This observational study will compare outcomes of a prospectively-enrolled cohort of Hematopoietic Stem Cell Transplant (HCT) recipients with outcomes of a cohort of age-matched historical non-HCT controls. Patients undergoing alloHCT will receive HCT in a US transplant center and be reported to the Center for International Blood and Marrow Transplant Research (CIBMTR) using well-established CIBMTR report forms and data collection procedures as well as a study-specific supplemental form. Data on the historical non-HCT controls will be collected at 14 US academic centers. These centers will provide data on all consecutive patients with PMF, post-ET MF, or post-PV MF referred to their institutions between 2000 and 2012.
PMF, post-ET MF, or post-PV MF.
Int-2 or high-risk disease as determined by the DIPSS.
Age ≥55 at the time of DIPSS assessment.
Donors must be a 6/6 HLA-matched related donors, defined by Class I (HLA-A and -B) intermediate resolution or high resolution DNA-based typing and Class II (HLA-DRBI) at high resolution DNA-based typing (but not monozygotic twins) OR an 8/8 HLA-A, -B, -C, and -DRB1 at high resolution DNA-based typing matched unrelated donor identified through the National Marrow Donor Program (NMDP)/Be The Match. Donors must meet institutional or NMDP/Be The Match selection criteria; there is no age restriction for sibling donors.
AlloHCT using umbilical cord blood unit(s) or HLA-mismatched adult donors (< 6/6 HLA alleles for related and < 8/8 HLA alleles for unrelated).
Overlap syndromes.
Patients with primary MF (PMF), post-essential thrombocythemia (ET) MF, or post-polycythemia vera (PV) MF, with intermediate-2 or high-risk disease as determined by the DIPSS, and aged ≥55 at the time of DIPSS assessment are eligible for this study. For the alloHCT arm of the HLA-Matched Donor HCT Study, donors must be either 6/6 HLA-matched related donors, defined by Class I (HLA-A and -B) intermediate resolution or high resolution DNA-based typing and Class II (HLA-DRBI) at high resolution DNA-based typing (but not monozygotic twins), OR an 8/8 HLA-A, -B, -C, and -DRB1 at high resolution DNA-based typing matched unrelated donors; both peripheral blood stem cells and bone marrow grafts are allowed, and all conditioning regimen intensities and GVHD prophylaxis regimens are allowed. For the Haploidentical Donor Study, donors must be haploidentical.
Cohort
Prospective
Hematopoietic Stem Cell Transplant
Other interventionThis observational study will compare outcomes of prospectively enrolled HCT recipients with outcomes of a cohort of age-matched non-HCT controls.
Compare five year survival
Compare the five-year survival probabilities from DIPSS assessment between the two study arms: alloHCT recipients (arm 1) and non-HCT therapies (ruxolitinib / best supportive care) recipients (arm 2).
Compare leukemia-free survival
Compare leukemia-free survival at five years from DIPSS assessment date to the date of progression to AML or death from any cause, whichever comes first. Two co-secondary analyses will be conducted, one for all alloHCT patients versus Arm 2 and one for the subset of patients receiving MAC prior to alloHCT versus Arm 2. Observation is censored at the date of last follow-up for patients known to be alive without leukemia. Progression to AML is defined as \>20% leukemia blasts in bone marrow or in the peripheral blood.
Cumulative incidences of chronic GVHD
Occurrence of symptoms in any organ system fulfilling the criteria of chronic GVHD. Patients are censored at last follow-up or second transplant.
Cumulative incidences of acute GVHD
Occurrence of grade II, III, and/or IV skin, gastrointestinal, or liver abnormalities fulfilling the Consensus criteria of acute GVHD. Patients are censored at last follow-up or second transplant.
Cumulative incidence of treatment related mortality
Death from any cause in the first 28 days post-transplantation, irrespective of relapse status. Death beyond day +28 will only be considered transplant-related if the disease is in remission. This event will be summarized as a cumulative incidence estimate with relapse/persistence as the competing risk.
Click on the lead sponsor to view all of their trials.
Center for International Blood and Marrow Transplant Research
Lead sponsor
National Marrow Donor Program
Collaborator
National Institutes of Health (NIH)
Collaborator
National Cancer Institute (NCI)
Collaborator
