Study to Evaluate the Safety and Antitumor Activity of CX-2009 Monotherapy and in Combination With CX-072 in Advanced Breast Cancer

NCT ID: NCT04596150

Last Updated: 2024-01-23

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

COMPLETED

Clinical Phase

PHASE2

Total Enrollment

125 participants

Study Classification

INTERVENTIONAL

Study Start Date

2020-12-29

Study Completion Date

2023-06-02

Brief Summary

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A Phase 2, clinical study in advanced, metastatic breast cancer that will evaluate CX-2009 monotherapy in both Hormone Receptor(HR) positive/HER2 negative breast cancer and in TNBC, and evaluate CX-2009+CX-072 in TNBC

Detailed Description

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Eligible patients will be enrolled to the treatment arm based on breast cancer subtype.

Patients will receive study treatment on Day 1 of a Q3W cycle. Treatment with CX-2009 monotherapy (Arms A and B) or CX-2009 in combination with CX-072 (Arm C) will be given until disease progression or symptomatic deterioration, unacceptable toxicity necessitating treatment discontinuation, or if the patient meets certain study defined criteria for discontinuation. On-treatment tumor assessments, will occur every 6 weeks per RECIST v1.1 for the first 48 weeks, and every 12 weeks thereafter.

Conditions

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Neoplasms Breast Neoplasms Breast Neoplasms, Triple-Negative Breast Cancer Breast Neoplasms, Hormone Receptor Positive/HER2 Negative

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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ARM A - CX-2009 Monotherapy, HR-positive/HER2-negative

CX-2009 Monotherapy in advanced, metastatic Hormone Receptor (HR)-positive / Human Epidermal growth factor Receptor 2 (HER2)-negative breast cancer

Group Type EXPERIMENTAL

CX-2009

Intervention Type DRUG

Intravenous administration of the CX-2009 of 6 mg/kg administered every 3 weeks (Q3W)

ARM B - CX-2009 Monotherapy, TNBC

CX-2009 Monotherapy in advanced, metastatic Triple-Negative Breast Cancer (TNBC)

Group Type EXPERIMENTAL

CX-2009

Intervention Type DRUG

Intravenous administration of the CX-2009 of 6 mg/kg administered every 3 weeks (Q3W)

ARM C - CX-2009 Combination therapy, TNBC

CX-2009 and CX-072 Combination therapy in advanced, metastatic TNBC

Group Type EXPERIMENTAL

CX-2009

Intervention Type DRUG

Intravenous administration of the CX-2009 of 6 mg/kg administered every 3 weeks (Q3W)

CX-072

Intervention Type DRUG

Intravenous administration of the CX-072 of 1200 mg administered every 3 weeks (Q3W)

Interventions

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CX-2009

Intravenous administration of the CX-2009 of 6 mg/kg administered every 3 weeks (Q3W)

Intervention Type DRUG

CX-072

Intravenous administration of the CX-072 of 1200 mg administered every 3 weeks (Q3W)

Intervention Type DRUG

Eligibility Criteria

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Inclusion Criteria

* Arm A: inoperable, locally advanced or metastatic HR-positive/HER2-negative breast cancer. Patients must have received 0 to 2 prior cytotoxic chemotherapy in the inoperable, locally advanced, or metastatic setting
* Arm B and Arm C: inoperable, locally advanced or metastatic TNBC; archival or fresh tumor tissue must have high CD166 expression by immunohistochemistry (IHC). Patients must have received 1 - 3 prior lines of therapy for inoperable, locally advanced, or metastatic TNBC
* Arm C only: Patients must be Programmed Death Ligand 1 (PD-L1) positive by an FDA-approved test. For patients who have received prior checkpoint inhibitors (CPI) therapy: if the CPI was the most recent treatment given prior to enrollment into this study, the patient must not have progressed within 120 days of the first dose of the CPI
* Measurable disease per RECIST v1.1
* Adults, at least 18 years of age
* Eastern Cooperative Oncology Group performance status of 0 or 1
* Adequate baseline Laboratory Values
* Patients of childbearing potential or those with partners of childbearing potential must agree to use a highly effective method of birth control at least 1 month prior to first dose, during study treatment, and for a period of 50 days after the last dose of CX-2009 and 105 days after the last dose of CX-072 (Arm C).
* Patients with brain metastases that are ≤ 1 cm, are asymptomatic, and require no treatment may be eligible after discussion with Medical Monitor.

