Granted Patent
B2
US 12,617,872 · App. 19/330,727 · Granted May 5, 2026
Heterodimeric human IgG1 polypeptides with isoelectric point modifications
Assignee:
Xencor, Inc.
C07K16/468C07K16/00C07K14/521C07K14/522C07K14/523C07K14/525C07K14/535C07K14/54C07K14/5428C07K14/5434C07K14/55C07K14/70521C07K14/7151C07K14/745C07K14/755C07K16/22C07K16/2803C07K16/2809C07K16/283C07K16/2878C07K2317/31C07K2317/35C07K2317/52C07K2317/94C07K2319/30
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Abstract
The invention relates generally to compositions and methods for purifying the desired species from a mixture of desired heterodimer and contaminating homodimer immunoglobulin variants by modifying the isoelectric point(s) of the individual chains.
Claims (1)
1 . A composition comprising a variant human IgG1 heavy chain constant region comprising the amino acid substitutions L351K and T366K, wherein numbering is according to the EU index, and wherein the variant human IgG1 heavy chain constant region has at least 95% sequence identity to SEQ ID NO: 2.
Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST
Recorded Oct 8, 2025
From: MOORE, GREGORY; LAZAR, GREGORY
To: XENCOR, INC.
Reel/Frame 072511/0164 →
ASSIGNMENT OF ASSIGNOR'S INTEREST
Recorded Sep 19, 2025
From: BERNETT, MATTHEW J.; MOORE, GREGORY L.; DESJARLAIS, JOHN; RASHID, RUMANA
To: XENCOR, INC.
Reel/Frame 072319/0289 →
Continuity (8)
Continuation In Part
13568028
· Aug 6, 2012
Provisional Application
61598686
· Feb 14, 2012
Provisional Application
61593846
· Feb 1, 2012
Provisional Application
61545498
· Oct 10, 2011
References Cited (400)
US 3691016A
· Patel
· 1972
[cited by applicant]
US 3773919A
· Boswell et al.
· 1973
[cited by applicant]
US 3969287A
· Jaworek
· 1976
[cited by applicant]
US 4169888A
· Hanka et al.
· 1979
[cited by applicant]
US 4179337A
· Davis et al.
· 1979
[cited by applicant]
US 4195128A
· Hildebrand et al.
· 1980
[cited by applicant]
US 4229537A
· Hodgins et al.
· 1980
[cited by applicant]
US 4247642A
· Hiorhara et al.
· 1981
[cited by applicant]
US 4256746A
· Miyashita et al.
· 1981
[cited by applicant]
US 4294757A
· Asai
· 1981
[cited by applicant]
US 4301144A
· Iwashita et al.
· 1981
[cited by applicant]
US 4307016A
· Asai et al.
· 1981
[cited by applicant]
US 4313946A
· Powell et al.
· 1982
[cited by applicant]
US 4315929A
· Freedman et al.
· 1982
[cited by applicant]
US 4322348A
· Asai et al.
· 1982
[cited by applicant]
US 4330440A
· Ayers et al.
· 1982
[cited by applicant]
US 4331598A
· Hasegawa et al.
· 1982
[cited by applicant]
US 4361650A
· Asai et al.
· 1982
[cited by applicant]
US 4362663A
· Kida et al.
· 1982
[cited by applicant]
US 4364866A
· Asai et al.
· 1982
[cited by applicant]
US 4364935A
· Kung et al.
· 1982
[cited by applicant]
US 4371533A
· Akimoto et al.
· 1983
[cited by applicant]
US 4424219A
· Hashimoto et al.
· 1984
[cited by applicant]
US 4450254A
· Isley et al.
· 1984
[cited by applicant]
US 4496689A
· Mitra et al.
· 1985
[cited by applicant]
US 4640835A
· Shimizu et al.
· 1987
[cited by applicant]
US 4670417A
· Iwasaki et al.
· 1987
[cited by applicant]
US 4753894A
· Frankel et al.
· 1988
[cited by applicant]
US 4791192A
· Nakagawa et al.
· 1988
[cited by applicant]
US 4880935A
· Thorpe
· 1989
[cited by applicant]
US 4923990A
· Nakano et al.
· 1990
[cited by applicant]
US 4943533A
· Mendelsohn et al.
