Abstract
Provided are bispecific and multi-specific antibodies that target both claudin 18.2 (CLDN18.2) and 4-1BB. These antibodies, in the absence of CLDN18.2-expressing cells, can bind to 4-1BB but are unable to activate 4-1BB signaling. In the presence of CLDN18.2-expressing cells, however, these antibodies can trigger CLDN18.2-dependent 4-1BB signaling, leading to potent immune response to the CLDN18.2-expressing tumor cells.
Full Text
What is claimed is:
Provided are bispecific and multi-specific antibodies that target both claudin 18.2 (CLDN18.2) and 4-1BB. These antibodies, in the absence of CLDN18.2-expressing cells, can bind to 4-1BB but are unable to activate 4-1BB signaling. In the presence of CLDN18.2-expressing cells, however, these antibodies can trigger CLDN18.2-dependent 4-1BB signaling, leading to potent immune response to the CLDN18.2-expressing tumor cells.
Timeline
Filed
03/09/2026Published
07/02/2026Granted
Not AvailableIPC Codes(3)
C07K 16/28:against receptors, cell surface antigens or cell surface determinants
A61K 39/00:Medicinal preparations containing antigens or antibodies (materials for immunoassay G01N 33/53)
A61P 35/00:Antineoplastic agents