Phase I Study of Cell Therapies for the Treatment of Patients With Relapsed or Refractory AML or High-risk MDS

Acute Myeloid Leukemia Clinical Trial

Official title: Master Protocol for the Phase 1 Study of Cell Therapies for the Treatment of Patients With Relapsed or Refractory Acute Myeloid Leukemia or High-risk Myelodysplastic Syndrome, Including Long-term Safety Follow-up

Status Recruiting

Clinical Trial Summary

The purpose of this study is to evaluate the safety and preliminary activity of ARC-T cells and SPRX002 in participants with relapsed or refractory acute myeloid leukemia (AML) or high-risk myelodysplastic syndrome (MDS)

Clinical Trial Description

This is a Phase I open-label, safety, and dose-escalation study of ARC-T cells and SPRX002 in participants with relapsed or refractory AML or high-risk MDS. The study will have the following sequential phases: screening, enrollment, pretreatment with lymphodepletion (LD) chemotherapy, treatment with SPRX002 and ARCT cells, treatment extension with SPRX002, follow up, and long-term safety follow-up. Following a single infusion of SPRX002 and ARC T (Day 0) and followed by regular administration of SPRX002 at the assigned dose level, both safety and efficacy data will be assessed. Dose limiting toxicities (DLTs) will be assessed through Day 28 and safety data will be collected throughout the study. Long-term safety data will be collected for up to 15 years per health authority guidelines. Efficacy will be assessed monthly for the first 6 months, then quarterly up to 2 years, or upon subject relapse. ARC-T cells are a genetically modified autologous T-cell product. The T cell has been transduced using a third-generation lentiviral vector encoding a binding domain (referred to as AF101) chimeric antigen receptor (CAR), followed by CD8 spacer and transmembrane region that is fused to the intracellular signaling domains 4-1BB and CD3ζ. AF101 specifically binds to the "TAG" protein (referred to as Q26) of the soluble protein antigen-receptor x-linker (sparX; specifically, SPRX002). ;

Related Conditions & MeSH terms

• Acute Myeloid Leukemia
• Leukemia
• Leukemia, Myeloid
• Leukemia, Myeloid, Acute
• Myelodysplastic Syndromes
• Preleukemia

• NCT number: NCT05457010
• Study type: Interventional
• Source: Arcellx, Inc.
• Contact: Clinical Information
• Phone: 240-327-0379
• Email: clinical@arcellx.com
• Status: Recruiting
• Phase: Phase 1
• Start date: November 28, 2022
• Completion date: November 17, 2025