Abstract
B-cell chronic lymphatic leukemia (B-CLL) has emerged as a prototype of malignancies characterized by a defective apoptosis that leads to a progressive accumulation of monoclonal B cells in the bone marrow, lymphoid tissues and peripheral blood. Chlorambucil, an aromatic derivative of nitrogen mustards, is the most common treatment for chronic lymphatic leukemia (CLL). The response rate with its use is 40 to 60%, with 3 to 10% only of patients achieving a complete response (CR). To improve response rates, chlorambucil has been combined with steroids or other agents. Theophylline, a methylxanthine commonly used as a treatment for asthma, has been shown to induce apoptosis in CLL cells both in vitro and in vivo. Chlorambucil induces apoptosis in CLL cells as well and synergy has been shown between the two drugs without affecting the normal B lymphocytes. The aim of this work was to evaluate the potential utility of this combination as a therapeutic modality for B-CLL. A total of 210 B-CLL patients were recruited and randomized to receive either chlorambucil in an oral dose of 0.1 mg/kg/day indefinitely (109 patients) or chlorambucil 0.1 mg/kg/day plus theophylline 200 mg bid, orally (101 patients). The main endpoints were overall...Continue Reading
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