Acute Myeloid Leukemia (AML) Clinical Trial
Official title:
Provision of TCRγδ T Cells and Memory T Cells Plus Selected Use of Blinatumomab in Naïve T-cell Depleted Haploidentical Donor Hematopoietic Cell Transplantation for Hematologic Malignancies Relapsed or Refractory Despite Prior Transplantation
This study seeks to examine treatment therapy that will reduced regimen-related toxicity and relapse while promoting rapid immune reconstitution with limited serious graft-versus-host-disease (GVHD) and also improve disease-free survival and quality of life. The investigators propose to evaluate the safety and efficacy of selective naive T-cell depleted (by TCRɑβ and CD45RA depletion, respectively) haploidentical hematopoietic cell transplant (HCT) following reduced intensity conditioning regimen that avoids radiation in patients with hematologic malignancies that have relapsed or are refractory following prior allogeneic transplantation. PRIMARY OBJECTIVE: - To estimate engraftment by day +30 post-transplant in patients who receive TCRɑβ-depleted and CD45RA-depleted haploidentical donor progenitor cell transplantation following reduced intensity conditioning regimen without radiation. SECONDARY OBJECTIVES: - Assess the safety and feasibility of the addition of Blinatumomab in the early post-engraftment period in patients with CD19+ malignancy. - Estimate the incidence of malignant relapse, event-free survival, and overall survival at one-year post-transplantation. - Estimate incidence and severity of acute and chronic (GVHD). - Estimate the rate of transplant related mortality (TRM) in the first 100 days after transplantation.
Status | Recruiting |
Enrollment | 52 |
Est. completion date | July 1, 2025 |
Est. primary completion date | July 1, 2024 |
Accepts healthy volunteers | No |
Gender | All |
Age group | N/A to 21 Years |
Eligibility | Inclusion Criteria for Transplant Recipient: - Age less than or equal to 21 years. - Any of the following hematologic malignancies that has relapsed or remains refractory after prior allogeneic HCT (this includes any stage of disease - such as refractory due to induction failure, refractory in relapse, or in any CR - as long as the hematologic malignancy remained persistent or returned after a previous allogeneic HCT): - ALL, AML, Myeloid Sarcoma, CML, Juvenile myelomonocytic leukemia (JMML), myelodysplastic syndrome (MDS), non-Hodgkin lymphoma (NHL) - Has a suitable single haplotype matched (= 3 of 6) family member donor. - Does not have any other active malignancy other than the one for which this transplant is indicated. - If prior CNS leukemia, it must be treated and in CNS CR - Does not have current uncontrolled bacterial, fungal, or viral infection. - There is no minimum time from the previous transplant, but patients must meet the following criteria: - Left ventricular ejection fraction > 40%, or shortening fraction = 25%. - Creatinine clearance (CrCl) or glomerular filtration rate (GFR) = 50 ml/min/1.73m2. - Forced vital capacity (FVC) = 40% of predicted value; or pulse oximetry = 92% on room air if patient is unable to perform pulmonary function testing. - Karnofsky or Lansky (age-dependent) performance score = 50 (See Appendix A). - Bilirubin = 3 times the upper limit of normal for age. - Alanine aminotransferase (ALT) or aspartate aminotransferase (AST) = 5 times the upper limit of normal for age. - Not pregnant. If female with child bearing potential, must be confirmed by negative serum or urine pregnancy test within 14 days prior to enrollment. - Not breast feeding Inclusion Criteria for Haploidentical Donor: - At least single haplotype matched (= 3 of 6) family member - At least 18 years of age. - HIV negative. - Not pregnant as confirmed by negative serum or urine pregnancy test within 14 days prior to enrollment (if female). - Not breast feeding. - Regarding donation eligibility, is identified as either: - Completed the process of donor eligibility determination as outlined in 21 CFR 1271 and agency guidance; OR - Does not meet 21 CFR 1271 eligibility requirements, but has a declaration of urgent medical need completed by the principal investigator or physician sub-investigator per 21 CFR 1271. |
Country | Name | City | State |
---|---|---|---|
United States | St. Jude Children's Research Hospital | Memphis | Tennessee |
Lead Sponsor | Collaborator |
---|---|
St. Jude Children's Research Hospital |
United States,
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | The number of patients engrafted by day +30 post-transplant | ANC engraftment is defined as the first of 3 consecutive tests performed on different days of an ANC = 500/mm^3 with evidence of donor cell engraftment. | 30 days post-transplant | |
Secondary | The number of patients experiencing Blinatumomab permanent discontinuation due to toxicity | If the drug is held for more than 2 weeks due to toxicity, it will be permanently discontinued. | 3 months post-transplant | |
Secondary | The estimate of cumulative incidence of relapse | The estimate of cumulative incidence of relapse will be estimated using Kalbfleisch-Prentice method. Death is the competing risk event. The Kaplan-Meier estimates of overall survival (OS) and event-free survival (EFS) along with their standard errors will be calculated.
OS is defined as time from transplantation to death or last follow-up, whichever comes first. EFS is defined as time from transplantation to events including relapse, graft failure, death due to any cause and last follow-up whichever comes first. The participants surviving at the time of analysis without events will be censored. |
One year post-transplant | |
Secondary | The cumulative incidence of acute and chronic Graft-Versus-Host Disease (GVHD) | The cumulative incidence of acute and chronic GVHD will be estimated using Kalbfleisch-Prentice method. Death is the competing risk event. GVHD will be reported separately for participants receiving tacrolimus and those receiving sirolimus.
The severity of acute GVHD and chronic GVHD will be described. |
One year post transplant | |
Secondary | The cumulative incidence of transplant related mortality | The cumulative incidence of transplant related mortality will be estimated using Kalbfleisch-Prentice method. Deaths before day 100 because of other reasons are the competing risk events. | 100 days post transplant |
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