AZD3470 as Monotherapy or in Combination With Anticancer Agent(s) in Participants With Haematologic Malignancies.

This is a modular, Phase I/II, open-label, multicentre study of AZD3470 in participants with haematologic malignancies. The study consists of several study modules, each evaluating the safety, tolerability, PK, pharmacodynamics, and preliminary efficacy of orally administered AZD3470 as a monotherapy and in combination with other anticancer agent(s). Module 1 Cohort 1 will evaluate AZD3470 monotherapy in adults and adolescents with r/r cHL who have received at least 2 prior lines of anticancer therapy. Part A (dose escalation) will assess AZD3470 at increasing doses to determine Maximum Tolerated Dose and Recommended Dose for Expansion in participants aged 18 years or older. Part B (dose optimization/expansion) will include participants to selected dose levels that were evaluated in Part A to support the recommended phase II dose (RP2D). Safety, tolerability, PK, preliminary efficacy, and food effect will be assessed. Adolescent participants (aged 12 years and older) will only be enrolled in Part B once sufficient supportive adult safety/PK data is reviewed and agreed upon with Safety Review Committee. Module 1 Cohort 2 will evaluate AZD3470 monotherapy as a consolidation therapy in advanced stage (Stage III/IV) cHL participants aged 50 years or older, who have achieved a response (CR or PR) after at least 4 cycles of frontline standard of care therapy. Safety and tolerability, PK, Pharmacodynamics and preliminary efficacy will be evaluated. Module 1 Cohort 3 will evaluate AZD3470 monotherapy in participants with r/r PTCL (PTCL NOS, ALCL, AITL) aged 18 years or older, who have received at least one prior anticancer therapy. Safety and tolerability, PK, Pharmacodynamics, and preliminary efficacy will be evaluated. Module 2 Cohort 1 will evaluate AZD3470 in combination with pembrolizumab in r/r cHL participants aged 18 years or older, who have received at least one prior anticancer therapy. Part A (dose escalation) will include participants at select dose levels below or at the highest tolerable monotherapy dose in Module 1 Cohort 1. Part B (dose optimization/expansion) will include participants to selected dose levels that were evaluated in Part A to support the recommended combination phase II dose (RP2D). Safety, tolerability, PK, Pharmacodynamics and preliminary efficacy, will be evaluated. The protocol may be amended in the future to incorporate additional cohorts in combination with pembrolizumab or new modules evaluating AZD3470 in combination with other anticancer agents in haematologic malignancies.