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Sickle Cell DiseasePhase 1NCT00152113

Haploidentical Stem Cell Transplant for Patients With Sickle Cell Disease and Prior Stroke or Abnormal Transcranial Ultrasound

A Phase 1 study testing Hematopoietic Stem Cell Transplantation, CliniMACS and See intervention description in people with Sickle Cell Disease, run by St. Jude Children's Research Hospital at 1 site in United States.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

Sickle cell disease is a life-long blood condition that can cause damage to the brain and other organs of the body. Children may develop severe, debilitating clinical states, with stroke or abnormal blood flow to the brain. Read more about this study

Who is it for?
Ages 2 to 16 years
Conditions the study is for
Sickle Cell Disease
What is being tested?
Hematopoietic Stem Cell Transplantation, CliniMACS and See intervention description
Could I receive a placebo?
No, everyone receives an active treatment
How many people
5 participants
Where
1 siteUnited States
Study dates
Apr 2005to Jan 2009
Phase
Phase 1
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 2 to 16 years
  • All sexes
  • No healthy volunteers
  • Child

Who may be able to join

  • Hemoglobin SS or S-Beta Thalassemia Sickle Cell Disease.
  • Partially-matched family member with hemoglobin AA (normal) or hemoglobin AS (sickle trait) phenotype.
  • Stroke (persistent neurologic deficit lasting > 24 hours and present on MRI) or abnormal transcranial Doppler (TCD) ultrasonography requiring chronic transfusion therapy. A TCD is deemed abnormal when the velocity is greater than or equal to 200 cm/sec. Chronic transfusion therapy is defined as "packed red blood cell transfusions administered approximately every 3-5 weeks to decrease the percentage of sickle hemoglobin (Hemoglobin S) to prevent complications of sickle cell disease. This is used most commonly to treat/prevent stroke, acute chest syndrome, and/or pain crises.

Who cannot join

  • Karnofsky or Lansky score < 60%
  • Acute hepatitis or evidence of moderate or severe portal fibrosis on biopsy. (Biopsy will be obtained if patient on chronic transfusion therapy > 6 months or ferritin > 1000 ng/ml) International normalized ratio (INR) less than 2 times normal. ALT and AST less than 3 times the upper limit of normal.
  • Severe renal impairment (as evidenced by GFR < 30% predicted normal)
  • Ejection fraction or shortening fraction below lower limit of normal for age.
  • Pregnancy
  • Lactating and pregnant females are excluded
  • Positive HLA crossmatch with donor.
  • No sickle cell chronic lung disease > Stage 2

Trial locations and contacts

1 site in 1 country.

United States1 site
  • St. Jude Children's Research Hospital

    Memphis, Tennessee, 38105

Other trials in United States

About this study

Official title: Hematopoietic Stem Cell Transplantation for Patients With Sickle Cell Disease and Prior Stroke or Abnormal Transcranial Doppler Ultrasound Using Reduced-Intensity Conditioning and T-Cell Depleted HSC From Partially Matched Family Donors

Sickle cell disease is a life-long blood condition that can cause damage to the brain and other organs of the body. Children may develop severe, debilitating clinical states, with stroke or abnormal blood flow to the brain. Treatment generally includes chronic blood transfusions which may cause iron overload, potentially leading to severe and sometimes fatal complications.

Hematopoietic stem cell transplant using cells obtained from a sibling or an unrelated volunteer donor who is a perfect HLA "match" (same tissue type) for the recipient has shown to help, and possibly cure, sickle cell disease. Unfortunately, only about 10-20% of sickle cell patients have a HLA matched sibling donor, and the likelihood of locating an appropriate HLA matched unrelated donor through the various donor registries is limited.

Read more

Stem cells from partially HLA matched family members (also called haploidentical transplant) is an option currently being explored for this patient population. This type of transplant has been used and found to be successful in some patients, mostly those with cancers of the blood. However, there can be significant complications with haploidentical transplant, primarily infection, failure of the graft to grow (graft failure), and a disorder called graft-versus-host disease. In addition, few patients with sickle cell disease have undergone this procedure. Therefore, the risks and benefits of haploidentical transplants for patients with sickle cell disorder are not as well established as those using an HLA identical sibling or unrelated donor.

