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lüll Immunotherapy of malignant disease with tumor antigen-specific monoclonal antibodies Campoli M; Ferris R; Ferrone S; Wang XClin Cancer Res 2010[Jan]; 16 (1): 11-20A few tumor antigen (TA)-specific monoclonal antibodies (mAb) have been approved by the Food and Drug Administration for the treatment of several major malignant diseases and are commercially available. Once in the clinic, mAbs have an average success rate of approximately 30% and are well tolerated. These results have changed the face of cancer therapy, bringing us closer to more specific and more effective biological therapy of cancer. The challenge facing tumor immunologists at present is represented by the identification of the mechanism(s) underlying the patients' differential clinical response to mAb-based immunotherapy. This information is expected to lead to the development of criteria to select patients to be treated with mAb-based immunotherapy. In the past, in vitro and in vivo evidence has shown that TA-specific mAbs can mediate their therapeutic effect by inducing tumor cell apoptosis, inhibiting the targeted antigen function, blocking tumor cell signaling, and/or mediating complement- or cell-dependent lysis of tumor cells. More recent evidence suggests that TA-specific mAb can induce TA-specific cytotoxic T-cell responses by enhancing TA uptake by dendritic cells and cross-priming of T cells. In this review, we briefly summarize the TA-specific mAbs that have received Food and Drug Administration approval. Next, we review the potential mechanisms underlying the therapeutic efficacy of TA-specific mAbs with emphasis on the induction of TA-specific cellular immune responses and their potential to contribute to the clinical efficacy of TA-specific mAb-based immunotherapy. Lastly, we discuss the potential negative effect of immune escape mechanisms on the clinical efficacy of TA-specific mAb-based immunotherapy.|Antibodies, Monoclonal/*therapeutic use[MESH]|Antigens, Neoplasm/*immunology[MESH]|Drug Resistance, Neoplasm[MESH]|Humans[MESH]|Neoplasms/*drug therapy[MESH]|T-Lymphocytes, Helper-Inducer/immunology[MESH] |