US2021009690A1PendingUtilityA1

Methods and compositions for inhibiting cd32b expressing cells

Assignee: XENCOR INCPriority: May 30, 2007Filed: Sep 24, 2020Published: Jan 14, 2021
Est. expiryMay 30, 2027(~0.8 yrs left)· nominal 20-yr term from priority
C07K 16/00C07K 2317/71A61P 19/02C07K 2317/73C07K 2317/524C07K 2317/53C07K 2317/732A61P 35/00C07K 2317/734A61P 37/06A61P 37/08C07K 16/283C07K 2317/72C07K 2317/92C07K 2317/52C07K 2317/76A61P 29/00C07K 16/2803C07K 16/2878C07K 2317/24C07K 2317/77A61P 1/00C07K 16/2851C07K 2317/31A61P 3/10A61K 2039/505
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Claims

Abstract

The present invention relates to immunoglobulins that bind FcγRIIb+ cells and coengage the antigen on the cell's surface and an FcγRIIb on the cell's surface, methods for their generation, and methods for using the immunoglobulins.

Claims

exact text as granted — not AI-modified
We claim: 
     
         1 . A nucleic acid encoding an Fc variant comprising at least amino acid modifications S267E and L328F as compared to a human Fc polypeptide, wherein numbering is according to the EU index according to Kabat. 
     
     
         2 . An expression vector comprising the nucleic acid of  claim 1 . 
     
     
         3 . A host cell comprising the vector of  claim 2 . 
     
     
         4 . A nucleic acid encoding a heavy chain an antibody, the heavy chain comprising an Fc variant comprising at least amino acid modifications S267E and L328F as compared to a human Fc polypeptide, wherein numbering is according to the EU index according to Kabat. 
     
     
         5 . An expression vector comprising the nucleic acid of  claim 4 . 
     
     
         6 . A host cell comprising the vector of  claim 5 .

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