Volume 8 Supplement 1

15th International Conference on Human Retroviruses: HTLV and Related Viruses

Open Access

Presence of cutaneous lesion is a poor prognostic factor in patients with smoldering-type adult T-cell leukemia-lymphoma

  • Kentaro Yonekura1, 2Email author,
  • Atae Utsunomiya3,
  • Kazuhiro Kawai1,
  • Yoshifusa Takatsuka3,
  • Shogo Takeuchi3,
  • Masahito Tokunaga3,
  • Ayumu Kubota3,
  • Tamotsu Kanzaki2,
  • Youhei Uchida1 and
  • Takuro Kanekura1
Retrovirology20118(Suppl 1):A35

https://doi.org/10.1186/1742-4690-8-S1-A35

Published: 6 June 2011

Background

Prognosis of indolent types of adult T-cell leukemia-lymphoma (ATL) including the smoldering type was recently reported to be poorer than that shown in previous studies. Prognostic factors of smoldering-type ATL have not been defined. Cutaneous-type, which is defined as cases of smoldering type predominantly involve skin with or without peripheral blood involvement has been proposed as a distinct clinical subtype. Prognosis of cutaneous-type ATL was reported to be poorer than that of smoldering-type without cutaneous involvement.

Aim

To determine prognostic factors for survival and disease progression of smoldering-type ATL.

Patients

Thirty-one patients with smoldering-type ATL including 21 with cutaneous lesion.

Methods

Multivariate Cox proportional hazards model was used to identify variables associated with survival and disease progression. Peripheral blood abnormal lymphocytes (<5% vs ≥5%), serum lactate dehydrogenase (normal vs high), albumin level (<4 vs ≥4 g/dl), and cutaneous lesion (none vs present) were used as variables. Overall survival (OS) and progression-free survival (PFS) were estimated using the Kaplan-Meier method and compared using the log-rank test.

Results

In the multivariate analysis, presence of cutaneous lesion was the significant prognostic factor for PFS (hazard ratio, 8.69; 95% confidence interval, 1.4-54.0; P = 0.02). Peripheral blood abnormal lymphocytes, serum lactate dehydrogenase, or albumin level was not significant. None of the variables was significantly associated with OS in the multivariate analysis. OS (P = 0.117) and PFS (P = 0.089) of the patients with cutaneous lesion were worse as compared to those of the patients without cutaneous lesion, though statistically not significant.

Conclusions

In this study we confirmed that presence of cutaneous lesion is an independent prognostic factor in patients with smoldering-type ATL. Cases of smoldering-type with cutaneous lesion should be classified as cutaneous-type ATL irrespective of the peripheral blood involvement.

Authors’ Affiliations

(1)
Department of Dermatology, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima
(2)
Department of Dermatology, Imamura Bun-in Hospital, Kagoshima
(3)
Department of Hematology, Imamura Bun-in Hospital, Kagoshima

Copyright

© Yonekura et al; licensee BioMed Central Ltd. 2011

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.

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