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Withdrawn Phase 1Phase 2 Interventional

A Study of a New Drug Combination, Copanlisib and Fulvestrant, in Advanced Breast Cancer

ClinicalTrials.gov ID: NCT03803761

Public ClinicalTrials.gov record NCT03803761. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.

ClinicalTrials.gov public records Last synced Sep 9, 2026, 9:24 PM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Official title

A Phase 2 Study of Copanlisib (BAY 80-6946) in Combination With Fulvestrant in Patients With Metastatic Breast Cancer Progressing After Aromatase Inhibitor Plus CDK 4/6 Inhibitor

Brief summary

Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.

This phase I/II trial studies the side effects and how well copanlisib works when given together with fulvestrant in treating patients with estrogen receptor positive (ER+) and human epidermal growth factor receptor 2 negative (HER2-) breast cancer that has spread to other places in the body (advanced) and progressing after prior treatment. HER2 and ER are two types of proteins called receptors that can affect the growth of breast cancer cells. Additionally, investigators hope to learn from this study if tumor genetic information is important for predicting whether this type of breast cancer will respond to fulvestrant and copanlisib. Copanlisib may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth. Hormone therapy using fulvestrant may fight breast cancer by blocking the use of estrogen by the tumor cells. Giving copanlisib and fulvestrant may work better in treating patients with ER+ and HER2- breast cancer compared to fulvestrant alone.

Study identification

NCT ID
NCT03803761
Recruitment status
Withdrawn
Study type
Interventional
Phase
Phase 1, Phase 2
Enrollment
Not listed

Conditions and interventions

Eligibility (public fields only)

Age range
18 Years and older
Sex
All
Healthy volunteers
Healthy volunteers not accepted

This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.

Study timeline

Start date
Feb 12, 2019
Primary completion
Feb 18, 2022
Completion
Feb 18, 2022
Last update posted
Sep 24, 2023

2019 – 2022

United States locations

U.S. sites
7
U.S. states
7
U.S. cities
7
Facility City State ZIP Site status
University of California Davis Comprehensive Cancer Center Sacramento California 95817
Beth Israel Deaconess Medical Center Boston Massachusetts 02215
NYP/Weill Cornell Medical Center New York New York 10065
UNC Lineberger Comprehensive Cancer Center Chapel Hill North Carolina 27599
Ohio State University Comprehensive Cancer Center Columbus Ohio 43210
University of Texas Medical Branch Galveston Texas 77555-0565
Virginia Commonwealth University/Massey Cancer Center Richmond Virginia 23298

Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.

About this trial record page

What this page shows
Public field values for ClinicalTrials.gov record NCT03803761, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
What this page does not do
No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
Where the data comes from
Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
Last refresh
Last update posted Sep 24, 2023 · Synced Sep 9, 2026

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Open the official record

The complete protocol, eligibility criteria, and contact information for NCT03803761 live on ClinicalTrials.gov.

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