HM2023-05: GTB-3650 (Anti-CD16/IL-15/Anti-CD33) Tri-Specific Killer Engager (TriKE®) for the Treatment of High Risk Myelodysplastic Syndromes (MDS) and Refractory/Relapsed Acute Myeloid Leukemia (AML)

Summary

This is a Phase I dose finding study of GTB-3650 (anti-CD16/IL-15/anti-CD33) Tri-Specific Killer Engager (TriKE®) for the treatment of select CD33-expressing refractory/relapsed myeloid malignancies in adults ≥ 18 years of age who are not a candidate for potentially curative therapy, including hematopoietic stem cell transplantation, and are refractory to, intolerant of, or ineligible for therapy options that are known to provide clinical benefit. The hypothesis is GTB-3650 TriKE will induce natural killer (NK) cell function by targeting malignant cells, as well as, CD33+ myeloid derived suppressor cells (MDSC) which contribute to a tumor induced immunosuppression. Because CD16 is the most potent activating receptor on NK cells, this single agent may induce a targeted antiCD33+ tumor response

Eligibility

Age range

18+ years

Sex

All

Healthy volunteers

No

Interventions

• Drug
  GTB-360

  GTB-3650 is administered by a continuous infusion (CI). A patient's dose of GTB-3650 is calculated using their assigned Dose Level and their actual body weight (ABW) obtained within 5 days prior to or on Cycle 1, Day 1. Dose Level 1: 1.25 ug/kg/day Dose Level 2: 2.5 ug/kg/day Dose Level 3: 5 ug/kg/day Dose Level 4: 10 ug/kg/day Dose Level 5: 25 ug/kg/day Dose Level 6: 50 ug/kg/day Dose Level 7: 100 ug/kg/day

Location