PMID- 24557341 OWN - NLM STAT- MEDLINE DCOM- 20140902 LR - 20210102 IS - 1421-9662 (Electronic) IS - 0001-5792 (Linking) VI - 132 IP - 1 DP - 2014 TI - HLA-G expression as a prognostic indicator in B-cell chronic lymphocytic leukemia. PG - 53-8 LID - 10.1159/000353757 [doi] AB - BACKGROUND: The expression of human leukocyte antigen (HLA)-G was studied in certain malignancies and its role in escaping from immunosurveillance in cancers was proposed since HLA-G is a non-conventional HLA class I molecule that protects the fetus from immunorecognition during pregnancy. Some particles involved in the regulation of an immune system might represent prognostic value for B-cell chronic lymphocytic leukemia (B-CLL). The identification of novel prognostic factors in B-CLL may help define patient subgroups that may benefit from early therapeutic intervention. OBJECTIVE: To evaluate the prognostic significance of HLA-G expression in B-CLL patients and its relationship with other well-established prognostic markers. METHODOLOGY: Thirty B-CLL patients diagnosed by clinical, morphological and immunophenotyping criteria were studied for HLA-G expression by flow cytometry. The relationship between HLA-G expression and some known prognostic markers was evaluated. RESULTS: HLA-G was expressed in 36.7% of CLL patients at diagnosis, with a mean expression level of 35.31 +/- 12.35%. A significant association between HLA-G expression and common prognostic markers of progressive disease was detected. The group of patients with positive HLA-G expression showed significantly higher absolute lymphocyte counts and serum levels of LDH and beta2-microglobulin, lower platelet counts, positive CD38 expression and advanced stages of Binet clinical staging. CONCLUSION: The present study demonstrated that HLA-G expression correlates with prognostic markers of a poor B-CLL outcome, mainly Binet clinical staging and CD38 expression by B-CLL cells, which indicates that this parameter may play a role as an important prognosticator of disease progression and consequently targeted therapy in B-CLL. CI - (c) 2014 S. Karger AG, Basel. FAU - Attia, Mohamed A AU - Attia MA AD - Department of Clinical Pathology, Tanta University, Faculty of Medicine, Tanta, Egypt. FAU - Nosair, Nahla A AU - Nosair NA FAU - Gawally, Amro AU - Gawally A FAU - Elnagar, Gamal AU - Elnagar G FAU - Elshafey, Eid M AU - Elshafey EM LA - eng PT - Journal Article DEP - 20140215 PL - Switzerland TA - Acta Haematol JT - Acta haematologica JID - 0141053 RN - 0 (Biomarkers, Tumor) RN - 0 (HLA-G Antigens) RN - 0 (Membrane Glycoproteins) RN - EC 3.2.2.5 (CD38 protein, human) RN - EC 3.2.2.6 (ADP-ribosyl Cyclase 1) SB - IM MH - ADP-ribosyl Cyclase 1/blood MH - Aged MH - Biomarkers, Tumor/blood/immunology MH - Cohort Studies MH - Disease Progression MH - Female MH - Flow Cytometry MH - HLA-G Antigens/*blood MH - Humans MH - Immunophenotyping MH - Leukemia, Lymphocytic, Chronic, B-Cell/*blood/*immunology MH - Male MH - Membrane Glycoproteins/blood MH - Middle Aged MH - Prognosis EDAT- 2014/02/22 06:00 MHDA- 2014/09/03 06:00 CRDT- 2014/02/22 06:00 PHST- 2013/01/31 00:00 [received] PHST- 2013/06/11 00:00 [accepted] PHST- 2014/02/22 06:00 [entrez] PHST- 2014/02/22 06:00 [pubmed] PHST- 2014/09/03 06:00 [medline] AID - 000353757 [pii] AID - 10.1159/000353757 [doi] PST - ppublish SO - Acta Haematol. 2014;132(1):53-8. doi: 10.1159/000353757. Epub 2014 Feb 15.