· 1990
[cited by applicant]
US 4970198A
· Lee et al.
· 1990
[cited by applicant]
US 5053394A
· Ellestad et al.
· 1991
[cited by applicant]
US 5070092A
· Kanda et al.
· 1991
[cited by applicant]
US 5084468A
· Saito et al.
· 1992
[cited by applicant]
US 5101038A
· Nakano et al.
· 1992
[cited by applicant]
US 5122368A
· Greenfield et al.
· 1992
[cited by applicant]
US 5187186A
· Kanda et al.
· 1993
[cited by applicant]
US 5208020A
· Chari et al.
· 1993
[cited by applicant]
US 5264586A
· Nicolaou et al.
· 1993
[cited by applicant]
US 5384412A
· Nicolaou et al.
· 1995
[cited by applicant]
US 5416064A
· Chari et al.
· 1995
[cited by applicant]
US 5475092A
· Chari et al.
· 1995
[cited by applicant]
US 5500362A
· Robinson et al.
· 1996
[cited by applicant]
US 5530101A
· Queen et al.
· 1996
[cited by applicant]
US 5541087A
· Lo et al.
· 1996
[cited by applicant]
US 5550246A
· Nicolaou et al.
· 1996
[cited by applicant]
US 5558864A
· Bendig et al.
· 1996
[cited by applicant]
US 5585089A
· Queen et al.
· 1996
[cited by applicant]
US 5585097A
· Bolt et al.
· 1996
[cited by applicant]
US 5585499A
· Chari et al.
· 1996
[cited by applicant]
US 5622929A
· Willner et al.
· 1997
[cited by applicant]
US 5635483A
· Pettit et al.
· 1997
[cited by applicant]
US 5641780A
· Amishiro et al.
· 1997
[cited by applicant]
US 5663149A
· Pettit et al.
· 1997
[cited by applicant]
US 5677171A
· Hudziak et al.
· 1997
[cited by applicant]
US 5693761A
· Queen et al.
· 1997
[cited by applicant]
US 5693762A
· Queen et al.
· 1997
[cited by applicant]
US 5703080A
· Nakakura et al.
· 1997
[cited by applicant]
US 5712374A
· Kuntsmann et al.
· 1998
[cited by applicant]
US 5714586A
· Kuntsmann et al.
· 1998
[cited by applicant]
US 5726044A
· Lo et al.
· 1998
[cited by applicant]
US 5731168A
· Carter et al.
· 1998
[cited by applicant]
US 5736137A
· Anderson et al.
· 1998
[cited by applicant]
US 5739116A
· Hamann et al.
· 1998
[cited by applicant]
US 5767237A
· Sakakibara et al.
· 1998
[cited by applicant]
US 5767285A
· Hamann et al.
· 1998
[cited by applicant]
US 5770701A
· McGahren et al.
· 1998
[cited by applicant]
US 5770710A
· McGahren et al.
· 1998
[cited by applicant]
US 5773001A
· Hamann et al.
· 1998
[cited by applicant]
US 5780588A
· Pettit et al.
· 1998
[cited by applicant]
US 5807706A
· Carter et al.
· 1998
[cited by applicant]
US 5821333A
· Carter et al.
· 1998
[cited by applicant]
US 5821337A
· Carter et al.
· 1998
[cited by applicant]
US 5824805A
· King et al.
· 1998
[cited by applicant]
US 5834597A
· Tso et al.
· 1998
[cited by applicant]
US 5846545A
· Chari et al.
· 1998
[cited by applicant]
US 5859205A
· Adair et al.
· 1999
[cited by applicant]
US 5877291A
· Mezes et al.
· 1999
[cited by applicant]
US 5877296A
· Hamann et al.
· 1999
[cited by applicant]
US 5891996A
· Mateo de Acosta del Rio et al.
· 1999
[cited by applicant]
US 5892020A
· Mezes et al.
· 1999
[cited by applicant]
US 5945311A
· Lindhofer et al.
· 1999
[cited by applicant]
US 5968509A
· Gorman et al.
· 1999
[cited by applicant]
US 6054297A
· Carter et al.
· 2000
[cited by applicant]
US 6071515A
· Mezes et al.
· 2000
[cited by applicant]
US 6124431A
· Sakakibara et al.
