Human T-lymphotropic virus 1 (HTLV-1)-associated lichenoid dermatitis induced by CD8+T cells in HTLV-1 carrier, HTLV-1-associated myelopathy/tropical spastic paraparesis and adult T-cell leukemia/lymphoma

Tokura, Yoshiki, Ito, Taisuke, Kawakami, Chika, Sugita, Kazunari, Kasuya, Akira, Tatsuno, Kazuki, Sawada, Yu, Nakamura, Motonobu and Shimauchi, Takatoshi 2015. Human T-lymphotropic virus 1 (HTLV-1)-associated lichenoid dermatitis induced by CD8+T cells in HTLV-1 carrier, HTLV-1-associated myelopathy/tropical spastic paraparesis and adult T-cell leukemia/lymphoma. The Journal of Dermatology 42 (10) , pp. 967-974. 10.1111/1346-8138.12980

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Abstract

Human T-lymphotropic virus type 1 (HTLV-1) induces adult T-cell leukemia/lymphoma (ATLL), HTLV-1-associated myelopathy/tropical spastic paraparesis (HAM/TSP) and carrier. ATLL is a mature CD4+CD25+CCR4+ T-cell neoplasm, and approximately half of patients have direct skin involvement manifesting patch, plaque, tumor, multiple papules, erythroderma and purpura. However, there exist secondary eruptions without tumor cell infiltration in patients with ATLL or HAM/TSP and carriers of HTLV-1. To clarify the presence of reactive skin eruptions in HTLV-1-infected individuals, we reviewed our patients with HTLV-1-associated diseases. In 2002–2012, we saw 50 ATLL or HAM/TSP patients and HTLV-1 carriers presenting with skin lesions. We retrospectively selected cases that histologically showed lichenoid tissue reactions with predominant infiltration of CD8+ T cells, but not CD4+ tumor cells. The cases included erythroderma (HTLV-1 carrier), lichen planus (HTLV-1 carrier), alopecia areata (HAM/TSP), chronic actinic dermatitis (HTLV-1 carrier to acute ATLL conversion) and discoid lupus erythematosus (smoldering ATLL). They were graft-versus-host disease-like, major secondary lesions and seen in HTLV-1 carriers and patients with HAM/TSP and smoldering ATLL. We coin the term HTLV-1-associated lichenoid dermatitis (HALD) to encompass the conditions. HALD may occur in association with the elevated immunity toward HTLV-1-infected CD4+ T cells, thus sharing the pathogenetic role of cytotoxic T cells with HAM/TSP.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Medicine
Subjects:	R Medicine > R Medicine (General) R Medicine > RL Dermatology
Uncontrolled Keywords:	adult T-cell leukemia/lymphoma carrier;CD8+ T cell;cytotoxic lymphocytes;human T-lymphotropic virus 1-associated myelopathy;human T-lymphotropic virus type 1;lichenoid dermatitis
Publisher:	Wiley
ISSN:	0385-2407
Date of Acceptance:	1 May 2014
Last Modified:	12 Jun 2019 15:22
URI:	https://orca.cardiff.ac.uk/id/eprint/85657

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