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Ribas and colleagues report that inhibition of PAK4 improves response to anti-PD-1 immunotherapy by reducing Wnt pathway activation and increasing tumor infiltration by T cells.
Martínez-Jiménez et al. report how disruption of the ubiquitin–proteasome system affects cancer, estimating that >10% of driver mutations involve alterations in genes relevant in ubiquitin-mediated proteolysis, including E3 ligases and their targets.
Wu et al. develop trispecific antibodies that recognize CD38, CD3 and CD28 and induce T cell activation and co-signaling. They show in mice and non-human primates that by engaging multiple targets, these antibodies induce enhanced tumor-cell killing.