· 2000
[cited by applicant]
US 6177078B1
· Lopez
· 2001
[cited by applicant]
US 6180370B1
· Queen et al.
· 2001
[cited by applicant]
US 6214345B1
· Firestone et al.
· 2001
[cited by applicant]
US 6235883B1
· Jakobovits et al.
· 2001
[cited by applicant]
US 6329507B1
· Mezes et al.
· 2001
[cited by applicant]
US 6407213B1
· Carter et al.
· 2002
[cited by applicant]
US 6441163B1
· Chari et al.
· 2002
[cited by applicant]
US 6455677B1
· Park et al.
· 2002
[cited by applicant]
US 6506883B2
· Mateo de Acosta del Rio et al.
· 2003
[cited by applicant]
US 6602684B1
· Umana et al.
· 2003
[cited by applicant]
US 6632927B2
· Adair et al.
· 2003
[cited by applicant]
US 6706265B1
· Bolt et al.
· 2004
[cited by applicant]
US 6716410B1
· Witztum
· 2004
[cited by applicant]
US 6723538B2
· Mack et al.
· 2004
[cited by applicant]
US 6884869B2
· Senter et al.
· 2005
[cited by applicant]
US 6989452B2
· Ng et al.
· 2006
[cited by applicant]
US 7087600B2
· Ng et al.
· 2006
[cited by applicant]
US 7112324B1
· Dorken et al.
· 2006
[cited by applicant]
US 7129261B2
· Ng et al.
· 2006
[cited by applicant]
US 7183076B2
· Arathoon et al.
· 2007
[cited by applicant]
US 7276497B2
· Chari et al.
· 2007
[cited by applicant]
US 7303749B1
· Chari
· 2007
[cited by applicant]
US 7368565B2
· Chari et al.
· 2008
[cited by applicant]
US 7498302B2
· Ng et al.
· 2009
[cited by applicant]
US 7507420B2
· Ng et al.
· 2009
[cited by applicant]
US 7517903B2
· Chen et al.
· 2009
[cited by applicant]
US 7521541B2
· Eigenbrot
· 2009
[cited by applicant]
US 7601354B2
· Chari
· 2009
[cited by applicant]
US 7632497B2
· Stavenhagen
· 2009
[cited by applicant]
US 7642228B2
· Carter et al.
· 2010
[cited by applicant]
US 7657380B2
· Lazar et al.
· 2010
[cited by applicant]
US 7691962B2
· Boyd et al.
· 2010
[cited by applicant]
US 7695936B2
· Carter et al.
· 2010
[cited by applicant]
US 7696338B2
· Neville, Jr. et al.
· 2010
[cited by applicant]
US 7728114B2
· Mach et al.
· 2010
[cited by applicant]
US 7850962B2
· Teeling et al.
· 2010
[cited by applicant]
US 8063187B2
· Chu et al.
· 2011
[cited by applicant]
US 8084582B2
· Dahiyat et al.
· 2011
[cited by applicant]
US 8114967B2
· Bhatt et al.
· 2012
[cited by applicant]
US 8188231B2
· Lazar et al.
· 2012
[cited by applicant]
US 8216805B2
· Carter et al.
· 2012
[cited by applicant]
US 8236308B2
· Kischel et al.
· 2012
[cited by applicant]
US 8309690B2
· Allan et al.
· 2012
[cited by applicant]
US 8367805B2
· Chamberlain et al.
· 2013
[cited by applicant]
US 8409568B2
· Gao et al.
· 2013
[cited by applicant]
US 8592562B2
· Kannan et al.
· 2013
[cited by applicant]
US 8637641B2
· Dahiyat et al.
· 2014
[cited by applicant]
US 8946387B2
· Koenig et al.
· 2015
[cited by applicant]
US 9181334B2
· Kobayashi et al.
· 2015
[cited by applicant]
US 9650446B2
· Moore et al.
· 2017
[cited by applicant]
US 9822181B2
· Bonvini et al.
· 2017
[cited by applicant]
US 9822186B2
· Bernett et al.
· 2017
[cited by applicant]
US 9856327B2
· Bernett et al.
