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HA-1 T TCR T Cell Immunotherapy for the Treatment of Patients With Relapsed or Refractory Acute Leukemia After Donor Stem Cell Transplant

Phase I Study of Adoptive Immunotherapy With CD8+ and CD4+ Memory T Cells Transduced to Express an HA-1-Specific T Cell Receptor (TCR) for Children and Adults With Recurrent Acute Leukemia After Allogeneic Hematopoietic Stem Cell Transplantation (HCT)

Status
Recruiting
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03326921
Enrollment
24
Registered
2017-10-31
Start date
2018-02-23
Completion date
2028-07-16
Last updated
2026-05-18

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Acute Biphenotypic Leukemia, Acute Lymphoblastic Leukemia, Acute Myeloid Leukemia, Acute Undifferentiated Leukemia, Blast Phase Chronic Myeloid Leukemia, BCR-ABL1 Positive, Chronic Myeloid Leukemia, Chronic Myeloid Leukemia, BCR-ABL1 Positive, Chronic Myelomonocytic Leukemia, Juvenile Myelomonocytic Leukemia, Leukemia, Minimal Residual Disease, Mixed Phenotype Acute Leukemia, Myelodysplastic Syndrome, Recurrent Acute Biphenotypic Leukemia, Recurrent Acute Lymphoblastic Leukemia, Recurrent Acute Myeloid Leukemia, Recurrent Acute Undifferentiated Leukemia, Recurrent Blastic Plasmacytoid Dendritic Cell Neoplasm, Recurrent Childhood Acute Lymphoblastic Leukemia, Recurrent Childhood Acute Myeloid Leukemia, Recurrent Chronic Myeloid Leukemia, BCR-ABL1 Positive, Recurrent Chronic Myelomonocytic Leukemia, Recurrent Mixed Phenotype Acute Leukemia, Recurrent Myelodysplastic Syndrome, Refractory Acute Lymphoblastic Leukemia, Refractory Adult Acute Lymphoblastic Leukemia, Refractory Blastic Plasmacytoid Dendritic Cell Neoplasm, Refractory Chronic Myeloid Leukemia, BCR-ABL1 Positive, Refractory Myelodysplastic Syndrome

Keywords

HA-1, TCR, Immunotherapy, Leukemia

Brief summary

This phase I trial studies the side effects and best dose of CD4+ and CD8+ HA-1 T cell receptor (TCR) (HA-1 T TCR) T cells in treating patients with acute leukemia that persists, has come back (recurrent) or does not respond to treatment (refractory) following donor stem cell transplant. T cell receptor is a special protein on T cells that helps them recognize proteins on other cells including leukemia. HA-1 is a protein that is present on the surface of some peoples' blood cells, including leukemia. HA-1 T cell immunotherapy enables genes to be added to the donor cells to make them recognize HA-1 markers on leukemia cells.

Detailed description

OUTLINE: This is a dose-escalation study of CD4+ and CD8+ HA-1 TCR T cells. Patients receive lymphodepleting chemotherapy (e.g., fludarabine and cyclophosphamide or debulking regimens as specified in the protocol) ending 2-14 days prior to HA-1 TCR T cell administration. Patients then receive CD4+ and CD8+ HA-1 TCR T cells intravenously (IV). After completion of study treatment, patients are followed up closely for 12 weeks and then every 6 months for years 1-5, and every year for years 6-15. Initial study activity was funded in part by HighPass Bio, Inc. Current study activity is funded in part by PromiCell Therapeutics, Inc.

Interventions

BIOLOGICALCD8+ and CD4+ Donor Memory T-cells-expressing HA1-Specific TCR

Given IV

PROCEDUREBone Marrow Aspiration

Undergo bone marrow aspiration

PROCEDUREBiospecimen Collection

Undergo blood sample collection

Sponsors

Fred Hutchinson Cancer Center
Lead SponsorOTHER
HighPass Bio, Inc.
CollaboratorUNKNOWN
PromiCell Therapeutics, Inc.
CollaboratorUNKNOWN

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
No minimum to 80 Years
Healthy volunteers
No

Inclusion criteria

* Subject age 0-80 years at the time of enrollment. * Subject must express HLA-A\*0201 * Subject must have the HA-1(H) genotype (RS\_1801284: A/G, A/A) * Subject must have an adult donor for HCT who is adequately HLA matched by institutional standards (includes HLA-matched related or unrelated donors, and HLA-mismatched family donors, including haploidentical donors) and is either: * HLA-A\*0201 positive and HA-1(H) negative (RS\_1801284: G/G) or * HLA-A\*0201 negative * Subjects who are currently undergoing or who previously underwent allogeneic HCT for * Acute myeloid leukemia (AML) of any subtype * Acute lymphoid leukemia (ALL) of any subtype * Mixed phenotype/undifferentiated/any other type of acute leukemia, including blastic plasmacytoid dendritic cell neoplasm * Chronic myeloid leukemia with a history of blast crisis and: * With relapse or refractory disease (\>= 5% marrow blasts, or circulating blasts) at any time after HCT * With persistent rising minimal residual disease (defined as detectable disease by morphology, flow cytometry, molecular or cytogenetic testing but \< 5% marrow blasts by morphology, no circulating blasts on \>= 2 of two consecutive tests), refractory or ineligible for treatment with tyrosine kinase inhibitors at any time after HCT * Myelodysplastic syndrome (MDS) of any subtype * Chronic myelomonocytic leukemia (CMML) * Juvenile myelomonocytic leukemia (JMML) * Subjects must be able to understand and be willing to give informed consent; decision-impaired adults may consent with their legally authorized representative; parent or legal representative will be asked to consent for subjects younger than 18 years old * Subjects must agree to participate in long-term follow-up for up to 15 years if they are enrolled in the study and receive T cell infusion * Subjects who have relapsed or have MRD after HCT may receive other agents for treatment of disease and remain eligible for the protocol * A specific performance status score is not required for enrolling on the protocol; a delay in infusion of the HA-1 TCR T cells may be required for subjects with low performance status DONOR SELECTION INCLUSION * Donor age \>= 18 years * Donors must be able to give informed consent

