Abstract
Plasma levels of beta-2 microglobulin (β2M), a subunit of the human leukocyte antigen-class I (HLA-I) molecule, correlate negatively with outcome in non-Hodgkin's lymphoma (NHL) and Hodgkin's disease (HD). We examined the clinical relevance of soluble HLA-I (sHLA-I) levels in NHL and HD. Sera from consecutive NHL (n = 65) and HD (n = 37) patients were analyzed in a blinded manner. NHL and HD patients had significantly higher levels of sHLA-1 and β2M than control subjects. In NHL patients, sHLA-I levels correlated with clinical behavior in a fashion similar to that of β2M. However, multivariate analysis incorporating β2M, sHLA-I, and international prognostic index (IPI) indicated that NHL patients with elevated (>312.6 μg/100 mL) sHLA-I levels had significantly shorter survival, independent of IPI score as well as β2M. In HD patients, β2M but not sHLA-I levels were associated with clinical behavior. These findings not only establish the role of sHLA-I as an independent tumor marker in NHL that can be used to stratify patients, but also suggest that β2M and sHLA-I may reflect different biological processes in HD and NHL. Further studies are needed to assess whether the immunomodulatory properties of sHLA-I may be responsible for its divergence from β2M as an indicator of clinical behavior in HD.
Original language | English (US) |
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Pages (from-to) | 139-145 |
Number of pages | 7 |
Journal | Leukemia Research |
Volume | 31 |
Issue number | 2 |
DOIs | |
State | Published - Feb 2007 |
Keywords
- Beta-2 microglobulin
- Hodgkin's disease
- Human leukocyte antigen-class I
- Immune modulation
- Non-Hodgkin's lymphoma
ASJC Scopus subject areas
- Hematology
- Oncology
- Cancer Research