This is a multicenter, open-label, sequential-cohort, dose-escalation, dose-expansion Phase 1 study of PRT543 in patients with advanced cancers who have exhausted available treatment options. Enrollment will take place concurrently into two distinct patient groups (one for solid tumors/lymphomas and one for hematological malignancies). The study will consist of 2 parts, a dose escalation part, and once the recommended phase 2 dose (RP2D) has been determined, a cohort expansion part involving up to ten separate cohorts. For patients, the study will include a screening phase, a treatment phase, and a post treatment follow-up phase. An end-of-study visit will be conducted within 30 days after the last dose of PRT543.
