Human leucocyte antigen class I and killer immunoglobulin-like receptor expression patterns in T-cell large granular lymphocyte leukaemia

Grzegorz S. Nowakowski, William G. Morice, Robert L. Phyliky, Chin Yang Li, Ayalew Tefferi

Research output: Contribution to journalArticlepeer-review

20 Scopus citations

Abstract

T-cell large granular lymphocyte leukaemia (T-LGLL) is often associated with suppression of haematopoiesis through unknown mechanisms. Killer immunoglobulin-like receptors (KIRs) binding human-leucocyte antigen (HLA)-I in an allele-specific manner are frequently expressed by T-LGLL cells. HLA-I genotyping was performed in seven T-LGLL cases in which the neoplastic cells were known to express a single KIR isoform (CD158a, CD158b or CD158e). Five cases showed absence of the cognate HLA-I antigen for the expressed KIR isoform, resulting in KIR/HLA-I 'mismatch'. Cytopenias occurred in all five 'mismatch' patients but not in two patients with 'match', suggesting that KIR/HLA-I mismatch may contribute to the suppression of haematopoiesis.

Original languageEnglish (US)
Pages (from-to)490-492
Number of pages3
JournalBritish journal of haematology
Volume128
Issue number4
DOIs
StatePublished - Feb 1 2005

Keywords

  • Chronic T-cell
  • Cytopenia
  • Human-leucocyte antigen
  • Leukaemia
  • Natural killer cells

ASJC Scopus subject areas

  • Hematology

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