Abstract: The present invention relates to anti-PD-L1 antibodies, bispecific antibodies containing one domain with specificity to PD-L1, and to immunocytokines comprising an anti-PD-L1 antibody fused to a cytokine, such as IL-2. The present invention also provides methods of treatment, uses and pharmaceutical compositions comprising the antibodies, bispecific antibodies and immunocytokines.
Type:
Grant
Filed:
April 6, 2017
Date of Patent:
March 31, 2020
Assignee:
Kymab Limited
Inventors:
Jamie Campbell, Nikole Sandy Nee Waddell, Stephen D. Gillies, Volker Germaschewski, Cassandra van Krinks, Ian Kirby, Miha Kosmac, Steve Arkinstall, Thomas Gallagher
Abstract: The invention relates to an approach for introducing one or more desired insertions and/or deletions of known sizes into one or more predefined locations in a nucleic acid (eg, in a cell or organism genome). They developed techniques to do this either in a sequential fashion or by inserting a discrete DNA fragment of defined size into the genome precisely in a predefined location or carrying out a discrete deletion of a defined size at a precise location. The technique is based on the observation that DNA single-stranded breaks are preferentially repaired through the HDR pathway, and this reduces the chances of indels (eg, produced by NHEJ) in the present invention and thus is more efficient than prior art techniques. The invention also provides sequential insertion and/or deletions using single- or double-stranded DNA cutting.
Abstract: The present invention relates inter alia to expression vector production as well as application to the production of host cells for protein repertoire expression and high-throughput screening. The invention also relates to primers useful for PCR amplification of nucleotide sequences encoding human antibody variable domains.
Type:
Application
Filed:
May 9, 2019
Publication date:
October 3, 2019
Applicant:
Kymab Limited
Inventors:
Allan BRADLEY, E-Chiang LEE, Qi LIANG, Hui LIU, Andrew WOOD, Vivian WONG
Abstract: The present invention relates inter alia to expression vector production as well as application to the production of host cells for protein repertoire expression and high-throughput screening. The invention also relates to primers useful for PCR amplification of nucleotide sequences encoding human antibody variable domains.
Type:
Grant
Filed:
September 18, 2014
Date of Patent:
July 2, 2019
Assignee:
KYMAB LIMITED
Inventors:
Allan Bradley, E-Chiang Lee, Qi Liang, Hui Liu, Andrew Wood, Vivian Wong
Abstract: The present invention relates to humanisation of antibodies in vivo. The invention provides non-human vertebrates, cells, populations and methods useful for humanising chimaeric antibodies in vivo. Using the present invention it is possible straightforwardly and rapidly to obtain antigen-specific antibodies that are fully human (ie, comprising human variable and constant regions) and have undergone recombination, junctional diversification, affinity maturation and isotype switching in vivo in a non-human vertebrate system. Furthermore, such antibodies are humanised (eg, totally human)—and selected—totally in vivo, and as such the present invention harnesses in vivo filtering for expressibility, affinity and biophysical characteristics in the context of the desired human variable and constant region pairings. This is avoids problems of down-grading antibody characteristics when humanising the constant region of chimaeric antibodies in vitro.
Abstract: The invention discloses methods for the generation of chimaeric human—non-human antibodies and chimaeric antibody chains, antibodies and antibody chains so produced, and derivatives thereof including fully humanized antibodies; compositions comprising the antibodies, antibody chains and derivatives, as well as cells, non-human mammals and vectors, suitable for use in the methods.
Type:
Grant
Filed:
August 29, 2017
Date of Patent:
March 12, 2019
Assignee:
Kymab Limited
Inventors:
Allan Bradley, E-Chiang Lee, Qi Liang, Wei Wang, Dominik Spensberger, Hui Liu, Jasper Clube
Abstract: The invention discloses methods for the generation of chimaeric human-non-human antibodies and chimaeric antibody chains, antibodies and antibody chains so produced, and derivatives thereof including fully humanized antibodies; compositions comprising said antibodies, antibody chains and derivatives, as well as cells, non-human mammals and vectors, suitable for use in said methods.
Type:
Grant
Filed:
November 14, 2013
Date of Patent:
January 1, 2019
Assignee:
Kymab Limited
Inventors:
Allan Bradley, E-Chiang Lee, Qi Liang, Wei Wang
Abstract: Antibodies that bind to the circumsporozoite protein (CSP) of Plasmodium falciparum. Use of such antibodies as anti-malarial agents, to confer protection against infection by malarial parasites such as P. falciparum by insect vector transmission. Diagnosis of malaria using anti-CSP antibodies. Methods of determining efficacy of candidate vaccine compositions in development and testing of anti-malarial vaccines.
Type:
Application
Filed:
May 11, 2018
Publication date:
December 20, 2018
Applicants:
KYMAB LIMITED, ATRECA, INC.
Inventors:
Qi Liang, Sean Matthew Carroll, Daniel Eric Emerling, Allan Bradley, Paul Kellam, Spela Binter, Simon James Watson
Abstract: The invention discloses methods for the generation of chimaeric human—non-human antibodies and chimaeric antibody chains, antibodies and antibody chains so produced, and derivatives thereof including fully humanized antibodies; compositions comprising said antibodies, antibody chains and derivatives, as well as cells, non-human mammals and vectors, suitable for use in said methods.
Type:
Grant
Filed:
April 1, 2016
Date of Patent:
December 11, 2018
Assignee:
Kymab Limited
Inventors:
E-Chiang Lee, Jasper Clube, Allan Bradley
Abstract: The invention discloses methods for the generation of chimaeric human-non-human antibodies and chimaeric antibody chains, antibodies and antibody chains so produced, and derivatives thereof including fully humanized antibodies; compositions comprising said antibodies, antibody chains and derivatives, as well as cells, non-human mammals and vectors, suitable for use in said methods.
Type:
Grant
Filed:
October 16, 2014
Date of Patent:
September 4, 2018
Assignee:
Kymab Limited
Inventors:
Allan Bradley, E-Chiang Lee, Qi Liang, Wei Wang, Glenn Friedrich
Abstract: The present invention relates inter alia to improvements in the production of chimaeric antibodies in non-human transgenic vertebrates such as mice and rats bearing one or more chimaeric antibody transgenes. In particular, the invention provides for improved non-human vertebrates and cells in which VpreB has been species-matched with the variable region of the chimaeric antibodies. Also, embodiments also provide for species-matching of the entire surrogate light chain for efficient pairing with chimaeric heavy chains during B-cell development in vivo in a non-human transgenic vertebrate setting.
Type:
Grant
Filed:
March 26, 2014
Date of Patent:
May 8, 2018
Assignee:
Kymab Limited
Inventors:
Allan Bradley, E-Chiang Lee, Qi Liang, Dominik Spensberger, Nicholas England
Abstract: Antibodies that bind ICOS (Inducible T cell Co-Stimulator). Therapeutic use of anti-ICOS antibodies for modulating the ratio between regulatory T cells and effector T cells, to stimulate the immune system of patients, including use in treating cancers. Methods of producing anti-ICOS antibodies, including species cross-reactive antibodies, using transgenic knock-out mice.
Type:
Grant
Filed:
September 7, 2017
Date of Patent:
May 1, 2018
Assignee:
Kymab Limited
Inventors:
Richard Charles Alfred Sainson, Stephen John Arkinstall, Jamie Iain Campbell, Mohammed Hanif Ali, E-Chiang Lee, Matthew John McCourt, Nikole Sandy, Cassandra Van Krinks, Volker Germaschewski, Ian Kirby, Miha Kosmac, Thomas Gallagher, Cecilia Deantonio, Stephen D. Gillies