RecruitingPhase 1Phase 2NCT06827236

A Clinical Study to Find the Optimal Dose of an Investigational Treatment Called BNT323 When Used in Combination With Another Investigational Treatment, BNT327, and to Test if That Combination Treatment is Safe and Beneficial for Patients With Advanced Breast Cancer

A Phase I/II, Multi-site, Open-label, Two-part Trial to Evaluate the Efficacy, Safety, and Pharmacokinetics of BNT323 in Combination With BNT327 in Participants With Advanced Breast Cancer


Sponsor

BioNTech SE

Enrollment

380 participants

Start Date

Apr 23, 2025

Study Type

INTERVENTIONAL

Conditions

Summary

This is a Phase I/II, multi-site, open-label, two-part study designed to evaluate the efficacy, safety, optimized dose and contribution of components of BNT323 in combination with BNT327 in participants with hormone receptor-positive (HR+) or hormone receptor-negative (HR-), Human epidermal growth factor receptor (HER)2-positive, HER2-low (immunohistochemistry \[IHC\] 1+ or IHC 2+/in situ hybridization -), HER2-ultralow (IHC 0, with membrane staining) or HER2-null breast cancer (BC), or triple-negative breast cancer (TNBC).


Eligibility

Min Age: 18 Years

Plain Language Summary

Simplified for easier understanding

This study is testing two experimental treatments — BNT323 (an antibody-drug that targets a protein called HER2) and BNT327 (an immunotherapy) — in combination, for people with advanced breast cancer. The goal is to find the right dose and check if the combination is safe and effective. **You may be eligible if...** - You have breast cancer that has spread or cannot be surgically removed - Your tumor has been tested for HER2 status (a protein linked to cancer growth) - Your tumor falls into one of these categories: HER2-positive, HER2-low, HER2-ultralow, HER2-null, or triple-negative breast cancer (TNBC) - You have at least one measurable tumor on a scan - Your heart is pumping normally (ejection fraction of 55% or above) **You may NOT be eligible if...** - You were hospitalized for a bowel obstruction in the past 3 months - You have an uncontrolled serious illness - You have significant fluid build-up in the lungs, belly, or heart requiring drainage - You have had serious lung inflammation (pneumonitis/ILD) that needed steroid treatment - You have previously received a type of chemotherapy called topoisomerase I inhibitors, including antibody-drug conjugates like trastuzumab deruxtecan Talk to your doctor to see if this trial is right for you.

This summary was AI-generated to explain the trial in plain language. It is not medical advice. Always discuss eligibility with your doctor before enrolling in a clinical trial.

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Interventions

DRUGBNT323

Intravenous infusion

DRUGBNT327

Intravenous infusion


Locations(39)

Beverly Hills Cancer Center

Beverly Hills, California, United States

Hematology - Oncology Associates of the Treasure Coast

Port Saint Lucie, Florida, United States

Winship Cancer Institute of Emory University

Atlanta, Georgia, United States

START Midwest, LLC

Grand Rapids, Michigan, United States

Saint Luke's Hospital of Kansas City

Kansas City, Missouri, United States

Washington University School of Medicine

St Louis, Missouri, United States

Summit Medical Group

Florham Park, New Jersey, United States

Memorial Sloan Kettering Hospital

New York, New York, United States

South Texas Accelerated Research Therapeutics (START), LLC

San Antonio, Texas, United States

Sunnybrook Health Sciences Centre

Toronto, Canada

The First Affiliated Hospital of Bengbu Medical College

Bengbu, China

Jilin Cancer Hospital

Changchun, China

Sichuan Cancer Hospital

Chengdu, China

Sichuan Provincial People's Hospital

Chengdu, China

The First Affiliated Hospital of Chongqing Medical University

Chongqing, China

Huizhou First Hospital

Huizhou, China

Guangxi Medical University Affiliated Tumor Hospital

Nanning, China

Fudan University Shanghai Cancer

Shanghai, China

The Second Affiliated Hospital of Xi an Jiaotong University

Xi'an, China

Clinique Victor Hugo - Centre Jean Bernard

Le Mans, France

Institut Claudius Regaud

Toulouse, France

LLC Arensia Exploratory Medicine

Tbilisi, Georgia

Institute of Oncology Arensia Exploratory Medicine

Chisinau, Moldova

Medical Park Seyhan Hospital

Adana, Turkey (Türkiye)

Adana City Hospital

Adana, Turkey (Türkiye)

Hacettepe University Medical Faculty

Ankara, Turkey (Türkiye)

Dr Abdurrahman Yurtaslan Ankara Oncology Training and Research Hospital

Ankara, Turkey (Türkiye)

Ankara City Hospital

Ankara, Turkey (Türkiye)

Yeditepe Universitesi Kosuyolu Hastanesi

Istanbul, Turkey (Türkiye)

Koc University Hospital

Istanbul, Turkey (Türkiye)

IAU Medical Park Florya Hospital

Istanbul, Turkey (Türkiye)

Konya Necmettin Erbakan University Meram Medical Faculty

Konya, Turkey (Türkiye)

Mersin City Education and Research Hospital

Mersin, Turkey (Türkiye)

Addenbrooke s Hospital

Cambridge, United Kingdom

Velindre Cancer Centre

Cardiff, United Kingdom

St James's University Hospital

Leeds, United Kingdom

Royal Free Hospital

London, United Kingdom

The Christie Hospital

Manchester, United Kingdom

Royal Marsden Hospital-Sutton

Sutton, United Kingdom

View Full Details on ClinicalTrials.gov

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NCT06827236


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