Haploidentical BMT With Post-Transplant Cyclophosphamide and Bendamustine

Myelodysplastic Syndromes Clinical Trial

Official title:

A Phase I/Ib Study of Haploidentical Bone Marrow Transplant With Post-Transplant Cyclophosphamide and/or Bendamustine

Clinical Trial Details — Status: Active, not recruiting

Administrative data

• NCT number: NCT02996773
• Other study ID #: 1609876907
• Status: Active, not recruiting
• Phase: Phase 1
• Start date: November 29, 2016
• Est. completion date: August 25, 2025

Study information

• Verified date: July 2023
• Source: University of Arizona
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

The purpose of this study is to evaluate the safety of progressively substituting day +3 and +4 post-transplant cyclophosphamide (PT-CY) with post-transplant bendamustine (PT-BEN) in myeloablative (MAC) haploidentical hematopoietic cell transplantation (HHCT) for patients with hematological malignancies.

The goal of the Phase 1 component of the study is to evaluate the safety of progressively substituting post-transplant cyclophosphamide (PT-CY) given on Days +3 and +4 with bendamustine (PT-BEN). The Phase I component of the study has been completed.

The Phase Ib component of the study will continue to evaluate the safety and efficacy of subjects who receive PT-BEN on Days +3 and +4 at the maximum tolerated dose determined by Phase I. The Phase Ib component of the study has been completed.

Approximately, 18-36 subjects will be treated as part of Phase I and 15 as part of Phase Ib. Approximately 18 subjects will be used as controls, subjects that receive no PET-BEN, for direct comparison. Total, approximately 38-56 treatment and control patients and 38-56 donor subjects will be enrolled.

Description:

This study will follow the standard-of-care bone marrow transplant (BMT), with the only exception being to progressively substitute post-transplant cyclophosphamide (on Days +3 and +4 after BMT) with bendamustine. Six dose levels were planned for the Phase I component of the study, consisting of a combination of sequentially reduced doses of cyclophosphamide (PT-CY) and increased doses of bendamustine (PT-BEN) initially on Day +4 after BMT, followed by the same sequential reduction and increase on Day +3. An interim analysis was performed after cohort 3 was completed in Phase I and included a preliminary comparison between treatment and control groups. Phase Ib will evaluate patients treated with PT-CY on day +3 and PT-BEN on day +4.

Control patients will be patients that have declined to participate in the main trial but will receive haploidentical BMT with the current standard of two days of PT-CY (and no PT-BEN) and will be consented for the immune monitoring studies only.

Recruitment information / eligibility

• Status: Active, not recruiting
• Enrollment: 50
• Est. completion date: August 25, 2025
• Est. primary completion date: August 25, 2025
• Accepts healthy volunteers: No
• Gender: All
• Age group: 4 Years to 30 Years

Eligibility

Inclusion Criteria:

• Be willing and able to provide written consent/assent for the trial.

• Diagnosed with one of the following high-risk malignancies, which require hematopoietic cell transplantation (HCT) but do not have an available Human Leukocyte Antigen (HLA)-matched related or unrelated donor or acceptable cord blood

• High risk acute lymphoblastic leukemia (ALL) in 1st complete remission (CR1) or greater

• High risk acute myelogenous leukemia (AML) in CR1 or greater

• High risk undifferentiated acute leukemia

• High risk myelodysplastic syndrome (MDS)

• Chronic Myelogenous Leukemia (CML) failing or intolerant to Tyrosine Kinase Inhibitors (TKIs) or in accelerated, blastic phase, or in second or subsequent chronic phase

• Lymphoma, (Hodgkin and Non-Hodgkins Lymphoma including marginal zone, follicular lymphoma, chemotherapy-sensitive large-cell, mantle cell lymphoma, gray zone, and Burkitt's lymphoma in remission).

• At least one haploidentical related donor is available for bone marrow harvest.

• Molecular based HLA typing for the HLA-A, -B, -Cw, beta chain (-DRB1) and - DQ Beta 1 Locus (DQB1loci) to the resolution is needed to establish haploidentity.

• A minimum match of 5/10 is required.

• No availability of an 8/8 HLA-matched related or unrelated donor or clinical urgency for transplant (e.g., needed within 4-8 weeks) at which time an acceptable unrelated donor will not be available.

Exclusion Criteria:

• Refractory acute leukemia (>5% blasts) or progressive disease

• Untreated or progressive central nervous system leukemia

• Refractory to chemotherapy lymphoma

• Co-morbidities precluding patient's ability to tolerate BMT

• Aspartate Aminotransferase (AST)/ Alanine Aminotransferase (ALT) > 5 x upper limit of normal (ULN)

• Bilirubin > 2 x ULN

• Creatinine greater than >2 x ULN for age or creatinine clearance/glomerular filtration rate (GFR) <40 ml/min/1.73m2

• Pulmonary function: Diffusing capacity of the lung for carbon monoxide (DLCO) < 40% of normal or O2 Sat <92%

• Cardiac: left ventricular ejection fraction <35%

• Active infection at time of hospital admission of Haplo BMT

• Documented fungal infection or highly suspected and receiving treatment for presumed fungal infection within 3 months of BMT

• HIV positive

• Karnofsky score (adults) < 60% or Lansky score < 50% (pediatrics).

