A Study of BH-30236 in Relapsed/ Refractory Acute Myelogenous Leukemia and Higher Risk Myelodysplastic Syndrome

Inclusion criteria: * ≥18 years. * Diagnosis of relapsed/refractory acute myelogenous leukemia (R/R) AML or higher-risk myelodysplastic syndrome (HR-MDS) with ≥5% bone marrow blast at time of inclusion. * Prior treatment history must include 1-5 prior lines of therapy. * ECOG performance status ≤2. * Adequate organ function evidenced by the following laboratory values: * Hepatic: Transaminase levels aspartate aminotransferase \[AST\]/ alanine transaminase \[ALT\] ≤ 2.5 × upper limit of normal (ULN). In cases of liver involvement by AML or MDS, AST and ALT \< 5.0 × ULN is acceptable. Total bilirubin ≤ 1.5 × ULN in the absence of documented Gilbert's disease. * Renal: Measured or calculated creatinine clearance ≥ 60 mL/min (Cockcroft-Gault formula) The above are a summary, other inclusion criteria details may apply. Exclusion Criteria: * Diagnosis of acute promyelocytic leukemia or chronic myeloid leukemia with blast crisis. * Prior allogeneic HSCT within 3 months or donor lymphocyte infusion within 30 days of start of therapy; * Active and uncontrolled infections. * Unresolved AEs greater than Grade from prior therapies. * History of other active malignancy (with certain exceptions) * Prior treatment with a CLK inhibitor. * Any acute or chronic graft versus host disease requiring systemic therapy within 4 weeks prior to study drug administration with the exception of topical steroids or the equivalent of 20 mg of prednisone or less. The above is a summary, other exclusion criteria details may apply.