Early functional reactivity to a CEACAM5 x CD3 T cell bispecific antibody in solid tumors associates with baseline immune contexture rather than target antigen density alone
Clinical translation of T cell bispecific (TCB) therapies in solid tumors is hindered by the immunosuppressive tumor microenvironment and intratumoral heterogeneity, features poorly captured by standard preclinical models. We applied an integrated translational framework, combining humanized mouse models, a patient-d...