Expression and significance of CD34, CD117 on bone marrow mononuclear cells of patients with myelodysplastic syndrome / 白血病·淋巴瘤

ABSTRACT

Objective To explore the expression and significance of CD34, CD117 on bone marrow mononuclear cells of myelodysplastic syndromes (MDS). Methods Direct immunofluorescence staining was used by means of flow cytometry. 37 patients with MDS were divided into RA/RARS/RCMD subgroup, RAEB Ⅰ/RAEB Ⅱ subgroup; favorable chromosomal subgroup, poor chromosomal subgroup; intermediate-risk Ⅰ subgroup, intermediate-risk Ⅱ subgroup, high-risk subgroup respectively according to WHO classification,cytogenetic abnormalities and international prognostic scoring system (IPSS). Results CD34 and CD117 were positive respectively in 11 of 19 patients with RMRARS/RCMD, all cases in RAEB Ⅰ/RAEB Ⅱ expressed CD34 and CD117; increased expression of CD34 and CD117 was MDS grade-related. Favorable chromosomal subgroup, 14 of 22 patients were positive for CD34, CD117, all cases in poor chromosomes expressed CD34 and CD117; there was a direct relationship between phenotytic density and poor cytogenetic risk factor. CD34 and CD117 expression was present respectively in intermediate-risk Ⅰ (9/17), intermediate-risk Ⅱ (11/11) and highrisk subgroup (9/9); the phenotypic intensity also was correlated with IPSS scores. Conclusion Detection of CD34, CD117 may be a useful tool for subtyping and predicting the prognosis of MDS.