ALLOGENEIC HEMATOPOIETIC STEM CELL TRANSPLANTATIONPhase 2NCT00429039
A Study to Accelerate Immune System Recovery Following Stem Cell Transplantation
A Phase 2 study testing L-leucyl-L-leucine methyl ester (LLME) in people with ALLOGENEIC HEMATOPOIETIC STEM CELL TRANSPLANTATION, run by Sidney Kimmel Comprehensive Cancer Center at Thomas Jefferson University at 1 site in United States.
Trial summary
The purpose of this study is to determine if pre-treating donor lymphocytes with an investigational drug known as L-leucyl-L-leucine methyl ester (LLME, prior to donor lymphocyte infusion (DLI) will improve the recovery of the immune system following stem cell transplant. Read more about this study
- Who is it for?
- Ages 16 years and older
- Conditions the study is for
- ALLOGENEIC HEMATOPOIETIC STEM CELL TRANSPLANTATION
- What is being tested?
- L-leucyl-L-leucine methyl ester (LLME)
- How many people
- 21 participants
- Where
- 1 siteUnited States
- Study dates
- Sep 2000to Aug 2009
- Phase
- Phase 2
- 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 16 years and older
- All sexes
- No healthy volunteers
- Child, Adult, Older adult
Who may be able to join
- To be treated on this study, patients must have recently undergone a T-cell depleted allogeneic bone marrow or peripheral blood stem cell transplant from an HLA-matched sibling donor, an HLA matched unrelated donor, or an HLA partially matched (single antigen mismatched, two antigen mismatched, or haplodisparate) donor. Patients will be counseled and will sign informed consent for this study prior to their transplant. Our intention is to analyze the effectiveness of LLME treated DLI (Donor Lymphocyte Infusion) on an intent to treat basis. To proceed with this therapy after HSCT, patients must meet the other selection criteria below at the time of first DLI. Additionally, discussion prior to transplant helps present the patient (and donor) a picture of the proposed therapy in its entirety, rather than in piecemeal fashion. A patient or donor's unwillingness to participate in this study will in no way affect their eligibility for transplant therapy at our center.
- At the time of initial DLI therapy, patients must be between 28 and 42 days post allogeneic HSCT or between 28 and 42 days after the last dose of ATG if that agent was used after the transplant as part of their graft rejection prophylaxis. They must also meet the following criteria during the week prior to first infusion:
- Patients must have achieved primary engraftment with an absolute neutrophil count of at least 1000 per l for 3 consecutive days.
- Patients must have a CD4+ lymphocyte count of less than 200 per l. An absolute lymphocyte count of less than 200 per l will be taken as prime facie evidence that the CD4+ lymphocyte count meets this criteria.
- Patients may not exhibit overt hematologic manifestations of relapse or persistent disease. Evidence of recurrent/persistent disease based primarily on flow cytometry, cytogenetics, chimerism analysis, or other molecular studies does not by itself represent grounds for exclusion.
- Patients must be 16 years of age or older. There is no upper age limit for this study.
- Patients must not be pregnant.
- Patients must not have any documented graft-versus-host disease.
Who cannot join
None listed.
Trial locations and contacts
1 site in 1 country.
United States1 site
Thomas Jefferson University Hospital
Philadelphia, Pennsylvania, 19107
About this study
Official title: LLME Treated Cellular Immunotherapy Following T-cell Depleted Allogeneic Heamtopoietic Stem Cell Transplantation for Acceleration of Immune Reconstitution
The purpose of this study is to determine if pre-treating donor lymphocytes with an investigational drug known as L-leucyl-L-leucine methyl ester (LLME, prior to donor lymphocyte infusion (DLI) will improve the recovery of the immune system following stem cell transplant.
Read the detailed description
If you agree to participate in this research study you will be evaluated during the 4th-6th week after your transplant to determine the number of CD4 cells in your circulation and to determine that your body has eliminated all of the immune suppressing medicines used around the time of your transplant. This will be performed by studying the cells from two tubes of blood. Thereafter, blood cells will be obtained from your donor (the same donor as used for the transplant). These cells from the donor will be treated with LLME in the laboratory. The cells will then be washed to eliminate the LLME, counted, and the desired number will be administered to you by transfusion.
