AstraZeneca's CAPItello-281 phase 3 trial showed significant improvements in radiographic progression-free survival (rPFS) with Truqap (capivasertib) combined with Zytiga (abiraterone) and ADT in PTEN-deficient de novo metastatic hormone-sensitive prostate cancer patients, compared to Zytiga and ADT alone. The trial, involving over 1,000 patients, marks the first AKT inhibitor combination to demonstrate benefit in this specific form of prostate cancer, with ongoing assessment for overall survival.