Clinical Trials Logo

Clinical Trial Summary

There is no curative therapy once acute leukemia patients relapse after transplant. Patients who develop clinically significant graft versus host disease (GVHD) have a lower rate of relapse than those who do not develop GVHD. We are initiating this study of post-transplant fast withdrawal of immunosuppression and donor lymphocyte infusions, with a goal of achieving full donor chimerism in children with hematologic malignancies. If our hypothesis that full donor chimerism results in leukemia-free survival is correct, using immune modulation to achieve full donor chimerism should decrease relapse rate and thus increase survival. The goal of this Phase II study is to identify if achieving full donor chimerism in whole blood CD3+ and leukemia-specific (CD14/15+, CD19+, CD33+ and CD34+) subset may decrease the risk of relapse of patients undergoing allogeneic transplant for hematologic malignancy.


Clinical Trial Description

The goal of this Phase II study is to identify if achieving full donor chimerism in whole blood, CD3+, and leukemia-specific subset (CD3+, CD14/15+, CD19+, CD33+ and CD34+ subset) may decrease the risk of relapse of patients undergoing allogeneic transplant for hematologic malignancy.

We estimate that total of 50 recipient patients will need to be enrolled. Of these 50 recipient patients an observation group and an intervention group will be formed. We want to enroll 25 recipient patients in the intervention group, this group will receive study intervention and their outcomes will be the focus of statistical analysis for this study. Intervention will involve fast withdrawal of immunosuppression following transplant and donor lymphocyte infusion (DLI) until full donor chimerism is achieved. Chimerism is a genetic test that measures the proportion of donor's and recipient's cells in blood or bone marrow. Twenty five patients will undergo fast withdrawal of immunosuppression and 33 -50% of them (8-13) will undergo DLI following fast withdrawal of immunosuppression.

Patients will have peripheral blood (PB) chimerism tested upon engraftment. A confirmatory test from PB and bone marrow (BM) will be done on day 45±7. Minimal residual disease (MRD) will be examined by immunoflow, FISH, cytogenetics or PCR. Patients with positive MRD will be on a faster schedule of immune intervention than patients with negative MRD. Interventions will be carried on until 1 year post transplant. If confirmatory testing shows no evidence of MRD and full donor chimerism is present in all subsets, the patient will be part of the "observation" group and be observed until 2 years post transplant. Chimerism will be repeated at 12 and 24 months post transplant. If the patient has mixed chimerism on both confirmatory tests (PB and BM), the patient will be part of the "intervention" group and fast withdrawal of immunosuppression will be initiated. If the patient has mixed chimerism on one of the confirmatory tests (PB or BM), the test will be repeated in 2 weeks and the patient will proceed with either observation or intervention, based on the result of the repeated test. Patients will be followed for the incidence of acute and chronic Graft Versus Host Disease (GVHD) and relapse until 2 years post transplant. The study will be considered successful if the relapse rate at 2 years post transplant is ≤20% for the entire study or ≤ 40% for the intervention group. ;


Study Design

Allocation: Non-Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Open Label, Primary Purpose: Treatment


Related Conditions & MeSH terms

  • Acute Leukemia
  • Acute Lymphoblastic Leukemia
  • Acute Myeloid Leukemia
  • Biphenotypic Leukemia
  • Bone Marrow Clonal Malformations
  • Chronic Myelogenous Leukemia
  • Juvenile Myelomonocytic Leukemia
  • Leukemia
  • Leukemia, Lymphoid
  • Leukemia, Myelogenous, Chronic, BCR-ABL Positive
  • Leukemia, Myeloid
  • Leukemia, Myeloid, Acute
  • Leukemia, Myelomonocytic, Acute
  • Leukemia, Myelomonocytic, Chronic
  • Leukemia, Myelomonocytic, Juvenile
  • Monosomy 7
  • Myelodysplastic Syndromes
  • Pre-leukemic Syndromes
  • Precursor Cell Lymphoblastic Leukemia-Lymphoma
  • Preleukemia
  • Syndrome

