T-Regulatory Cell Kinetics, Stem Cell Transplantation, REGKINE
REGKINE
T-Regulatory Cell Kinetics Post Transplant For Patients Undergoing Matched Sibling Stem Cell Transplantation
1 other identifier
interventional
26
1 country
1
Brief Summary
Patients are being asked to participate in this study because they have a cancer in their blood (such as leukemia or lymphoma) or myelodysplastic/myeloproliferative (pre-leukemia). We suggest a treatment that might help them live longer without disease than other treatment plans would. This treatment is known as a stem cell transplant. We believe this may help the patient as it allows us to give much stronger doses of drugs and radiation to kill the diseased cells than we could give without the transplant. We also think that the healthy cells may help fight any diseased cells left after the transplant. Stem Cells are special "mother" cells that are found in the bone marrow (the spongy tissue inside bones), although some are also found in the bloodstream (peripheral blood). As they grow, they become either white blood cells which fight infection, red blood cells which carry oxygen and remove waste products from the organs and tissues or platelets, which enable the blood to clot. For the transplant to take place, we will collect these stem cells from a "donor" (a person who agrees to donate these cells) and give them to the patient. The patient has a type of blood cell cancer or other blood problem that is very hard to cure with standard treatments and they will receive a stem cell transplant (SCT). If they have a brother or sister that is a perfect match and agrees to donate, the stem cells will come from him/her. Before the transplant, two very strong drugs plus total body irradiation will be given to the patient (pre-conditioning). This treatment will kill most of the blood-forming cells in the bone marrow. We will then give the patient the healthy stem cells. Once these healthy stem cells are in the bloodstream they will move to the bone marrow (graft) and begin producing blood cells that will eventually mature into healthy red blood cells, white blood cells and platelets. Also, we will ask permission to draw blood from the patient so that we can measure the number of certain blood cells called T regulatory cells. T regulatory cells are special immune cells that can control or regulate the body's immune response. We want to determine whether T regulatory cells are important participants in graft versus host disease (GVHD), infection and relapse. In GVHD, certain cells from the donated marrow or blood (the graft) attack the body of the transplant patient (the host). GVHD can affect many different parts of the body. The skin, eyes, stomach and intestines are affected most often. GVHD can range from mild to life-threatening. We do not know whether T regulatory cells can modify these conditions. We want to measure these T regulatory cells and learn if these cells do influence these conditions. If we learn that T regulatory cells do affect these conditions, then it may be possible to modify these cells for the benefit of transplant patients.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P25-P50 for not_applicable leukemia
Started Oct 2007
Typical duration for not_applicable leukemia
1 active site
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
Study Start
First participant enrolled
October 1, 2007
CompletedFirst Submitted
Initial submission to the registry
December 19, 2007
CompletedFirst Posted
Study publicly available on registry
December 21, 2007
CompletedPrimary Completion
Last participant's last visit for primary outcome
May 1, 2013
CompletedStudy Completion
Last participant's last visit for all outcomes
May 1, 2013
CompletedResults Posted
Study results publicly available
September 8, 2014
CompletedApril 22, 2016
March 1, 2016
5.6 years
December 19, 2007
August 28, 2014
March 24, 2016
Conditions
Keywords
Outcome Measures
Primary Outcomes (1)
Median Percentage of Treg Cells at 1 Year Post Transplant
The investigative intent is to determine the changes in numbers and function of the regulatory cell population using the best methods to measure this cell population. The frequency of T cells will be summarized at baseline and each time point of follow-up.
1 Year
Study Arms (1)
Stem Cell Transplant
EXPERIMENTALpatient's will be recieving a stem cell transplant on study Conditioning includes: Ara C, Cyclophosphamide, MESNA, TBI-Total Body Irradiation
Interventions
3000 mg/m\^2 - pts will recieve via IV every 12 hours for 6 doses starting at 20:00 hours on day -8
45 mg/kg; divided into 5 doses-will be administered 15 minutes prior to Cyclophosphamide and 3, 6, 9, and 12 hours after each dose of Cyclophosphamide
45 mg/kg; IV once daily on day -7 and day -6 starting at 1400 hours
Total dose 12 Gy, will be delivered in 8 fractions of 150 cGy, each, two fractions per day beginning day -4
Eligibility Criteria
You may qualify if:
- Patients with acute or chronic leukemia or advanced Hodgkin or non Hodgkin lymphoma or myelodysplastic/myeloproliferative disease who are unlikely to be cured by standard chemotherapy treatments. This includes patients who have relapsed after standard chemotherapy treatments and patients in first remission with unfavorable prognostic features.
- Patient must have a genotype HLA identical stem cell donor.
You may not qualify if:
- Patients with a life expectancy (less than or equal to 6 weeks) limited by disease other than leukemia.
- Patients with symptomatic cardiac failure unrelieved by medical therapy or evidence of significant cardiac dysfunction by echocardiogram (shortening fraction \<20%).
- Patients with severe renal disease (i.e., creatinine greater than 3 times normal for age).
- Patients with pre-existing severe restrictive pulmonary disease (FVC less than 40% of predicted).
- Patients with severe hepatic disease (direct bilirubin greater than 3 mg/dl or AST greater than 500 IU/L).
- Patients with severe personality disorder or mental illness.
- Patients with severe infection that in the estimation of the principal investigator prohibits the use of ablative chemotherapy.
- Patients who are documented HIV positive.
- Patients with a Karnofsky performance score \<60% or Lansky performance score \<50%.
- NOTE: Patients who would be excluded from treatment on this protocol strictly for laboratory or performance abnormalities can be included at the principal investigator's discretion after consultation with the members of the SCT Policy and Procedures Committee.
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (1)
Texas Children's Hospital
Houston, Texas, 77030, United States
MeSH Terms
Conditions
Interventions
Condition Hierarchy (Ancestors)
Intervention Hierarchy (Ancestors)
Results Point of Contact
- Title
- Robert Krance, MD
- Organization
- Baylor College of Medicine
Study Officials
- PRINCIPAL INVESTIGATOR
Robert Krance, MD
Baylor College of Medicine
Publication Agreements
- PI is Sponsor Employee
- Yes
Study Design
- Study Type
- interventional
- Phase
- not applicable
- Allocation
- NA
- Masking
- NONE
- Purpose
- TREATMENT
- Intervention Model
- SINGLE GROUP
- Sponsor Type
- OTHER
- Responsible Party
- PRINCIPAL INVESTIGATOR
- PI Title
- Professor
Study Record Dates
First Submitted
December 19, 2007
First Posted
December 21, 2007
Study Start
October 1, 2007
Primary Completion
May 1, 2013
Study Completion
May 1, 2013
Last Updated
April 22, 2016
Results First Posted
September 8, 2014
Record last verified: 2016-03