期刊
BLOOD
卷 115, 期 22, 页码 4393-4402出版社
AMER SOC HEMATOLOGY
DOI: 10.1182/blood-2009-06-225979
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- Medical Research Council [MC_U132670597] Funding Source: Medline
- MRC [MC_U132670597] Funding Source: UKRI
- Medical Research Council [MC_U132670597] Funding Source: researchfish
CD20 is an important target for the treatment of B-cell malignancies, including non-Hodgkin lymphoma as well as autoimmune disorders. B-cell depletion therapy using monoclonal antibodies against CD20, such as rituximab, has revolutionized the treatment of these disorders, greatly improving overall survival in patients. Here, we report the development of GA101 as the first Fc-engineered, type II humanized IgG1 antibody against CD20. Relative to rituximab, GA101 has increased direct and immune effector cell-mediated cytotoxicity and exhibits superior activity in cellular assays and whole blood B-cell depletion assays. In human lymphoma xenograft models, GA101 exhibits superior antitumor activity, resulting in the induction of complete tumor remission and increased overall survival. In nonhuman primates, GA101 demonstrates superior B cell-depleting activity in lymphoid tissue, including in lymph nodes and spleen. Taken together, these results provide compelling evidence for the development of GA101 as a promising new therapy for the treatment of B-cell disorders. (Blood. 2010; 115(22): 4393-4402)
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