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Published on: March 26, 2018
T-cell large granular lymphocyte leukemia: an Asian perspective.
Yok-Lam Kwong1, Wing-Yan Au, Anskar Y H Leung
1Department of Medicine, University of Hong Kong, Hong Kong, Special Administrative Region, People's Republic of China. ylkwong@hkucc.hku.hk
This study reveals significant differences in T-cell large granular leukemia between Asian and Western patients. Asian patients more commonly experience anemia due to pure red cell aplasia, while Western patients show higher rates of neutropenia, splenomegaly, rheumatoid arthritis, and infections.
Area of Science:
- Hematology
- Oncology
- Immunology
Background:
- T-cell large granular leukemia (T-LGL) is a rare clonal lymphoproliferative disorder.
- Understanding ethnic variations in T-LGL presentation is crucial for diagnosis and management.
Purpose of the Study:
- To characterize the clinical features of T-LGL in Asian populations.
- To compare the clinicopathologic characteristics of Asian T-LGL patients with Western cohorts.
Main Methods:
- Retrospective analysis of 22 Chinese T-LGL patients from a single institute.
- Literature review and combined analysis of 88 Asian and 272 Western T-LGL patients.
Main Results:
- Asian patients exhibited a higher incidence of anemia, primarily due to pure red cell aplasia (PRCA), compared to Western patients (60% vs. 47%).
- Western patients presented more frequently with neutropenia (62% vs. 30%), splenomegaly (40% vs. 15%), rheumatoid arthritis (27% vs. 4%), and recurrent infections (30% vs. 3%).
- PRCA was significantly more common in Asian patients (47% vs. 4%).
Conclusions:
- Significant clinicopathologic differences exist between Asian and Western T-LGL patients.
- These variations suggest potential differences in disease pathogenesis and may influence treatment strategies.
- Anemia due to PRCA is a key distinguishing feature in Asian T-LGL.