• Positive pregnancy test for girls post menarche or women of childbearing age.

• Severe psychiatric illness or mental deficiency making compliance to treatment unlikely and/or informed consent impossible.

• Any reason, at the investigator's discretion, that the participation of the patient in this protocol would not be in patient's best interest, or where the patient would be unable to adhere to the study requirements.

Related Conditions & MeSH terms

• Acute Lymphoblastic Leukemia
• Acute Myelogenous Leukemia
• Burkitt Lymphoma
• Chronic Myelogenous Leukemia
• Gray Zone Lymphoma
• High Risk Undifferentiated Acute Leukemia
• Hodgkin Disease
• Large Cell Lymphoma
• Leukemia
• Leukemia, Myelogenous, Chronic, BCR-ABL Positive
• Leukemia, Myeloid
• Leukemia, Myeloid, Acute
• Lymphoma
• Lymphoma, Follicular
• Lymphoma, Hodgkin
• Lymphoma, Mantle-Cell
• Lymphoma, Non-Hodgkin
• Lymphoma,Non-Hodgkin
• Mantle-Cell Lymphoma
• Marginal Zone Lymphoma
• Myelodysplastic Syndromes
• Precursor Cell Lymphoblastic Leukemia-Lymphoma

Intervention

Drug:
• Bendamustine
After transplant, given intravenously on day +4 as part of Phase Ib.
• Cyclophosphamide
After transplant, given intravenously on day +3 as part of Phase 1b.

Locations

Country	Name	City	State
United States	The University of Arizona Cancer Center	Tucson	Arizona

Sponsors (1)

Lead Sponsor	Collaborator
University of Arizona

Country where clinical trial is conducted

United States, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Safety in regards to engraftment, incidence and grade of acute and chronic graft-versus-host-disease, graft failure, infections, relapse, and non-relapse mortality post-haploidentical bone marrow transplantation.	Examine the effects of PT-BEN on immune reconstitution following human haploidentical BMT.	Change from baseline to 3 years. Interim analysis will be performed after cohort 3 and cohort 6 in Phase 1, and include preliminary evaluation of treatment and control groups
Secondary	Incidence of regimen-related organ toxicities		Change from baseline to 3 years. Interim analysis will be performed after cohort 3 and cohort 6 in Phase 1, and include preliminary evaluation of treatment and control groups]
Secondary	Incidence of acute GvHD		Change from baseline to 3 years. Interim analysis will be performed after cohort 3 and cohort 6 in Phase 1, and include preliminary evaluation of treatment and control groups]
Secondary	Severity of acute GvHD		Change from baseline to 3 years. Interim analysis will be performed after cohort 3 and cohort 6 in Phase 1, and include preliminary evaluation of treatment and control groups]
Secondary	Incidence of chronic GvHD		Change from baseline to 3 years. Interim analysis will be performed after cohort 3 and cohort 6 in Phase 1, and include preliminary evaluation of treatment and control groups]
Secondary	Extent of chronic GvHD		Change from baseline to 3 years. Interim analysis will be performed after cohort 3 and cohort 6 in Phase 1, and include preliminary evaluation of treatment and control groups]
Secondary	Incidence of graft failure		Change from baseline to 3 years. Interim analysis will be performed after cohort 3 and cohort 6 in Phase 1, and include preliminary evaluation of treatment and control groups]
Secondary	Infection risk	Immune reconstitution will be studied prospectively. Viral and fungal prophylaxis and treatment will be done according to our BMT programs guidelines	Change from baseline to 3 years. Interim analysis will be performed after cohort 3 and cohort 6 in Phase 1, and include preliminary evaluation of treatment and control groups]
Secondary	Infection severity	Immune reconstitution will be studied prospectively. Viral and fungal prophylaxis and treatment will be done according to our BMT programs guidelines	Change from baseline to 3 years. Interim analysis will be performed after cohort 3 and cohort 6 in Phase 1, and include preliminary evaluation of treatment and control groups]
Secondary	Overall patient survival		Change from baseline to 3 years. Interim analysis will be performed after cohort 3 and cohort 6 in Phase 1, and include preliminary evaluation of treatment and control groups]
Secondary	Immune reconstitution following haploidentical BMT	T cell immune reconstitution (CD4, cluster of differentiation 8 (CD8), Treg, NK), B cell and myeloid cell reconstitution will be evaluated serially until 6 months post-BMT	Change from baseline to 3 years. Interim analysis will be performed after cohort 3 and cohort 6 in Phase 1, and include preliminary evaluation of treatment and control groups]
Secondary	Incidence of bacterial, fungal and viral infections/reactivations	Gather data on Incidence of bacterial, fungal and viral infections/reactivations	Change from baseline to 3 years. Interim analysis will be performed after cohort 3 and cohort 6 in Phase 1, and include preliminary evaluation of treatment and control groups]