Autologous CD19 CAR-T Cell Therapy (SYNCAR-001) + Orthogonal IL-2 (STK-009) in Subjects With CD19+ Hematologic Malignancies

NCT ID: NCT05665062

Last Updated: 2025-04-06

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

ACTIVE_NOT_RECRUITING

Clinical Phase

PHASE1

Total Enrollment

36 participants

Study Classification

INTERVENTIONAL

Study Start Date

2023-04-23

Study Completion Date

2026-11-30

Brief Summary

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This is a first-in-human phase 1 study of SYNCAR-001 + STK-009 in patients with CD19+ hematologic malignancies.

Detailed Description

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SYNCAR-001 + STK-009 is a 2-component human orthogonal (ho) IL-2 receptor-ligand cell therapy consisting of (1) SYNCAR-001, a CD19-directed chimeric antigen receptor T cell (CAR-T) co-expressing an engineered IL-2 beta receptor (hoRb); and (2) STK-009, an engineered pegylated IL-2 cytokine (hoIL-2) selective for hoRb. The study will follow a 3+3 design during dose escalation. Cohort A will enroll subjects to SYNCAR-001 + STK-009 with lymphodepletion. At Dose Level 3, a separate dose escalation cohort will be introduced to enroll subjects to SYNCAR-001 + STK-009 without lymphodepletion (Cohort B). Subsequent dose expansions will enroll subjects at the RP2D for each cohort.

Conditions

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CLL/SLL NHL Mantle Cell Lymphoma Follicular Lymphoma Large B-cell Lymphoma Indolent B-Cell Non-Hodgkin Lymphoma Diffuse Large B Cell Lymphoma

Study Design

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Allocation Method

NON_RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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SYNCAR-001 + STK-009 Cohort A

Dose escalation: A single fixed dose of autologous SYNCAR-001 CAR-T intravenously (IV) will be administered in combination with repeated sequential ascending doses of STK-009 subcutaneously (SC)

Dose expansion: A single fixed dose of autologous SYNCAR-001 CAR-T IV will be administered in combination with repeated doses of STK-009 SC at the RP2D

Group Type EXPERIMENTAL

SYNCAR-001

Intervention Type DRUG

SYNCAR-001 is an autologous CD19-targeted CAR-T with co-expression of hoRb

STK-009

Intervention Type DRUG

STK-009 is a human orthogonal IL-2 cytokine selective for SYNCAR-001 CAR-T cells expressing hoRb

Cyclophosphamide

Intervention Type DRUG

lymphodepletion

Fludarabine

Intervention Type DRUG

lymphodepletion

SYNCAR-001 + STK-009 Cohort B

Dose escalation: A single fixed dose of autologous SYNCAR-001 CAR-T intravenously (IV) will be administered in combination with repeated sequential ascending doses of STK-009 subcutaneously (SC)

Dose expansion: A single fixed dose of autologous SYNCAR-001 CAR-T IV will be administered in combination with repeated doses of STK-009 SC at the RP2D

Group Type EXPERIMENTAL

SYNCAR-001

Intervention Type DRUG

SYNCAR-001 is an autologous CD19-targeted CAR-T with co-expression of hoRb

STK-009

Intervention Type DRUG

STK-009 is a human orthogonal IL-2 cytokine selective for SYNCAR-001 CAR-T cells expressing hoRb

Interventions

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SYNCAR-001

SYNCAR-001 is an autologous CD19-targeted CAR-T with co-expression of hoRb

Intervention Type DRUG

STK-009

STK-009 is a human orthogonal IL-2 cytokine selective for SYNCAR-001 CAR-T cells expressing hoRb

Intervention Type DRUG

Cyclophosphamide

lymphodepletion

Intervention Type DRUG

Fludarabine

lymphodepletion

Intervention Type DRUG

Eligibility Criteria

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Inclusion Criteria

1. Histologically confirmed relapsed/refractory hematologic malignancies, including Chronic Lymphocytic Lymphoma (CLL/SLL) and selected Non-Hodgkin's Lymphoma (NHL)
2. Prior or current documentation of CD19 expression or high likelihood of CD19 expression based on disease histology
3. No signs of symptoms of central nervous system (CNS) disease or detectable evidence of CNS or meningeal disease on magnetic resonance imaging (MRI) at the time of screening

Exclusion Criteria

1. Prior CD19 directed therapy including CD19 CARTs
2. Prior allogeneic hematopoietic stem cell transplant within 6 months of enrollment
3. Prior autologous hematopoietic stem cell transplant within 6 weeks of enrollment.
4. Presence of GVHD
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Synthekine

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Locations

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City of Hope

Duarte, California, United States

Site Status

Roswell Park

Buffalo, New York, United States

Site Status

Memorial Sloan Kettering Cancer Center

New York, New York, United States

Site Status

Cleveland Clinic

Cleveland, Ohio, United States

Site Status

Countries

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United States

Other Identifiers

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STK-009-101

Identifier Type: -

Identifier Source: org_study_id

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