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About
This phase I trial studies the side effects and best dose of total bone marrow and lymphoid irradiation when given together with chemotherapy before donor stem cell transplant in treating patients with myelodysplastic syndrome or acute leukemia. Total marrow and lymphoid irradiation is a type of radiation therapy that targets bone marrow and blood, where the cancer is, instead of applying radiation to the whole body. Stem cell transplants use high doses of chemotherapy and radiation therapy, such as total marrow and lymphoid irradiation, to kill cancer cells, but these treatments kill normal cells as well. After chemotherapy, healthy cells from a donor are given to the patient to help the patient grow new blood cells.
Full description
PRIMARY OBJECTIVES:
I. To establish safety and determine the maximum tolerated dose of total marrow and lymphoid irradiation when given in combination with fludarabine (fludarabine phosphate) and pre-post-transplant cyclophosphamide, as conditioning for haploidentical hematopoietic cell transplantation (HCT) in patients with high-risk acute lymphocytic or myelogenous leukemia or intermediate/high-risk myelodysplastic syndrome.
II. To evaluate the safety of the regimen at each dose level by assessing adverse events: type, frequency, severity, attribution, time course, duration.
III. To evaluate the safety of the regimen at each dose level by assessing complications: including acute/chronic graft-versus-host disease (GvHD), infection and delayed engraftment.
SECONDARY OBJECTIVES:
I. To estimate overall survival (OS), progression-free survival (PFS), cumulative incidence (CI) of relapse/progression, and non-relapse mortality (NRM) at +100 Days, 1 year and 2 years.
II. To characterize minimal residual disease from bone marrow aspirates on Days +30, +100, +180 post-transplant and describe in relation to total marrow and lymphoid irradiation (TMLI) dose level and patient disease status.
III. To describe the kinetics of immune cell recovery in the first year post-transplantation.
OUTLINE: This is a dose-escalation study of TMLI.
CONDITIONING: Patients undergo TMLI twice daily (BID) on days -7 to -4 or -3 (depending on the dose level). Patients also receive fludarabine phosphate intravenously (IV) on days -7 to -3 and cyclophosphamide IV on days -7, -6, 3, and 4.
TRANSPLANT: Patients undergo bone marrow or peripheral blood stem cell transplant on day 0.
GHVD PROPHYLAXIS: Patients receive tacrolimus* IV once daily (QD) or orally (PO) BID on days 5-180. Patients also receive mycophenolate mofetil PO thrice daily (TID) or IV on days 5-35. Treatment with tacrolimus and mycophenolate mofetil may continue in the presence of active GVHD.
*NOTE: Patients intolerant of tacrolimus may receive cyclosporine.
After completion of study treatment, patients are followed up twice weekly for 100 days, twice monthly until 6 months, monthly until the patient is off immunosuppressive therapy without evidence of GVHD, and then at least yearly for a total of 5 years.
Enrollment
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Inclusion criteria
Eligible patients will have a histopathologically confirmed diagnosis of hematologic malignancy in one of the following categories:
Acute myelogenous leukemia
Acute lymphocytic leukemia
In CR1 with poor risk cytogenetics:
In CR2 or CR3
With chemosensitive primary refractory disease
Myelodysplastic syndrome in high-intermediate (int-2) and high risk categories
Karnofsky or Lansky performance status >= 80
A pretreatment measured creatinine clearance (absolute value) of >= 50 ml/minute
Serum bilirubin =< 2.0 mg/dl
Serum glutamic oxaloacetic transaminase (SGOT) and serum glutamate pyruvate transaminase (SGPT) =< 2.5 times the institutional upper limits of normal
Ejection fraction measured by echocardiogram or multigated acquisition scan (MUGA) >= 50%
Diffusing capacity of the lung for carbon monoxide (DLCO) and forced expiratory volume in one second (FEV1) > 60% predicted
Women of child-bearing potential and men must agree to use adequate contraception (hormonal or barrier method of birth control or abstinence) prior to study entry and for six months following duration of study participation; should a woman become pregnant or suspect that she is pregnant while participating on the trial, she should inform her treating physician immediately
The recipient must have a related donor genotypically human leukocyte antigen (HLA)-A, B,C and DRB1 loci haploidentical to the recipient
No HLA matched sibling or matched unrelated donor is available
Patients should be off all previous intensive therapy, chemotherapy or radiotherapy for 3 weeks prior to commencing therapy on this study
* (NOTE: Low dose chemotherapy or maintenance chemotherapy given within 7 days of planned study enrollment is permitted; these include: hydroxyurea, 6-meraptopurine, oral methotrexate, vincristine, oral etoposide, and tyrosine kinase inhibitors [TKIs]; FLT-3 inhibitors such as sorafenib, crenolanib, quizartinib, midostaurin can also be given up to 3 days before conditioning regimen)
Adequate organ function
All subjects must have the ability to understand and the willingness to sign a written informed consent
Prior radiation therapy that would exclude the use of TMLI
DONOR ELIGIBILITY CRITERIA:
Exclusion criteria
Patients should not have any uncontrolled illness including ongoing or active bacterial, viral or fungal infection
Patients may not be receiving any other investigational agents, or concurrent biological, intensive chemotherapy, or radiation therapy for the previous three weeks from conditioning
* (NOTE: Low dose chemotherapy or maintenance chemotherapy given within 7 days of planned study enrollment is permitted; these include: hydroxyurea, 6-meraptopurine, oral methotrexate, vincristine, oral etoposide, and tyrosine kinase inhibitors [TKIs]; FLT-3 inhibitors such as sorafenib, crenolanib, quizartinib, midostaurin can also be given up to 3 days before conditioning regimen)
History of allergic reactions attributed to compounds of similar chemical or biologic composition to any in the pre- or post-transplant regimen
Pregnant women are excluded from this study
Patients with other active malignancies are ineligible for this study, other than non-melanoma skin cancers
The recipient has a medical problem or neurologic/psychiatric dysfunction which would impair his/her ability to be compliant with the medical regimen and to tolerate transplantation or would prolong hematologic recovery which in the opinion of the principal investigator would place the recipient at unacceptable risk
Patients may not have had a prior autologous or allogeneic transplant
HLA-matched or partially matched (7/8 or 8/8) related or unrelated donor is available to donate
Patients may not have received more than 3 prior regimens, where the regimen intent was to induce remission
Patients treatment history may not include anti-CD33 monoclonal antibody therapy (e.g., SGN-CD33 or Mylotarg)
Subjects, who in the opinion of the investigator, may not be able to comply with the safety monitoring requirements of the study
DONOR EXCLUSION CRITERIA:
Primary purpose
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31 participants in 1 patient group
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Data sourced from clinicaltrials.gov
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