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  • Oral presentation
  • Open Access

Clinical features and outcome of adult T-cell leukemia/lymphoma: University of Miami experience

  • 1,
  • 2,
  • 3 and
  • 1Email author
Retrovirology201411 (Suppl 1) :O1

  • Published:


  • Infectious Disease
  • Cancer Research
  • Poor Prognosis
  • Treatment Outcome
  • Partial Response

Adult T-cell leukemia/lymphoma (ATLL) is an aggressive malignancy with a poor prognosis caused by HTLV-I. Miami is proximal to the Caribbean, where HTLV-I is endemic. We have identified at least 140 cases between 1987 and 2013. A total of 108 patients have been analyzed for treatment response, including 51 acute, 50 lymphomatous, 5 chronic (4 unfavorable), and 2 smoldering types. The median overall survival for acute and lymphomatous was 6 and 10 months respectively, and not reached for chronic and smouldering types. Fifty-one patients (33 acute, 11 lymphomatous, 5 chronic, and 2 smouldering) were treated with high-dose AZT/interferon (IFN) as first line therapy. The complete and overall response rates (CR and ORR) for acute/unfavorable chronic vs. lymphomatous types were 27% vs. 9%, and 57% vs. 9% respectively. Three out of 4 (75%) unfavorable chronic type patients responded to AZT/IFN (2 CR, and 1 partial response). Seventy-three patients received chemotherapy at some point during their treatment. The CR rate and ORR for acute/unfavorable chronic vs. lymphomatous-type patients treated with chemotherapy-based regimens were 33 % vs. 17%, and 60% vs. 73% respectively. Five acute type patients who had failed AZT/IFN achieved remission after chemotherapy. By contrast, patients treated with AZT/IFN as second line therapy generally did not respond. Finally, we observed several long-sustained responses in acute and unfavorable chronic subtypes treated with first line AZT/IFN alone translating into a survival benefit. A comprehensive stratified analysis of clinical characteristics, pertinent immunophenotypic markers, and treatment outcome will be presented at the meeting.

Authors’ Affiliations

Division of Hematology-Oncology, Department of Medicine, Sylvester Comprehensive Cancer Center, University of Miami, Miami, FL, USA
Department of Epidemiology & Public Health, University of Miami Miller School of Medicine and Jackson Memorial Hospital, Miami, FL, USA
Department of Pathology and Laboratory Medicine, University of Miami Miller School of Medicine and Jackson Memorial Hospital, Miami, FL, USA


© Pimentel 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 (, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The Creative Commons Public Domain Dedication waiver ( applies to the data made available in this article, unless otherwise stated.