Four to six weeks later, you will have additional blood drawn (2-3 teaspoons) to determine the number of CD4 cells in your blood. If the number is below 100, you will be given another transfusion of LLME treated cells, but you will receive a larger number of cells. Above 100 CD4 cells, the risk of infections appears to decrease. This will be repeated every 8 weeks provided that you and your donor remain willing to continue until one of three things happens. The three things that would cause us to stop further DLI would be: (1) you develop a CD4 count of over 100, (2) you develop evidence of GVHD, or (3) we reach the maximum practical number of cells which your donor could provide.
Your donor will also be reevaluated by medical history, physical examination, and blood tests to ensure that he/she remains healthy and can undergo the cell donation procedure safely. He or she will donate the first doses of white cells by drawing a small amount of blood. Later donations, if necessary, will be collected in a manner that is very similar to how platelets are normally collected from volunteer donors by the blood bank. The manner in which the transfusions are given will be similar to that in which you have received red blood cell and platelet transfusions in the past.
- Being tested
- L-leucyl-L-leucine methyl ester (LLME)
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
L-leucyl-L-leucine methyl ester (LLME)Drug
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted31 Jan 2007 (estimated)
- Study startSep 2000
- Primary completionOct 2007
- Study completionAug 2009
Why it stopped: Low accrual.
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for ALLOGENEIC HEMATOPOIETIC STEM CELL TRANSPLANTATIONStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
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 2
- Primary purpose
- Treatment
- Allocation
- Non-randomised
- Intervention model
- Single group
- Masking
- None (open label)
- Enrolment
- 21 participants (actual)
Sponsor and investigators
- Lead sponsor
- Sidney Kimmel Comprehensive Cancer Center at Thomas Jefferson University
- Sponsor type
- University, hospital or other
- Collaborators
- National Cancer Institute (NCI)
- Responsible party
- Sponsor
- Investigators
- Neal Flomenberg, M.D., Principal investigator, Thomas Jefferson University, Department of Medical Oncology
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT00429039
- Sponsor's protocol ID
- 01.0082
- Other IDs
- 2000-66
- Status last verified
- Oct 2016
- First submitted
- 29 Jan 2007
- Last updated
- 21 Oct 2016
- Results posted
- No
- Data monitoring committee
- Yes
Study at a glance
From the registry record, last updated by the sponsor on 21 Oct 2016. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- LLME Treated Cellular Immunotherapy Following T-cell Depleted Allogeneic Heamtopoietic Stem Cell Transplantation for Acceleration of Immune Reconstitution
- ClinicalTrials.gov ID
- NCT00429039
- Acronym / sponsor ID
- 01.0082
- Phase
- Phase 2
- Study type
- Interventional
- Recruitment status
- TerminatedReason stopped: Low accrual.
- Enrolment
- 21 participants (actual)
- Lead sponsor
- Sidney Kimmel Comprehensive Cancer Center at Thomas Jefferson UniversityUniversity, hospital or other
- Collaborators
- National Cancer Institute (NCI)
- Study start
- Sep 2000
- Primary completion
- Oct 2007 (actual)
- Study completion
- Aug 2009 (actual)
- First posted
- 31 Jan 2007 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The purpose of this study is to determine if pre-treating donor lymphocytes with an investigational drug known as L-leucyl-L-leucine methyl ester (LLME, prior to donor lymphocyte infusion (DLI) will improve the recovery of the immune system following stem cell transplant.
Detailed description
If you agree to participate in this research study you will be evaluated during the 4th-6th week after your transplant to determine the number of CD4 cells in your circulation and to determine that your body has eliminated all of the immune suppressing medicines used around the time of your transplant. This will be performed by studying the cells from two tubes of blood. Thereafter, blood cells will be obtained from your donor (the same donor as used for the transplant). These cells from the donor will be treated with LLME in the laboratory. The cells will then be washed to eliminate the LLME, counted, and the desired number will be administered to you by transfusion.
