T Cells in Predicting Acute Graft-Versus-Host Disease in Patients Undergoing Donor Stem Cell Transplant
RATIONALE: Studying samples of blood from patients with cancer in the laboratory may help doctors predict whether patients undergoing donor stem cell transplant will develop acute graft-versus-host disease.
PURPOSE: This clinical trial is studying T cells to see how well they help in predicting acute graft-versus-host disease in patients undergoing donor stem cell transplant.
Chronic Myeloproliferative Disorders
Gestational Trophoblastic Tumor
Multiple Myeloma and Plasma Cell Neoplasm
Testicular Germ Cell Tumor
Other: flow cytometry
Other: laboratory biomarker analysis
Other: Data Collection
|Study Design:||Observational Model: Cohort
Time Perspective: Prospective
|Official Title:||Regulatory T Cells at Engraftment as Predictors of Acute Graft-Versus-Host Disease Outcomes in Patients Undergoing Allogeneic Stem Cell Transplantation|
- Percentage of regulatory T-lymphocytes (Tregs) at engraftment [ Time Frame: day of stem cell transplant ]percentage of Treg subsets present in patient's blood before they undergo stem cell transplant
- Association between Treg subsets and acute graft-vs.-host disease outcomes [ Time Frame: at stem cell transplant and at day 28 ]Identify gut homing and skin homing Treg lymphocyte subsets and compare and contrast them to determine links between the Treg subsets and gut and/or skin acute graft-vs.-host-disease incidence, stage/grade, target organ involvement, and responsiveness to therapy.
Biospecimen Retention: Samples With DNA
|Study Start Date:||December 2006|
|Estimated Study Completion Date:||December 2018|
|Estimated Primary Completion Date:||October 2018 (Final data collection date for primary outcome measure)|
Allogeneic Stem Cell Transplant Patients
Patients undergoing allogeneic stem cell transplant (SCT). Potential study candidates will be identified by participating physicians.
Other: flow cytometry
Lymphocyte Analysis: Lymphocyte subset studies will be performed on samples obtained from the patient, donor, or graft. Aliquots will be analyzed using standard flow cytometry.Other: laboratory biomarker analysis
Identification of gut-homing and skin-homing Treg subsetsOther: Data Collection
Patient samples will receive an alphanumeric code assigned by the principal investigator so that patient and donor identity will be known only to study investigators and research staff. Clinical records on each patient will be reviewed by participating investigators or research staff on a routine basis so that relevant clinical information including survival, malignancy relapse, and GVHD can be included in the patient database. Flow cytometry results will also be included in this database.
- To determine the association between regulatory T-lymphocyte (Treg) subsets present at engraftment and at day 28 with the incidence of acute graft-versus-host-disease (aGVHD) in patients undergoing allogeneic stem cell transplantation.
- To identify gut-homing and skin-homing Treg subsets and determine their role during engraftment and at day 28 as a predictor of gut and skin aGVHD, respectively.
OUTLINE: Patients undergo blood sample collection at the time of neutrophil engraftment prior to stem cell transplant (SCT) and post-SCT on days 7, 14, 21, and 28 days after allogeneic stem cell transplantation. Blood samples are analyzed for T-cell subsets and for the percentage of regulatory T-lymphocyte (Treg) or other T-cell subsets expressing specific homing receptors for the gut or skin via flow cytometry.
Patients' medical records are also reviewed periodically.
Please refer to this study by its ClinicalTrials.gov identifier: NCT00651716
|United States, Tennessee|
|Vanderbilt-Ingram Cancer Center|
|Nashville, Tennessee, United States, 37232-6838|
|Study Chair:||Brian Engelhardt, MD||Vanderbilt-Ingram Cancer Center|