NCT number NCT01036009
Study type Interventional
Source University of California, San Francisco
Contact
Status Active, not recruiting
Phase Phase 2
Start date October 2009
Completion date July 2015

See also
  Status Clinical Trial Phase
Recruiting NCT05400122 - Natural Killer (NK) Cells in Combination With Interleukin-2 (IL-2) and Transforming Growth Factor Beta (TGFbeta) Receptor I Inhibitor Vactosertib in Cancer Phase 1
Recruiting NCT04460235 - Immunogenicity of an Anti-pneumococcal Combined Vaccination in Acute Leukemia or Lymphoma Phase 4
Completed NCT04022785 - PLX51107 and Azacitidine in Treating Patients With Acute Myeloid Leukemia or Myelodysplastic Syndrome Phase 1
Completed NCT03678493 - A Study of FMT in Patients With AML Allo HSCT in Recipients Phase 2
Recruiting NCT05424562 - A Study to Assess Change in Disease State in Adult Participants With Acute Myeloid Leukemia (AML) Ineligible for Intensive Chemotherapy Receiving Oral Venetoclax Tablets in Canada
Completed NCT03197714 - Clinical Trial of OPB-111077 in Patients With Relapsed or Refractory Acute Myeloid Leukaemia Phase 1
Terminated NCT03224819 - Study of Emerfetamab (AMG 673) in Adults With Relapsed/Refractory Acute Myeloid Leukemia (AML) Early Phase 1
Active, not recruiting NCT03844048 - An Extension Study of Venetoclax for Subjects Who Have Completed a Prior Venetoclax Clinical Trial Phase 3
Active, not recruiting NCT04070768 - Study of the Safety and Efficacy of Gemtuzumab Ozogamicin (GO) and Venetoclax in Patients With Relapsed or Refractory CD33+ Acute Myeloid Leukemia:Big Ten Cancer Research Consortium BTCRC-AML17-113 Phase 1
Active, not recruiting NCT04107727 - Trial to Compare Efficacy and Safety of Chemotherapy/Quizartinib vs Chemotherapy/Placebo in Adults FMS-like Tyrosine Kinase 3 (FLT3) Wild-type Acute Myeloid Leukemia (AML) Phase 2
Recruiting NCT04920500 - Bioequivalence of Daunorubicin Cytarabine Liposomes in Naive AML Patients N/A
Recruiting NCT04385290 - Combination of Midostaurin and Gemtuzumab Ozogamicin in First-line Standard Therapy for Acute Myeloid Leukemia (MOSAIC) Phase 1/Phase 2
Recruiting NCT03897127 - Study of Standard Intensive Chemotherapy Versus Intensive Chemotherapy With CPX-351 in Adult Patients With Newly Diagnosed AML and Intermediate- or Adverse Genetics Phase 3
Active, not recruiting NCT04021368 - RVU120 in Patients With Acute Myeloid Leukemia or High-risk Myelodysplastic Syndrome Phase 1
Recruiting NCT03665480 - The Effect of G-CSF on MRD After Induction Therapy in Newly Diagnosed AML Phase 2/Phase 3
Completed NCT02485535 - Selinexor in Treating Patients With Intermediate- and High-Risk Acute Myeloid Leukemia or High-Risk Myelodysplastic Syndrome After Transplant Phase 1
Enrolling by invitation NCT04093570 - A Study for Participants Who Participated in Prior Clinical Studies of ASTX727 (Standard Dose), With a Food Effect Substudy at Select Study Centers Phase 2
Recruiting NCT04069208 - IA14 Induction in Young Acute Myeloid Leukemia Phase 2
Recruiting NCT05744739 - Tomivosertib in Relapsed or Refractory Acute Myeloid Leukemia (AML) Phase 1
Recruiting NCT04969601 - Anti-Covid-19 Vaccine in Children With Acute Leukemia and Their Siblings Phase 1/Phase 2