Haploidentical Hematopoietic Stem Cell Transplantation Patients With Wiskott-Aldrich Syndrome

Wiskott-Aldrich Syndrome Clinical Trial

Official title:

Haploidentical Hematopoietic Stem Cell Transplantation for Pediatric Patients With Wiskott-Aldrich Syndrome: A Pilot Study

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT00160355
• Other study ID #: WASHAP
• Status: Completed
• Phase: Phase 1
• First received: September 8, 2005
• Last updated: April 24, 2017
• Start date: May 2005
• Est. completion date: February 2009

Study information

• Verified date: February 2009
• Source: St. Jude Children's Research Hospital
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

Wiskott - Aldrich syndrome (WAS) is a rare disorder curable only through allogeneic hematopoietic stem cell transplantation. A mismatched family member is an option when no human leukocyte antigen (HLA-immune system type) matched related or matched unrelated donor is available.

This study will evaluate a novel therapeutic strategy for patients with WAS who undergo haploidentical transplantation using a parental donor. To reduce the risk of transplant-related toxicities, participants will receive a reduced intensity chemotherapy and antibody regimen (conditioning treatment). Participants will then receive an infusion of donor stem cells depleted of certain white blood cells called T- and B-lymphocytes. The stem cell depletion processing will be done through the use of the investigational CliniMACS device. A certain number of T-lymphocytes will be added back to the processed stem cell graft prior to infusion into the recipient.

The primary objective of this study is to determine the safety of haploidentical transplantation in WAS patients using this specified conditioning regimen and engineered graft. Safety will be defined in terms of engraftment (meaning how well the graft grows and functions after infusion) and regimen-related toxicity within the first 100 days after transplant.

Description:

Secondary Objectives in this trial include the following:

• To estimate the survival of study recipients at one year after infusion of the T- and B-lymphocyte depleted stem cell graft.

• To assess if the study treatment enables the recipient to generate normal donor-derived B-cell numbers and endogenous IgM, IgG, and IgA production, resulting in a reduction/elimination of the need for intravenous immunoglobulin infusions.

• To determine if the study treatment results in the ability of the research participant to generate normal donor-derived T cell response and natural killer (NK) cell numbers and function.

• To describe the incidence of Epstein-Barr virus-lymphoproliferative disease (EBV-LPD) in these transplant recipients.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 4
• Est. completion date: February 2009
• Est. primary completion date: July 2008
• Accepts healthy volunteers: No
• Gender: Male
• Age group: N/A to 18 Years

Eligibility

Inclusion Criteria:

• Genotypical diagnosis of Wiskott-Aldrich Syndrome.

• Less than 18 years of age at time of transplant.

Must meet two of the eight following clinical criteria:

• Eczema that is refractory to standard therapy.

• Thrombocytopenia as defined by a platelet count < 50,000/mm3.

• Significant risk for or presence of opportunistic infection.

• Autoimmune disease.

• Malignancy or pre-malignant condition.

• Family history as defined as a family member with WAS who died before 10 years of age.

• Does not have a suitable, available 6/6 HLA-matched sibling donor available for donation.

• Does not have a suitable, available 10/10 HLA-allele matched unrelated donor identified through the National Marrow Donor Program (NMDP).

Exclusion Criteria:

If any of the following clinical indicators are met within 45 days prior to transplant, the research participant will not be eligible for the study:

• Symptomatic cardiac disease or evidence of significant cardiac dysfunction by echocardiogram (shortening fraction < 30%).

• Creatinine clearance or Tc 99 less than or equal 40ml/min/1.73 m2.

• SGPT greater than or equal 500 U/L.

• Karnofsky or Lansky Performance Score of < 50.

• Pulmonary function tests: FVC < 50% of predicted value if age appropriate to perform the testing adequately or an O2 saturation less than or equal to 92% on room air at rest.

Related Conditions & MeSH terms

• Syndrome
• Wiskott-Aldrich Syndrome

Intervention

Procedure:
• Hematopoietic stem cell transplantation
To determine the safety in regards to engraftment and toxicity within 100 days of infusing a haploidentical T- and B-cell depleted hematopoietic stem cell graft into patients with Wiskott-Aldrich syndrome who have received a reduced intensity conditioning regimen.

Device:
• Miltenyi CliniMACS selection system
This system depletes the hematopoietic stem cell graft of T and B lymphocytes.

Drug:
• Fludarabine, Melphalan, Thiotepa
Participants will receive a reduced intensity conditioning regimen consisting of Fludarabine, Melphalan, Thiotepa, and OKT3 prior to receipt of the haploidentical stem cell graft. Rituximab will be given in an effort to prevent PTLPD. In addition to T-cell depletion of the donor product, cyclosporine will be given for GVHD prophylaxis.

Locations

Country	Name	City	State
United States	St. Jude Children's Research Hospital	Memphis	Tennessee

Sponsors (1)

Lead Sponsor	Collaborator
St. Jude Children's Research Hospital

Country where clinical trial is conducted

United States, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	To determine safety in regards to engraftment and toxicity within 100 days post-haploidentical T- and B-cell depleted hematopoietic stem cell transplantation for patients with Wiskott-Aldrich syndrome who received a reduced intensity conditioning		March 2010

External Links

•   St. Jude Children's Research Hospital