PRT1419 as Monotherapy or in Combination With Azacitidine or Venetoclax in R/R Myeloid or B-cell Malignancies

This is a multicenter, open-label, dose-escalation, Phase 1 study of PRT1419, a MCL-1 inhibitor, evaluating participants with acute myeloid leukemia (AML), chronic myelomonocytic leukemia (CMML), myelodysplastic syndrome (MDS), MDS/myeloproliferative neoplasm (MPN) overlap syndrome, chronic lymphocytic leukemia (CLL) or small lymphocytic lymphoma (SLL), and B-cell non-hodgkin lymphoma (NHL) including marginal zone lymphoma, follicular lymphoma or mantle cell lymphoma. Participants in study will receive PRT1419 as monotherapy or in combination with either Azacitidine (AZA) or Venetoclax (VEN). The study includes multiple dose escalations and expansion cohorts for RP2D confirmation.