Currently, no prognostic factors exist for determining the host immune status of chronic lymphocytic leukemia (CLL) patients. Therefore, the present report analyzed cluster of differentiation 14 (CD14)+ human leukocyte antigen (HLA)-DRlow/- myeloid-derived suppressor cells (MDSC) from 49 CLL patients and demonstrated that these cells were significantly expanded in all CLL patients when compared with monoclonal B cell lymphocytosis patients and healthy volunteers. Furthermore, upregulation of CD14+HLA-DRlow/- MDSCs was correlated with CLL tumor progression and a poor prognosis for CLL patients, and CD14+HLA-DRlow/- MDSCs were significantly correlated with the presence of CD4+ T and CD5+CD19+ cells in CLL patients, which could significantly inhibit the CD4+ T-cell immune response, contributing to CLL cell progression in CLL patients.
Keywords: CD14+HLA-DRlow/−; chronic lymphocytic leukemia; prognostic factor.