Exclusion criteria

* Medical or psychological conditions that would make the subject unsuitable candidate for cell therapy at the discretion of the principal investigator (PI) * Fertile subjects unwilling to use contraception during and for 12 months after treatment * Subjects with a life expectancy of \< 3 months of enrollment from coexisting disease other than leukemia * Subjects who have ongoing grade IV acute GVHD or severe chronic GVHD following most recent transplant. Exception: the principal investigator (PI) may make an exception on a case-by-case basis to include such a subject if there is doubt surrounding the GVHD diagnosis and/or sustained significant improvement in GVHD severity * The presence of organ toxicities will not necessarily exclude subjects from enrolling on the protocol at the discretion of the PI; however, a delay in the infusion of HA-1 TCR T cells may be required DONOR SELECTION EXCLUSION * Donors who are human immunodeficiency virus (HIV)-1, HIV-2, human T-lymphotropic virus (HTLV)-1, HTLV-2 seropositive or with active hepatitis B or hepatitis C virus infection * Unrelated donor residing outside of the United States of America (USA) unless the donor screening, testing and leukapheresis occur at an National Marrow Donor Program (NMDP)-affiliated and qualified donor center and are facilitated by the NMDP

Design outcomes

Primary

MeasureTime frameDescription
Feasibility of manufacturing minor H antigen (HA-1) T cell receptor (TCR) CD8+ and CD4+ T cellsAt time of T cell infusion (at day 0)Proportion of subjects for whom a HA-1 TCR T cell product can be produced.
Feasibility of administering minor H antigen (HA-1) T cell receptor (TCR) CD8+ and CD4+ T cellsAt time of T cell infusion (at day 0)Proportion of subjects for whom a HA-1 TCR T cell product can be administered.
Incidence of dose-limiting toxicities of HA-1 T cell receptor (TCR) T cellsUp to 12 weeks after T-cell infusionToxicities will be graded according to the National Cancer Institute (NCI) Common Terminology Criteria for Adverse Events (CTCAE) version 4.

Secondary

MeasureTime frameDescription
Duration of in vivo persistence of transferred HA-1 T cell receptor (TCR) CD4+ T cells in peripheral bloodUp to 1 yearEvaluated by tetramer and/or molecular tracking e.g. quantitative polymerase chain reaction (qPCR).
Duration of in vivo persistence of transferred HA-1 T cell receptor (TCR) CD8+ T cells in peripheral bloodUp to 1 yearEvaluated by tetramer and/or molecular tracking e.g. qPCR.
Presence, proportion and persistence of HA-1 T cell receptor (TCR) CD4+ T cells in the bone marrowUp to 1 yearEvaluated by tetramer and/or molecular tracking e.g. qPCR.
Presence, proportion and persistence of HA-1 T cell receptor (TCR) CD8+ T cells in the bone marrowUp to 1 yearEvaluated by tetramer and/or molecular tracking e.g. qPCR.
Specific cytolytic activity of HA-1 T cell receptor (TCR) CD8+ and CD4+ T cells against HLA-A*0201+ HA-1+ target cells before adoptive T cell transferAt the time of T cell infusion (at day 0)Assessed by in vitro chromium release assay or equivalent cytotoxicity assay.
Specific cytolytic activity of HA-1 T cell receptor (TCR) CD8+ and CD4+ T cells against HLA-A*0201+ HA-1+ target cells after adoptive T cell transferUp to 1 yearBy in vitro chromium release assay or flow cytometric degranulation assay (CD107a) using samples of peripheral blood and/or bone marrow collected from subjects after adoptive T cell transfer.
Reduction of leukemia in the bone marrow in subjects who have measurable leukemia in the marrow prior to HA-1 T cell receptor (TCR) T cell infusionUp to 1 yearQuantified by flow cytometry to determine percentage of leukemic cells in the marrow.
Reduction of recipient normal hematopoietic cells in the bone marrow in subjects who have measurable recipient normal hematopoietic cells in the marrow prior to HA-1 T cell receptor (TCR) T cell infusionUp to 1 yearQuantified by variable number tandem repeat (VNTR) to determine percentage of normal recipient and donor cells in the marrow.
Proportion of subjects who develop new or recurrent symptoms or signs of graft-versus-host diseaseUp to 1 yearAssessed using clinical evaluation and standard clinical graft versus host disease (GVHD) grading criteria

Countries

United States

Contacts

CONTACTFHCC Immunotherapy Intake
immunotherapy@fredhutch.org206-606-4668
PRINCIPAL_INVESTIGATORElizabeth Krakow

Fred Hutch/University of Washington Cancer Consortium

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: May 19, 2026