GLYCAN-OPTIMIZED ANTI-CD20 ANTIBODIES
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United States of America Patent
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app pub date -
May 5, 2008
filing date -
Jan 17, 2006
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Abstract
Glycan-optimized monoclonal antibodies that specifically bind CD20 antigen and which have improved effector function are provided. The anti-CD20 antibodies of the invention have a glycosylation pattern that results in an antibody composition having predominately the G0 glycoform, and thus comprise N-glycans that lack fucose (i.e., afucosylated) and galactose residues attached thereto. In some embodiments, these anti-CD20 antibodies comprise the light chain and heavy chain sequences of the rituximab anti-CD20 antibody, and thus represent afucosylated rituximab. Methods for producing these glycan-optimized anti-CD20 antibodies are also provided.
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