The primary objective of this study is to assess the safety of haploidentical stem cell transplantation for children and adolescents with severe sickle cell disease and stroke or abnormal transcranial Doppler ultrasound requiring chronic transfusion therapy. The treatment plan will be considered safe if there is not excessive toxicity. Toxicity for this protocol is defined as graft failure/graft rejection, severe acute GVHD, or regimen related death within 100 days after the last cellular product administered.

Of note, the protocol was closed to accrual in September 2007 as we had met the stopping rules related to graft integrity (graft failure and graft rejection). Participants currently enrolled continue to be followed per protocol.

Read the detailed description

Secondary objectives for this protocol include the following:

  • To estimate 1-year overall and event free survival after transplantation. An event is defined as toxicity (graft failure, death, grade III/IV acute GHVD), or a sickle-related event (stroke, acute chest syndrome, pain crisis).
  • To obtain preliminary information regarding donor engraftment among different cell subsets, including unsorted mononuclear cell, and lymphoid fractions during the first year after transplant.
  • To observe the rate of acute and chronic GVHD during the first year after transplant.
  • To assess the proportion of research participants who experience poor graft integrity and therefore require additional donor stem cells or lymphocytes.
  • To document the effect of stem cell transplant on the central nervous system as defined by radiological imaging and neuropsychological testing.
  • To investigate immune reconstitution after transplantation
Being tested
Hematopoietic Stem Cell Transplantation, CliniMACS, See intervention description
Keywords
Sickle Cell Anemia, Stem Cell Transplantation, Haploidentical stem cell transplant, T cell depletion, CliniMACS device
Medical subject headings
Anemia, Sickle Cell

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Hematopoietic Stem Cell TransplantationProcedure or surgery

    Allogeneic stem cell transplant Haploidentical stem cell transplant Mismatched family member donor stem cell transplant T cell selection CD34 enrichment

  • CliniMACSDevice

  • See intervention descriptionDrug

    Hydroxyurea and azathioprine were administered for a 3 month period prior to the initiation of the transplant procedure in an effort to help prevent rejection of the donor product. Approximately 10 days prior to the transplant procedure, all participants received the same preparative regimen consisting of Busulfan, cyclophosphamide, low-dose thiotepa, and OKT3. MMF was administered for GVHD prophylaxis. Two separate infusions of donor stem cells were administered with fixed doses of CD3 and CD34 cells. These haploidentical stem cells were processed using the investigational CliniMACS device.

Study groups in NCT00152113
Study groupRoleWhat they receive
1OtherNot described
Receives: Procedure: Hematopoietic Stem Cell Transplantation; Device: CliniMACS; Drug: See intervention description

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. To assess the safety of haploidentical stem cell transplantation for children and adolescents with severe sickle cell disease and stroke or abnormal transcranial Doppler ultrasound requiring chronic transfusion therapy.

    Measured: September 2007

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted9 Sep 2005 (estimated)
  2. Study startApr 2005
  3. Primary completionDec 2008
  4. Study completionJan 2009

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 1
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrolment
5 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT00152113
Sponsor's protocol ID
SCDHAP
Status last verified
Feb 2009
First submitted
7 Sep 2005
Last updated
26 Apr 2017
Results posted
No
Data monitoring committee
No

Publications

  • Dallas MH, Triplett B, Shook DR, Hartford C, Srinivasan A, Laver J, Ware R, Leung W. Long-term outcome and evaluation of organ function in pediatric patients undergoing haploidentical and matched related hematopoietic cell transplantation for sickle cell disease. Biol Blood Marrow Transplant. 2013 May;19(5):820-30. doi: 10.1016/j.bbmt.2013.02.010. Epub 2013 Feb 14.

    PubMed 23416852

Questions about this trial

What is this clinical trial studying?

A Phase 1 study testing Hematopoietic Stem Cell Transplantation, CliniMACS and See intervention description in people with Sickle Cell Disease, run by St. Jude Children's Research Hospital at 1 site in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 3 inclusion and 8 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 26 Apr 2017. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

To assess the safety of haploidentical stem cell transplantation for children and adolescents with severe sickle cell disease and stroke or abnormal transcranial Doppler ultrasound requiring chronic transfusion therapy. (time frame: September 2007). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT00152113, which also lists 1 linked publication.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 26 Apr 2017; AzTrials last refreshed its copy on 6 Nov 2026.

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