Exclusion Criteria

* History of malignancy that was active within the previous 2 years. Exceptions include localized cancers that are not related to the current cancer being treated, that are considered to have been cured, and in the opinion of the Investigator present a low risk for recurrence
* Untreated symptomatic brain and/or leptomeningeal metastases
* Unresolved prior therapy-related acute toxicity Grade \> 1, including neuropathy. Alopecia and other nonacute toxicities are not exclusionary
* Active or chronic corneal disorder
* Serious concurrent illness
* History of allogeneic tissue/solid organ transplant, stem cell transplant, or bone marrow transplant
* Arm C only:

* History of or current active autoimmune diseases
* History of myocarditis regardless of the cause
* History of intolerance to prior immune CPI therapy defined as the need to discontinue treatment due to an immune-related Adverse Event (AE)
* Immunosuppressive therapy including chronic systemic steroid (≥ 10 mg daily prednisone equivalents) within 14 days of Cycle 1 Day 1 (C1D1). However, patients who require brief courses of steroids (eg, as prophylaxis for IV contrast or for treatment of an allergic reaction) may be eligible with Medical Monitor approval. Inhaled or topical steroids are permitted.
* History of severe allergic or anaphylactic reactions to previous monoclonal antibody (mAb) therapy or known hypersensitivity to any component of Probody therapeutic
* Prior treatment with maytansinoid-containing drug conjugates (eg, DM1 or DM4 antibody drug conjugate, including trastuzumab emtansine)
* Pregnant or breastfeeding
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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CytomX Therapeutics

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Monika Vainorius, M.D.

Role: STUDY_DIRECTOR

CytomX Therapeutics

Locations

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Moores Cancer Center

La Jolla, California, United States

Site Status

Los Angeles Hematology Oncology Medical

Los Angeles, California, United States

Site Status

USC Norris Cancer Center

Los Angeles, California, United States

Site Status

UCLA David Geffen

Santa Monica, California, United States

Site Status

Rocky Mountain Cancer Centers

Lone Tree, Colorado, United States

Site Status

FCS - South

Fort Myers, Florida, United States

Site Status

Baptist Medical Center

Jacksonville, Florida, United States

Site Status

Hematology Oncology Assoc of the Treasure Coast

Port Saint Lucie, Florida, United States

Site Status

FCS - North

St. Petersburg, Florida, United States

Site Status

University of Chicago Medical Center

Chicago, Illinois, United States

Site Status

Indiana University Health Melvin and Bren Simon Cancer Center

Indianapolis, Indiana, United States

Site Status

Hematology Oncology Clinic

Baton Rouge, Louisiana, United States

Site Status

University of Maryland

Baltimore, Maryland, United States

Site Status

MGH

Boston, Massachusetts, United States

Site Status

DRCI

Boston, Massachusetts, United States

Site Status

Allina Health System

Minneapolis, Minnesota, United States

Site Status

Nebraska Cancer Specialists

Omaha, Nebraska, United States

Site Status

Montefiore Medical Center

The Bronx, New York, United States

Site Status

Cleveland Clinic

Cleveland, Ohio, United States

Site Status

UPMC Magee-Womens Hospital

Pittsburgh, Pennsylvania, United States

Site Status

MUSC

Charleston, South Carolina, United States

Site Status

Tennessee Oncology

Nashville, Tennessee, United States

Site Status

UT Health East Texas HOPE Cancer Center

Tyler, Texas, United States

Site Status

Huntsman Cancer Institute Research

Salt Lake City, Utah, United States

Site Status

Virginia Cancer Specialists

Fairfax, Virginia, United States

Site Status

Summit Cancer Centers

Spokane, Washington, United States

Site Status

University of Wisconsin

Madison, Wisconsin, United States

Site Status

Soon Chun Hyang University Cheonan Hospital SCHMC

Cheonan, , South Korea

Site Status

Gachon University Gil Medical Center

Incheon, , South Korea

Site Status

Seoul National University Bundang Hospital

Seongnam-si, , South Korea

Site Status

Korea University Anam Hospital

Seoul, , South Korea

Site Status

Asan Medical Center

Seoul, , South Korea

Site Status

Gangnam Severance Hospital

Seoul, , South Korea

Site Status

Samsung Medical Center

Seoul, , South Korea

Site Status

Hospital Clinic i Provincial de Barcelona

Barcelona, , Spain

Site Status

Vall d'Hebron University Hospital

Barcelona, , Spain

Site Status

Institut Catala Oncologia

Barcelona, , Spain

Site Status

Hospital Universitario Ramn y Cajal

Madrid, , Spain

Site Status

Hospital Universitario HM Sanchinarro

Madrid, , Spain

Site Status

NEXT Oncology

Madrid, , Spain

Site Status

Hospital Parc Tauli

Sabadell, , Spain

Site Status

Hospital Clinico Universitario de Valencia

Valencia, , Spain

Site Status

Countries

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United States South Korea Spain

Other Identifiers

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2020-004618-36

Identifier Type: EUDRACT_NUMBER

Identifier Source: secondary_id

CTMX-2009-002

Identifier Type: -

Identifier Source: org_study_id

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