· 2018
[cited by applicant]
US 20010035606A1
· Schoen
· 2001
[cited by applicant]
US 20020076406A1
· Leung
· 2002
[cited by applicant]
US 20020103345A1
· Zhu
· 2002
[cited by applicant]
US 20020131968A1
· Waldmann et al.
· 2002
[cited by applicant]
US 20030003097A1
· Reff et al.
· 2003
[cited by applicant]
US 20030017979A1
· Mack et al.
· 2003
[cited by applicant]
US 20030040426A1
· Barrera et al.
· 2003
[cited by applicant]
US 20030157108A1
· Presta
· 2003
[cited by applicant]
US 20040242851A1
· Zhu
· 2004
[cited by applicant]
US 20050100543A1
· Hansen et al.
· 2005
[cited by applicant]
US 20050142133A1
· Lazar et al.
· 2005
[cited by applicant]
US 20050176028A1
· Hofmeiser et al.
· 2005
[cited by applicant]
US 20050191702A1
· Mack et al.
· 2005
[cited by applicant]
US 20050238648A1
· Jacobs
· 2005
[cited by applicant]
US 20060018897A1
· Lee et al.
· 2006
[cited by applicant]
US 20060073142A1
· Chan et al.
· 2006
[cited by applicant]
US 20060134105A1
· Lazar et al.
· 2006
[cited by applicant]
US 20060134150A1
· Werling et al.
· 2006
[cited by applicant]
US 20060235208A1
· Lazar
· 2006
[cited by applicant]
US 20070148170A1
· Desjarlais
· 2007
[cited by applicant]
US 20080044413A1
· Hammond et al.
· 2008
[cited by applicant]
US 20080213273A1
· Burge
· 2008
[cited by applicant]
US 20080219974A1
· Bernett et al.
· 2008
[cited by applicant]
US 20080242845A1
· Lazar et al.
· 2008
[cited by applicant]
US 20080279851A1
· Coyle et al.
· 2008
[cited by applicant]
US 20090214539A1
· Grosmaire et al.
· 2009
[cited by applicant]
US 20090252729A1
· Farrington et al.
· 2009
[cited by applicant]
US 20100150918A1
· Kufer et al.
· 2010
[cited by applicant]
US 20100226925A1
· Dillon et al.
· 2010
[cited by applicant]
US 20100256339A1
· Bossenmaier et al.
· 2010
[cited by applicant]
US 20100256340A1
· Brinkmann et al.
· 2010
[cited by applicant]
US 20100330089A1
· Damle et al.
· 2010
[cited by applicant]
US 20110189178A1
· Desjarlais et al.
· 2011
[cited by applicant]
US 20110217302A1
· Odegard et al.
· 2011
[cited by applicant]
US 20110293619A1
· Kufer et al.
· 2011
[cited by applicant]
US 20120034228A1
· Kufer et al.
· 2012
[cited by applicant]
US 20120251541A1
· Baurin et al.
· 2012
[cited by applicant]
US 20130018174A1
· Igawa et al.
· 2013
[cited by applicant]
US 20130095097A1
· Blakenship et al.
· 2013
[cited by applicant]
US 20130101586A1
· Riegler et al.
· 2013
[cited by applicant]
US 20130129723A1
· Blakenship et al.
· 2013
[cited by applicant]
US 20140024111A1
· Kannan et al.
· 2014
[cited by applicant]
US 20140056879A1
· Lazar
· 2014
[cited by applicant]
US 20140072581A1
· Dixit et al.
· 2014
[cited by applicant]
US 20140161790A1
· Desjarlais et al.
· 2014
[cited by applicant]
US 20140212435A1
· Moore et al.
· 2014
[cited by applicant]
US 20140294835A1
· Moore et al.
· 2014
[cited by applicant]
US 20140377269A1
· Mabry et al.
· 2014
[cited by applicant]
US 20150071948A1
· Lazar et al.
· 2015
[cited by applicant]
US 20160060360A1
· Moore et al.
· 2016
[cited by applicant]
US 20160068588A1
· Bernett et al.
· 2016
[cited by applicant]
US 20160176969A1
· Bernett et al.
· 2016
[cited by applicant]
US 20180305465A1
· Stevens et al.
· 2018
[cited by applicant]
US 20190352362A1
· Bernett et al.