Four to six weeks later, you will have additional blood drawn (2-3 teaspoons) to determine the number of CD4 cells in your blood. If the number is below 100, you will be given another transfusion of LLME treated cells, but you will receive a larger number of cells. Above 100 CD4 cells, the risk of infections appears to decrease. This will be repeated every 8 weeks provided that you and your donor remain willing to continue until one of three things happens. The three things that would cause us to stop further DLI would be: (1) you develop a CD4 count of over 100, (2) you develop evidence of GVHD, or (3) we reach the maximum practical number of cells which your donor could provide.
Your donor will also be reevaluated by medical history, physical examination, and blood tests to ensure that he/she remains healthy and can undergo the cell donation procedure safely. He or she will donate the first doses of white cells by drawing a small amount of blood. Later donations, if necessary, will be collected in a manner that is very similar to how platelets are normally collected from volunteer donors by the blood bank. The manner in which the transfusions are given will be similar to that in which you have received red blood cell and platelet transfusions in the past.
Study design
- Primary purpose
- Treatment
- Allocation
- Non-randomised
- Intervention model
- Single group
- Masking
- None (open label)
Who may qualify
- Ages
- 16 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Child, Adult, Older adult
Key inclusion criteria (8 listed)
- To be treated on this study, patients must have recently undergone a T-cell depleted allogeneic bone marrow or peripheral blood stem cell transplant from an HLA-matched sibling donor, an HLA matched unrelated donor, or an HLA partially matched (single antigen mismatched, two antigen mismatched, or haplodisparate) donor. Patients will be counseled and will sign informed consent for this study prior to their transplant. Our intention is to analyze the effectiveness of LLME treated DLI (Donor Lymphocyte Infusion) on an intent to treat basis. To proceed with this therapy after HSCT, patients must meet the other selection criteria below at the time of first DLI. Additionally, discussion prior to transplant helps present the patient (and donor) a picture of the proposed therapy in its entirety, rather than in piecemeal fashion. A patient or donor's unwillingness to participate in this study will in no way affect their eligibility for transplant therapy at our center.
- At the time of initial DLI therapy, patients must be between 28 and 42 days post allogeneic HSCT or between 28 and 42 days after the last dose of ATG if that agent was used after the transplant as part of their graft rejection prophylaxis. They must also meet the following criteria during the week prior to first infusion:
- Patients must have achieved primary engraftment with an absolute neutrophil count of at least 1000 per l for 3 consecutive days.
- Patients must have a CD4+ lymphocyte count of less than 200 per l. An absolute lymphocyte count of less than 200 per l will be taken as prime facie evidence that the CD4+ lymphocyte count meets this criteria.
- Patients may not exhibit overt hematologic manifestations of relapse or persistent disease. Evidence of recurrent/persistent disease based primarily on flow cytometry, cytogenetics, chimerism analysis, or other molecular studies does not by itself represent grounds for exclusion.
Key exclusion criteria (0 listed)
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| L-leucyl-L-leucine methyl ester (LLME) | Drug | – |
Primary outcome
Not reported in the source record.
Results and safety
The study was stopped early (reason given: Low accrual.). Results are not available in the source record.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 21 Oct 2016.
- Kimmel Cancer Center at Thomas Jefferson UniversityLink provided by the sponsor.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Neal Flomenberg, M.D. principal investigator
Thomas Jefferson University, Department of Medical Oncology
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 2 study testing L-leucyl-L-leucine methyl ester (LLME) in people with ALLOGENEIC HEMATOPOIETIC STEM CELL TRANSPLANTATION, run by Sidney Kimmel Comprehensive Cancer Center at Thomas Jefferson University 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 8 inclusion and 0 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: stopped early, as of the sponsor's last update on 21 Oct 2016. 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 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.
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 was stopped early (reason given: Low accrual.). Results are not available in the source record.
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.
Where can I read the original study information?
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 21 Oct 2016.