Ignite Creation Date:
2024-05-05 @ 12:02 PM
Last Modification Date:
2024-10-26 @ 9:19 AM
Study NCT ID:
NCT00228631
Status:
COMPLETED
Last Update Posted:
2014-05-26
First Post:
2005-09-27
Brief Title:
Analysis of T-Cell Immune Reconstitution Following Allogeneic Hematopoietic BMT for Severe SCD
Sponsor:
Emory University
Organization:
Emory University
Study Overview
Official Title:
Analysis of T-Cell Immune Reconstitution Following Allogeneic Hematopoietic Stem Cell Transplantation for Severe Sickle Cell Disease ImmuneReconstSCD
Status:
COMPLETED
Status Verified Date:
2014-05
Last Known Status:
None
Delayed Posting:
No
If Stopped, Why?:
Not Stopped
Has Expanded Access:
False
If Expanded Access, NCT#:
N/A
Has Expanded Access, NCT# Status:
N/A
Acronym:
None
Brief Summary:
In this study patient blood samples from NMA transplants will be provided by Pittsburgh and samples from myeloablative transplants will be provided by Atlanta comparative controls Samples would be obtained pre- and post-BMT from the recipient at a total of 7 timepoints and from the donor at one timepoint
Detailed Description:
Sickle cell disease SCD is a serious inherited disorder of red blood cells that shortens life and causes life-long problems One of the most common genetic diseases in America SCD affects 1 of every 375 African-American live births and can be identified by routine newborn screening SCD manifests with vaso-occlusive events the most common of which is the sickle pain crisis which causes severe and unrelenting pain typically in the back chest or long bones Other types of vaso-occlusive events involve the spleen brain stoke retina bones kidney and lungs Patients are at increased risk for death due to bacterial infections damage to vital organs or aplastic crisis failure to produce any red cells and often suffer chronic organ damage
Patients with frequent and severe complications in early childhood are typically felt to be at highest risk for continued debilitating problems and early death These severely affected children have been the subject of efforts to cure SCD through bone marrow transplantation BMT from a healthy donor BMT is curative for SCD because it provides a source of normal hemoglobin production BMT is performed by giving the patient high doses of chemotherapy then infusing bone marrow from a healthy donor into a large vein in the recipient followed by an intensive period of supportive care and immune suppression Over 200 patients with SCD have been transplanted world-wide primarily from sibling donors who are HLA tissue or transplantation type matched Of those transplanted in a North American cooperative study about 95 of these patients survived the transplant and about 85 are free of sickle cell disease The Atlanta program was the largest contributor to this study Through 2004 Atlanta has transplanted 18 children with SCD from matched siblings all are free of sickle cell disease and none have died
Because conventional myeloablative BMT carries significant risks of morbidity and mortality ant thus limits its use researchers have recently been investigating less risky methods of BMT for SCD called reduced intensity or non-myeloablative NMA transplant Dr Catherine Wu of the Dana Farber Cancer Institute and Dr Laksmannan Krishnamurti of the Childrens Hospital of Pittsburgh are both performing NMA transplant for adults Wu and children Krishnamurti with severe SCD In Atlanta Haight patients continue to be offered transplant using the conventional myeloablative approach
Important questions remain about the functional and long-term status of transplanted SCD patients in a variety of areas this study will focus upon immune function Because little is know about the functional immune status of patients after non-myeloablative transplants and certainly not those who undergo transplantation for the diagnosis of sickle cell anemia patient blood samples will be analyzed for extent of immune reconstitution following transplant through immunophenotyping of various immune cell subsets molecular analysis of reconstitution of T cell neogenesis TREC analysis and T cell receptor complexity TCR Vbeta spectratyping
Patients with frequent and severe complications in early childhood are typically felt to be at highest risk for continued debilitating problems and early death These severely affected children have been the subject of efforts to cure SCD through bone marrow transplantation BMT from a healthy donor BMT is curative for SCD because it provides a source of normal hemoglobin production BMT is performed by giving the patient high doses of chemotherapy then infusing bone marrow from a healthy donor into a large vein in the recipient followed by an intensive period of supportive care and immune suppression Over 200 patients with SCD have been transplanted world-wide primarily from sibling donors who are HLA tissue or transplantation type matched Of those transplanted in a North American cooperative study about 95 of these patients survived the transplant and about 85 are free of sickle cell disease The Atlanta program was the largest contributor to this study Through 2004 Atlanta has transplanted 18 children with SCD from matched siblings all are free of sickle cell disease and none have died
Because conventional myeloablative BMT carries significant risks of morbidity and mortality ant thus limits its use researchers have recently been investigating less risky methods of BMT for SCD called reduced intensity or non-myeloablative NMA transplant Dr Catherine Wu of the Dana Farber Cancer Institute and Dr Laksmannan Krishnamurti of the Childrens Hospital of Pittsburgh are both performing NMA transplant for adults Wu and children Krishnamurti with severe SCD In Atlanta Haight patients continue to be offered transplant using the conventional myeloablative approach
Important questions remain about the functional and long-term status of transplanted SCD patients in a variety of areas this study will focus upon immune function Because little is know about the functional immune status of patients after non-myeloablative transplants and certainly not those who undergo transplantation for the diagnosis of sickle cell anemia patient blood samples will be analyzed for extent of immune reconstitution following transplant through immunophenotyping of various immune cell subsets molecular analysis of reconstitution of T cell neogenesis TREC analysis and T cell receptor complexity TCR Vbeta spectratyping
Study Oversight
Has Oversight DMC:
None
Is a FDA Regulated Drug?:
None
Is a FDA Regulated Device?:
None
Is an Unapproved Device?:
None
Is a PPSD?:
None
Is a US Export?:
None
Is an FDA AA801 Violation?:
None
Secondary IDs
| Secondary ID | Type | Domain | Link |
|---|---|---|---|
| 21821 formerly 849-2005 | OTHER | Other | None |