We aimed to investigate gene expression pattern and to explore its methylation heterogeneity in chronic lymphocytic leukemia (CLL). Eighty one CLL patients and 75 healthy subjects were enrolled and prognostic evaluation of patients was assessed. q-realtime PCR was performed using Applied Biosystems, TaqMan gene expression assay. gene-specific CpG methylation was investigated in real time using pyrosequencing technology. was differentially expressed in CLL patients. The CpG sites-1, 2 and 3 showed significantly higher mean levels than healthy controls (p = <0.001, 0.007 and 0.009). Significant association between CpG site-1 and CLL has been detected using age-adjusted logistic regression (p < 0.001). Hypermethylation at gene CpG sites (1,2,3) is a characteristic feature in CLL.