A Phase 1, Open-label, Preliminary Pharmacokinetics (PK) and Safety Study of CLN-049 (An Fms-like Tyrosine Kinase 3 [FLT3] x Cluster of Differentiation 3 [CD3] Bispecific T Cell Engager) in Patients With Relapsed/Refractory Acute Myeloid Leukemia (AML) or Myelodysplastic Syndrome (MDS)

This trial is divided into 3 parts: Part A - Single Ascending Dose (SAD) - Patients will receive a single dose of CLN-049 via IV administration and be followed for safety for 28 days Part B - Multiple Ascending Dose (MAD) - Patients will received CLN-049 every 7 days (q7d) after an initial Lead-In Dose via IV administration and be followed for safety for 28 days and will then enter long-term follow-up for up to 2 years Part C - Multiple Ascending Dose (MAD) - Patients will receive CLN-049 q7d via SC injection and be followed for safety for 28 days and will then enter long-term follow-up for…