A Study of IMPT-514 in Active Refractory Lupus Nephritis (LN) and Systemic Lupus Erythematosus (SLE)

NCT ID: NCT06153095

Last Updated: 2025-02-10

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

WITHDRAWN

Clinical Phase

PHASE1/PHASE2

Study Classification

INTERVENTIONAL

Study Start Date

2024-02-15

Study Completion Date

2025-01-09

Brief Summary

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This is a Phase 1/2, multi-center, open-label study evaluating the safety and efficacy of IMPT-514, a bispecific chimeric antigen receptor (CAR) targeting cluster of differentiation (CD)19 and CD20 in participants with active, refractory lupus nephritis and systemic lupus erythematosus.

IMPT-514 treatment consists of a single infusion of CAR-transduced autologous T cells administered intravenously after a lymphodepleting therapy regimen consisting of fludarabine and cyclophosphamide. Individual participants will remain in the active post-treatment period for approximately 1 year.

Participants will continue in long-term follow-up for 15 years from treatment.

Detailed Description

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Conditions

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Systemic Lupus Erythematosus Lupus Nephritis

Study Design

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Allocation Method

NON_RANDOMIZED

Intervention Model

SINGLE_GROUP

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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Phase 1 Lupus Nephritis

Administration of IMPT-514

Group Type EXPERIMENTAL

IMPT-514

Intervention Type BIOLOGICAL

CAR T-cell therapy administered intravenously after a lymphodepleting therapy regimen consisting of fludarabine and cyclophosphamide

Phase 2 Lupus Nephritis

Administration of IMPT-514

Group Type EXPERIMENTAL

IMPT-514

Intervention Type BIOLOGICAL

CAR T-cell therapy administered intravenously after a lymphodepleting therapy regimen consisting of fludarabine and cyclophosphamide

Phase 2 SLE without Lupus Nephritis

Administration of IMPT-514

Group Type EXPERIMENTAL

IMPT-514

Intervention Type BIOLOGICAL

CAR T-cell therapy administered intravenously after a lymphodepleting therapy regimen consisting of fludarabine and cyclophosphamide

Interventions

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IMPT-514

CAR T-cell therapy administered intravenously after a lymphodepleting therapy regimen consisting of fludarabine and cyclophosphamide

Intervention Type BIOLOGICAL

IMPT-514

CAR T-cell therapy administered intravenously after a lymphodepleting therapy regimen consisting of fludarabine and cyclophosphamide

Intervention Type BIOLOGICAL

IMPT-514

CAR T-cell therapy administered intravenously after a lymphodepleting therapy regimen consisting of fludarabine and cyclophosphamide

Intervention Type BIOLOGICAL

Eligibility Criteria

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Inclusion Criteria

1. Willing and able to provide written informed consent
2. Age 18 years of age or older
3. Weight \> 45 kg at enrollment
4. Adequate blood pressure control
5. On stable background therapy for autoimmune disease (LN, SLE) with stable dose of autoimmune disease medications for at least 4 weeks prior to screening
6. Diagnosis of SLE by 2019 European League Against Rheumatism (EULAR)/American College of Rheumatology (ACR) classification criteria or 2012 Systemic Lupus Collaborating Clinics (SLICC) criteria, including positive ANA or positive anti-dsDNA
7. Positive anti-nuclear antibody (ANA), anti-dsDNA (double stranded DNA) or anti-Smith antibody at screening
8. SLE participants: SLEDAI-2K ≥ 6 points, with at least 4 points on clinical, non-laboratory items
9. SLE participants: British Isles Lupus Assessment Group (BILAG) 2004 level B in 2 or more organ systems, or BILAG level A in 1 or more organ system
10. Physician Global assessment ≥ 1 on 0 to 3 visual analogue scale (VAS)
11. LN participants: Active, biopsy-proven, proliferative LN Class III or IV by 2018 International Society of Nephrology/Renal Pathology Society (ISN/RPS) criteria

Other protocol-defined criteria apply.

Exclusion Criteria

1. Any clinically significant underlying illness, other than SLE and LN, which would pose a safety risk or concern, as determined by the Investigator
2. Any other systemic autoimmune condition
3. Rapidly progressive glomerulonephritis
4. Active central nervous system (CNS) lupus
5. History of allogeneic bone marrow or stem cell transplantation or solid organ transplantation
6. History of prior B cell directed cell therapy, including CAR T treatment, autologous or allogeneic, as well as prior bispecific or T cell engager therapy
7. Drug-induced SLE

Other protocol-defined criteria apply.
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Lyell Immunopharma, Inc.

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Locations

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University of California, Los Angeles (UCLA) Medical Center

Los Angeles, California, United States

Site Status

University of California San Francisco

San Francisco, California, United States

Site Status

University of Iowa

Iowa City, Iowa, United States

Site Status

Westmead Hospital

Westmead, , Australia

Site Status

Countries

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United States Australia

Other Identifiers

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MPCT-021N

Identifier Type: -

Identifier Source: org_study_id

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