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English Wikipedia
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Refractory chronic lymphocytic leukemia--new therapeutic strategies Schnaiter A; Stilgenbauer SOncotarget 2010[Nov]; 1 (7): 472-482Treatment outcome of chronic lymphocytic leukemia (CLL) has considerably improved since the introduction of fludarabine (F) as part of the standard therapy. Nevertheless, refractoriness to fludarabine occurs in a significant number of patients and is associated with an unfavorable prognosis. Important risk factors are 17p deletion and/or mutation of TP53. For this subgroup the CD52 antibody alemtuzumab (A) presents a new treatment approach and has already been approved. Meanwhile we have to face also refractoriness to alemtuzumab. Importantly, the monoclonal CD20 antibody ofatumumab has now shown efficacy in F and A double-refractory CLL. The next generation CD20 antibody GA-101 is currently compared to rituximab (R) and will possibly be its more potent successor. Further B-cell antigens are targeted by lumiliximab (CD23), TRU-016 (CD37) and blinatumomab (CD19). Apart from monoclonal antibody therapies, a great number of small molecules are examined for the treatment of refractory and relapsed CLL. Most of these agents aim to overcome apoptosis resistance in CLL cells or influence the microenvironment. Typical targets are regulators of the cell cycle and antiapoptotic molecules like the members of the Bcl-2 family. Up to now the most promising agents appear to be flavopiridol and lenalidomide among others.|*Drug Resistance, Neoplasm/drug effects[MESH]|Antibodies, Monoclonal/therapeutic use[MESH]|Antineoplastic Agents/*therapeutic use[MESH]|Histone Deacetylase Inhibitors/therapeutic use[MESH]|Humans[MESH]|Immunotherapy/methods[MESH]|Leukemia, Lymphocytic, Chronic, B-Cell/drug therapy/mortality/*therapy[MESH]|Recurrence[MESH]|Survival Analysis[MESH]|Therapies, Investigational/*methods/trends[MESH]|Vidarabine/analogs & derivatives/therapeutic use[MESH] |
