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Allograft for Sickle Cell Disease and Thalassemia

NCT02038478 · Status: WITHDRAWN · Phase: PHASE2 · Type: INTERVENTIONAL

Last updated 2021-07-29

No results posted yet for this study

Summary

The design of the study incorporates the following features:

1. This is a phase II study to determine the safety and therapeutic potential of a new transplant approach (disease-free survival, graft versus myeloma effect) and to evaluate its toxicity profile (immediate toxicity, graft-versus-host disease, graft rejection, mortality) in a patient population with severe congenital anemias.
2. The patient cohort to be studied: Those patients with severe sickle cell disease and thalassemia who have risk factors for high mortality and morbidity related to their disease
3. Transplant Conditioning Regimen - Immunosuppression without myeloablation: Patients will receive conditioning sufficient to allow donor lympho-hematopoietic engraftment without complete marrow ablation. If the graft is rejected, the patient will reconstitute autologous marrow function. We will use a combination of low dose irradiation, Alemtuzumab (Campath®), and sirolimus.
4. Peripheral blood hematopoietic progenitor cell (PBPC) transplant: An unmanipulated peripheral blood stem cell collection from a filgrastim (G-CSF) stimulated HLA-matched donor should improve the chance of engraftment because of the high stem cell dose (5 x 106/kg CD34+ cells) and the presence of donor lymphocytes. To reduce the risk of GVHD, patients will receive sirolimus before and after the transplant. The sirolimus will be tapered as necessary to minimize any graft versus host disease while still maintaining adequate chimerism.

Conditions

  • Sickle Cell Disease and Thalassemia

Interventions

BIOLOGICAL

Donor Stem Cell Transplantation

One day after they complete their radiation and Campath-1H treatments and have begun their Sirolimus, the donor blood stem cells described above are transfused through the central line. This process takes approximately 30 minutes to 2 hours and is normally completely without side effects.

Sponsors & Collaborators

  • University of Texas Southwestern Medical Center

    lead OTHER

Principal Investigators

  • Prapti Patel, MD · UT Southwestern Medical Center

Study Design

Allocation
NA
Purpose
TREATMENT
Masking
NONE
Model
SINGLE_GROUP

Eligibility

Min Age
18 Years
Max Age
45 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2014-01-31
Primary Completion
2021-01-31
Completion
2021-05-31

Countries

  • United States

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT02038478 on ClinicalTrials.gov