conclusions according to this study, igvh3 mutation was found to be prevalent (although a correlation was found to exist between the patients’ survival and igvh mutation, it was not statistically significant). we can conclude that clinical methods are still valuable to predict the prognosis of patients with cll. given the high cost and need for specialized laboratory, determining the cost and v...

BACKGROUND Chronic lymphocytic leukaemia (CLL) is a heterogeneous disease; many patients never need treatment, whereas some have poor outcomes. New treatments, which can induce complete remissions, allow patients with poor outlook to be treated while they are still asymptomatic. Whether or not the IgVH gene is mutated is the best predictor of clinical outcome, but this assay is unsuited to the ...

BACKGROUND B-cell chronic lymphocytic leukemia is a clinically heterogeneous disease; some patients rapidly progress and die within a few years of diagnosis, whereas others have a long life expectancy with minimal or no treatment. Telomere length and telomerase levels have been proposed as prognostic factors; however, very few cases have been characterized for both parameters and no study has a...

Although the zeta-associated protein of 70 kDa (ZAP-70) is overexpressed in patients with chronic lymphocytic leukemia (CLL) displaying unmutated IGVH genes and poor prognosis, a previous microarray study from our group identified overexpression of LPL and ADAM29 genes among unmutated and mutated CLL, respectively. To assess the prognostic value of these genes, we quantified their expression by...

Abnormalities of p53 have been associated with short survival and non-response to therapy in chronic lymphocytic leukaemia (CLL). We have evaluated the rate of response to fludarabine as first-line therapy in 54 patients with advanced stage CLL, analysing the cytogenetic profile, aberrations in p53, including the methylation status of its promoter, and the immunoglobulin heavy-chain variable-re...

BACKGROUND AND OBJECTIVES ZAP-70 expression is a recognized prognostic marker in chronic lymphocytic leukemia (CLL). The aim of this study was to analyze whether the methylation status of the ZAP-70 gene is associated with expression of the ZAP-70 protein. DESIGN AND METHODS Patients with CLL (n=87), acute lymphoblastic leukemia (n=13), mantle cell leukemia (n=13) and splenic marginal zone ly...

Background: Chronic lymphocytic leukemia (CLL) is a common blood cancer in people aged over 40. In addition to clinical and pathologic staging and blood tests, immunoglobulin variable heavy chain (IgVH) mutation analysis is a relevant prognostic factor for CLL. Finding the most prevalent mutation type and conducting a molecular analysis of immunoglobulin in the majority of the patients can cont...

BACKGROUND Increased CD38 expression by leukemic cells has been suggested as an adverse prognostic factor in B-CLL. Several approaches have been proposed to quantify its level of expression by flow cytometry. METHODS We compared the use of (i) the percentage of CD38 positive cells, (ii) CD38 antibodies bound per cell (ABC), and (iii) a semi-quantitative method based on the shape of the CD38 h...