US Phase I Study of ECT-001-CB in Patients With Sickle-Cell Disease

Status Withdrawn

Clinical Trial Summary

The application of experimental hematopoietic cell transplantation (HCT) therapy in sickle-cell disease (SCD) must strike a balance between the underlying disease severity and the possibility of a direct benefit of the treatment, particularly in pediatric populations. Clinical studies in adults with SCD have focused on interventions that prolong survival and improve the quality of life. Unlike children, adults with SCD are much more likely to have a debilitating complication. As a result, the risk/benefit ratio of HCT is very favorable in adults, particularly if an approach to HCT that defines an acceptable level of toxicity can be established. Whereas hematopoietic stem cell transplantation (HSCT) remains the only curative treatment currently available for patients with SCD, the morbidity, the frequent irreversible damage in target organs and the mortality reported in the natural course of patients with severe SCD are strong incentives to perform HSCTs in younger age groups. For those who lack a matched related donor, CB transplant is an appealing option, but despite been less problematic, CB accessibility related to cell dose of appropriately matched cord blood unit (CBU) remains a significant issue. Through a 7-day culture process of a CBU's hematopoietic stem cell HSCs with the UM171 compound, the total cell dose is increased mitigating this limitation. UM171-CB expansion (ECT-001-CB) allows a greater CB accessibility, the selection of better matched cords that might translate into favourable clinical outcomes as reported in previous trials, including a lower risk of graft-versus-host disease. After CB selection and ex-vivo expansion, ECT-001-CB transplant will follow a myeloablative reduced-toxicity conditioning regimen consisting of rATG, busulfan and fludarabine with doses of all agents optimized to the individual using model-based dosing and will be followed by standard supportive care and GVHD prophylaxis consisting of tacrolimus and MMF.

Clinical Trial Description

n/a

Study Design

Related Conditions & MeSH terms

Clinical Trial Details

NCT number	NCT04594031
Study type	Interventional
Source	ExCellThera inc.
Contact
Status	Withdrawn
Phase	Phase 1
Start date	July 13, 2021
Completion date	February 2, 2024

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See also
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Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.

Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.