASR)

  • Kentaro Yonekura1Email author,
  • Tamotsu Kanzaki1,
  • Nobuaki Nakano2,
  • Masahito Tokunaga2,
  • Ayumu Kubota2,
  • Shogo Takeuchi2,
  • Yoshifusa Takatsuka2 and
  • Atae Utsunomiya2
Retrovirology201411(Suppl 1):P24

https://doi.org/10.1186/1742-4690-11-S1-P24

Published: 7 January 2014

We studied the effects of Mogamulizmab on ATL and its adverse reactions in 10 patients with ATL, among them 6 patients had skin lesions. Informed consent was obtained prior to study. Four out of 6 patients with cutaneous involvement showed complete response (CR), with 4 to 8 cycles of treatments. Of interest were two cases which appeared to have worsened in the early phase of treatment because of enlargement of cutaneous nodules or tumors. It, however, was found to be actually improving determined from histopathological examinations, i.e., more inflammatory cell infiltration and edema with less number of lymphoma cells in the skin. Eventually, these two patients showed CR. Furthermore, 2 each patients with 4 CR patients showed no recurrence with ASR, i.e., erythema and plaque, and showed reccurence without ASR. ASR were observed in 4 out of 10 patients. All these ASR fortunately subsided later. Immunohistopathological examinations revealed the infiltration of cytotoxic T-lymphocytes in the dermis. These results suggest that 1) Mogamulizmab had excellent effects (4/6) to suppress the growth of cutaneous lesions in ATL, 2) ASR might be favorable signs of the effects (2/4), and 3) ASR (4/10) were not serious. Studies of plasma and tissue levels of Mogamulizmab and T-reg cells may reveal the action mechanism of this novel anti-CCR4 agent in detail.

Authors’ Affiliations

(1)
Department of Dermatology, Imamura Bun-in Hospital
(2)
Department of Hematology, Imamura Bun-in Hospital

Copyright

© Yonekura et al; licensee BioMed Central Ltd. 2014

This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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