BACKGROUND Patients with chronic lymphocytic leukemia whose cells express CD38 and ZAP-70 and utilize unmutated Ig VH region genes have a very poor prognosis. We studied whether cells expressing CD38 and ZAP-70 are more susceptible to stimulation through B-cell receptors than are cells that do not express CD38 and ZAP-70. DESIGN AND METHODS CD38-positive and CD38-negative leukemic cells were ...

Chronic lymphocytic leukemia is characterized by clonal proliferation and progressive accumulation of B-cell lymphocytes that typically express CD19+, CD5+ and CD23+. The lymphocytes usually infiltrate the bone marrow, peripheral blood, lymph nodes, and spleen. The diagnosis is established by immunophenotyping circulating B-lymphocytes, and prognosis is defined by two staging systems (Rai and B...

PI3K signaling is now targeted in first clinical trials in patients with B cell malignancies, including Chronic Lymphocytic Leukemia (CLL), which represent one of the first molecularly targeted therapies for B cell malignancies.

BACKGROUND Flow cytometry allows specific assessment of the expression of ZAP-70, a promising new prognostic factor in B-cell chronic lymphocytic leukemia (B-CLL), but suffers from a lack of multicenter standardization. DESIGN AND METHODS An optimized method for direct detection of ZAP-70 in flow cytometry was tested in a multicenter fashion. Adapted for frozen cells, this method includes a n...

Chronic lymphocytic leukemia (CLL) is one of the most prevalent B-cell cancers for people over age 65. CLL commonly comorbid with trisomy 12, as reported in up to 20% cases. In our case, 12 was incidentally found on this patient. Its pathophysiology quite unclear but has played a role side effect profile CLL. Trisomy been shown have increased risk effects like thrombocytopenia, Richter transfor...

We have studied the antileukemic effects of cyclosporin-A (CyA) on the cells of a number of human hematopoietic biopsies and established cell lines in vitro. Cya killed the tumor cells but not the nonmalignant control cells from three of four patients with T-lymphocytic leukemia/lymphoma at concentrations comparable to those recommended in clinical long-term immunosuppressive therapy. The leuke...

BACKGROUND Chronic lymphocytic leukemia is a neoplastic disorder that arises largely as a result of defective apoptosis leading to chemoresistance. Stromal cell-derived factor-1 and its receptor, CXCR4, have been shown to play an important role in chronic lymphocytic leukemia cell trafficking and survival. DESIGN AND METHODS Since histone acetylation is involved in the modulation of gene expr...

Response to fludarabine in B-cell chronic lymphocytic leukemia patients previously treated with chlorambucil as up-front therapy and a CHOP-like regimen as second line therapy

Patients with chronic lymphocytic leukemia or non-Hodgkin’s lymphoma are at risk of infectious diseases of respiratory system because of immunodeficiency. Occurrence of organizing pneumonia in leukemic patients is most commonly correlated with bone marrow transplant or treatment with antimitotic agents. There have been only four reported cases of organizing pneumonia related solitarily to leuke...

Chronic lymphocytic leukemia is frequently associated with immune disturbances. The relationship between chronic lymphocytic leukemia and autoimmune cytopenias, particularly autoimmune hemolytic anemia and immune thrombocytopenia, is well established. The responsible mechanisms, particularly the role of leukemic cells in orchestrating the production of polyclonal autoantibodies, are increasingl...