Fc variants having increased affinity for fcyrllc
First Claim
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1. A protein comprising an Fc variant region comprising amino acid substitutions at residues 236 and 239, wherein said amino acid substitutions are an alanine or a serine that is not the wild-type amino acid at position 236 and an aspartic acid that is not the wild-type amino acid at position 239, wherein said Fc variant is not a human IgG2 and wherein numbering is according to the EU index.
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Abstract
The present invention relates to Fc variants having increased affinity for FcγRIIc, methods for their generation, Fc polypeptides comprising optimized Fc variants, and methods for using optimized Fc variants.
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9 Claims
- 1. A protein comprising an Fc variant region comprising amino acid substitutions at residues 236 and 239, wherein said amino acid substitutions are an alanine or a serine that is not the wild-type amino acid at position 236 and an aspartic acid that is not the wild-type amino acid at position 239, wherein said Fc variant is not a human IgG2 and wherein numbering is according to the EU index.
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8. A protein comprising an Fc variant region comprising amino acid substitutions at residues 236 and 239, wherein said amino acid substitutions are an alanine that is not the wild-type amino acid at position 236 and an aspartic acid that is not the wild-type amino acid at position 239, wherein said Fc variant is not a human IgG2 and wherein numbering is according to the EU index.
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9. A protein comprising an Fc variant region comprising amino acid substitutions at residues 236 and 239, wherein said amino acid substitutions are a serine that is not the wild-type amino acid at position 236 and an aspartic acid that is not the wild-type amino acid at position 239, wherein said Fc variant is not a human IgG2 and wherein numbering is according to the EU index.
Specification