Five Prime initiates dosing in phase 1 clinical trial of FPT155
Five Prime Therapeutics announced it initiated patient dosing in a Phase 1 clinical trial of FPT155, a first-in-class CD80 fusion protein. The trial was initiated in Australia. The Phase 1a/1b open-label, multicenter, dose escalation, dose exploration and dose expansion study will evaluate the safety and tolerability of FPT155 in patients with advanced solid tumors. The Phase 1a dose escalation portion of the trial will characterize the safety and pharmacokinetic / pharmacodynamic profile of FPT155 and will identify a recommended dose for the Phase 1b portion of the trial. During the dose escalation, Five Prime will also open an exploratory cohort to investigate FPT155 monotherapy in select tumor types with high unmet need. The Phase 1b portion of the trial is intended to further characterize the safety, PK/PD profile, and preliminary efficacy of FPT155.