A Study to Assess CLBR001+ABBV-461 in Subjects With Locally Advanced or Metastatic Breast Cancer

NCT ID: NCT06878248

Last Updated: 2026-01-20

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

RECRUITING

Clinical Phase

PHASE1

Total Enrollment

20 participants

Study Classification

INTERVENTIONAL

Study Start Date

2025-04-17

Study Completion Date

2028-11-30

Brief Summary

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The goal of this clinical trial is to evaluate CLBR001 and ABBV-461 as a treatment for patients with locally advanced or metastatic breast cancer. The goals are to establish the safety and efficacy of the combination therapy while establishing the optimal biologic doses.

Patients will be administered a single infusion of CLBR001 cells followed by cycles of ABBV-461 with regular assessments of safety and disease response to treatment.

Detailed Description

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CLBR001 + ABBV-461 is novel switchable CAR-T cell combination therapy comprised of an autologous CAR-T product (CLBR001, the switchable CAR-T cell \[sCAR-T\]) and ABBV-461 (the "switch" biologic molecule). ABBV-461 acts as an adapter molecule that controls the activity of the CLBR001 CAR-T cell product.

Conditions

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Breast Cancer Metastatic Locally Advanced Breast Cancer (LABC) Malignant Neoplasm of Breast Triple Negative Breast Cancer (TNBC) Hormone Receptor-Positive Breast Cancer HER2 + Breast Cancer

Study Design

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Allocation Method

NA

Intervention Model

SEQUENTIAL

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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Dose Escalation

Combination product CLBR001 + ABBV461 is administered in ascending dose level cohorts to determine the Optimal Biologic Dose (OBD) of CLBR001 + ABBV-461.

Group Type EXPERIMENTAL

Two Component Product CLBR001 + ABBV-461

Intervention Type BIOLOGICAL

Investigational switchable CAR-T cell therapy for breast cancer

Interventions

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Two Component Product CLBR001 + ABBV-461

Investigational switchable CAR-T cell therapy for breast cancer

Intervention Type BIOLOGICAL

Eligibility Criteria

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Inclusion Criteria

* Refractory or relapsed locally advanced or metastatic breast cancer
* Exhaused all standard of care therapy options
* Measurable disease at time of screening in accordance with RECIST v1.1 criteria
* Women or men age ≥18 years of age at time of consent
* ECOG performance status 0 or 1
* Must provide a biopsy sample obtained during the screening period, following the end of the most recent prior line of therapy
* Adequate hematological, renal, and liver function

Exclusion Criteria

* History of a clinically significant infection within 4 weeks prior to consent
* Active bacterial, viral, and/or fungal infection
* Prior allogeneic stem cell transplant
* Prior lentiviral- or retroviral-based therapy including CAR-T cell therapy
* Prior lymphodepleting or T-cell cytotoxic therapy within 3 months of enrollment
* Subjects receiving attenuated vaccines within 4 weeks of consent or need for live vaccine within 12 months of starting study therapy
* History of significant cardiovascular conditions within the past 6 months
* Subjects with a prior history of or concurrent malignancy whose natural history or treatment has the potential to interfere with either the safety or efficacy assessment of the investigational regimen
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Calibr, a division of Scripps Research

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Amy Lightner, MD

Role: STUDY_DIRECTOR

Calibr-Skaggs Institute for Innovative Medicines

Locations

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Indiana University Melvin and Bren Simon Comprehensive Cancer Center

Indianapolis, Indiana, United States

Site Status RECRUITING

Roswell Park Cancer Institute

Buffalo, New York, United States

Site Status RECRUITING

University of Virginia

Charlottesville, Virginia, United States

Site Status RECRUITING

Fred Hutchinson Cancer Center

Seattle, Washington, United States

Site Status RECRUITING

Countries

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United States

Central Contacts

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Alex Brooks

Role: CONTACT

858-242-1130

Jessica Greene

Role: CONTACT

7163907899

Facility Contacts

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Kathy D Miller, MD

Role: primary

317-944-0920

Anuradha Krishnamurthy, MBBS

Role: primary

716-845-1300 ext. 6703

Laura Ryan

Role: backup

716-845-2300

Patrick Dillon, MD

Role: primary

434-924-9333

Ashley Donihee

Role: backup

434-409-5009

Jennifer Specht, MD

Role: primary

206-606-1024

Monica Dherin

Role: backup

206-606-1024

Other Identifiers

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CBR-sCAR461-3001

Identifier Type: -

Identifier Source: org_study_id

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