Induction of Stable Chimerism for Sickle Cell Anemia

Hematopoietic Stem Cell Transplantation Clinical Trial

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT00029393
• Other study ID #: 142
• Secondary ID: U01HL068091
• Status: Completed
• Phase: Phase 2
• First received: January 10, 2002
• Last updated: July 28, 2016
• Start date: August 2001
• Est. completion date: July 2007

Study information

• Verified date: January 2008
• Source: National Heart, Lung, and Blood Institute (NHLBI)
• Contact: n/a
• Is FDA regulated: No
• Health authority: United States: Federal Government
• Study type: Interventional

Clinical Trial Summary

To investigate a modified hematopoeitic cell transplantation (HCT) procedure for sickle cell disease that significantly reduces the toxicity of HCT, yet retains its therapeutic benefit.

Description:

BACKGROUND:

Hematopoietic cell transplantation (HCT) has curative potential for individuals with sickle cell disease. While the results of conventional HCT have been good, this treatment carries risks of significant short- term and longterm toxicities. For this reason, HCT has been reserved for children who have experienced severe symptoms that predict a poor outcome. Of interest, some patients developed stable donor-host hematopoietic chimerism after conventional HCT. Due to a natural enrichment of donor erythrocytes in the blood, those who developed stable chimerism had a significant clinical benefit, even when there was a minority of donor cells. These observations have paralleled efforts to develop less-toxic, non-myeloablative preparative regiments for transplantation, proved first in a canine model of transplantation, and subsequently translated successfully in a clinical trial for older adults with hematological malignancies.

DESIGN NARRATIVE:

Multicenter open-label phase I-II study in 30 children with sickle cell disease that combines a non-myeloablative pre-transplant hematopoietic cell transplantation (HCT) therapy with modulated post-grafting immunosuppression to control host-versus-graft and graft-versus-host reactions. The approach relies on the ability to establish and maintain donor-host chimerism. The primary study endpoint is stable donor cell engraftment; secondary endpoints measure the impact of therapy on sickle cell-related symptoms and end-organ damage (disease-free survival, patient survival, graft-versus-host disease, complications etc). The trial will be conducted within the existing network of Comprehensive Sickle Cell Centers, and will be centrally coordinated by the Sickle Cell Coordinating Center.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 0
• Est. completion date: July 2007
• Est. primary completion date: July 2007
• Accepts healthy volunteers: No
• Gender: Both
• Age group: N/A to 100 Years
• Eligibility: No eligibility criteria

Study Design

Masking: Open Label, Primary Purpose: Treatment

Related Conditions & MeSH terms

• Anemia
• Anemia, Sickle Cell
• Blood Disease
• Hematologic Diseases
• Hematopoietic Stem Cell Transplantation

Intervention

Procedure:
• Hematopoietic Stem Cell Transplantation

Drug:
• Immunosuppression

Locations

Country	Name	City	State
n/a

Sponsors (1)

Lead Sponsor	Collaborator
National Heart, Lung, and Blood Institute (NHLBI)

References & Publications (4)

Atkins RC, Walters MC. Haematopoietic cell transplantation in the treatment of sickle cell disease. Expert Opin Biol Ther. 2003 Dec;3(8):1215-24. Review. — View Citation

Horan JT, Liesveld JL, Fenton P, Blumberg N, Walters MC. Hematopoietic stem cell transplantation for multiply transfused patients with sickle cell disease and thalassemia after low-dose total body irradiation, fludarabine, and rabbit anti-thymocyte globulin. Bone Marrow Transplant. 2005 Jan;35(2):171-7. — View Citation

Iannone R, Casella JF, Fuchs EJ, Chen AR, Jones RJ, Woolfrey A, Amylon M, Sullivan KM, Storb RF, Walters MC. Results of minimally toxic nonmyeloablative transplantation in patients with sickle cell anemia and beta-thalassemia. Biol Blood Marrow Transplant. 2003 Aug;9(8):519-28. — View Citation

Walters MC, Patience M, Leisenring W, Rogers ZR, Aquino VM, Buchanan GR, Roberts IA, Yeager AM, Hsu L, Adamkiewicz T, Kurtzberg J, Vichinsky E, Storer B, Storb R, Sullivan KM; Multicenter Investigation of Bone Marrow Transplantation for Sickle Cell Disease. Stable mixed hematopoietic chimerism after bone marrow transplantation for sickle cell anemia. Biol Blood Marrow Transplant. 2001;7(12):665-73. — View Citation