At #AACR26 Poster 6457.CD137 agonist. Exciting responses in breast cancer and high spec pharmacodynamic imaging showing decreasing metabolism (FDG-PET) but increasing lymphocytic infiltration (CD8 PET). @icr.ac.uk @royalmarsden.org @crukconvergence.bsky.social @ecmc-uk.bsky.social @nihr.bsky.social