· 2019
[cited by applicant]
US 20210102002A1
· Bernett et al.
· 2021
[cited by applicant]
US 20230257466A1
· Desjarlais et al.
· 2023
[cited by applicant]
US 20230331813A1
· Bernett et al.
· 2023
[cited by applicant]
US 20240025968A1
· Bernett et al.
· 2024
[cited by applicant]
CN 107840891A
· 2018
[cited by applicant]
EP 0425235B1
· 1996
[cited by applicant]
EP 1391213
· 2002
[cited by applicant]
EP 1752471
· 2007
[cited by applicant]
EP 1829895A1
· 2007
[cited by applicant]
EP 2006381A1
· 2008
[cited by applicant]
EP 2009101A1
· 2008
[cited by applicant]
EP 2194066A1
· 2010
[cited by applicant]
EP 2202245A1
· 2010
[cited by applicant]
EP 2522724A1
· 2012
[cited by applicant]
EP 2155788
· 2014
[cited by applicant]
EP 3199628A1
· 2017
[cited by applicant]
EP 3252078
· 2017
[cited by applicant]
EP 3339326A1
· 2018
[cited by applicant]
EP 3594232A1
· 2020
[cited by applicant]
EP 3594233A1
· 2020
[cited by applicant]
JP 2003111595A
· 2003
[cited by applicant]
RU 2014114179A
· 2015
[cited by applicant]
WO WO1987005330A1
· 1987
[cited by applicant]
WO WO9211018
· 1992
[cited by applicant]
WO WO9321232
· 1993
[cited by applicant]
WO WO9413804A1
· 1994
[cited by applicant]
WO WO9520045A1
· 1995
[cited by applicant]
WO WO96027011
· 1996
[cited by applicant]
WO WO9640210A1
· 1996
[cited by applicant]
WO WO1997024373
· 1997
[cited by applicant]
WO WO1997044352A1
· 1997
[cited by applicant]
WO WO98050431
· 1998
[cited by applicant]
WO WO199937791A1
· 1999
[cited by applicant]
WO WO99054440
· 1999
[cited by applicant]
WO WO1999054440
· 1999
[cited by applicant]
WO WO99066951
· 1999
[cited by applicant]
WO WO200061739A1
· 2000
[cited by applicant]
WO WO200124763A2
· 2001
[cited by applicant]
WO WO200129246A1
· 2001
[cited by applicant]
WO WO2001024763A2
· 2001
[cited by applicant]
WO WO2001029246A1
· 2001
[cited by applicant]
WO WO200162931A2
· 2001
[cited by applicant]
WO WO2001062931A1
· 2001
[cited by applicant]
WO WO200188138A1
· 2001
[cited by applicant]
WO WO2001083525A2
· 2001
[cited by applicant]
WO WO2001088138
· 2001
[cited by applicant]
WO WO2001090192A2
· 2001
[cited by applicant]
WO WO200216368
· 2002
[cited by applicant]
WO WO2002016368A1
· 2002
[cited by applicant]
WO WO200230954A1
· 2002
[cited by applicant]
WO WO200231140A1
· 2002
[cited by applicant]
WO WO2002030954A1
· 2002
[cited by applicant]
WO WO2002088172A2
· 2002
[cited by applicant]
WO WO2002062850A2
· 2002
[cited by applicant]
WO WO2002083180A1
· 2002
[cited by applicant]
WO WO2002098883
· 2002
[cited by applicant]
WO WO2004056875A1
· 2003
[cited by applicant]
WO WO2004010957A2
· 2004
[cited by applicant]
WO WO2004043493
· 2004
[cited by applicant]
WO WO2004103272
· 2004
[cited by applicant]
WO WO2004106383
· 2004
[cited by applicant]
WO WO2005063816
· 2005
[cited by applicant]
WO WO2005092925A2
· 2005
[cited by applicant]
WO WO2005103083A2
· 2005
[cited by applicant]
WO WO2005112919A2
· 2005
[cited by applicant]
WO WO2005118635
· 2005
[cited by applicant]
WO WO2006006693A1
· 2006
[cited by applicant]
WO WO2006020258
· 2006
[cited by applicant]
WO WO2006034488
· 2006
[cited by applicant]
WO WO2006036834
· 2006
[cited by applicant]