Testing the Addition of Copanlisib to Eribulin in Metastatic Triple Negative Breast Cancer

A Phase I/II Trial Evaluating the Safety and Efficacy of Eribulin in Combination With Copanlisib in Patients With Metastatic Triple Negative Breast Cancer

This phase I/II trial studies the side effects and best dose of copanlisib and how well it works when given together with eribulin in treating patients with triple negative breast cancer that has spread from where it first started (primary site) to other places in the body (metastatic). Copanlisib may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth. Chemotherapy drugs, such as eribulin, work in different ways to stop the growth of tumor cells, either by killing the cells, by stopping them from dividing, or by stopping them from spreading. Giving copanlisib and eribulin together may work better in treating advanced stage triple negative breast cancer compared to eribulin alone.

Study Overview

• Status: Active, not recruiting
• Conditions: Anatomic Stage III Breast Cancer AJCC v8; Anatomic Stage IV Breast Cancer AJCC v8; Metastatic Triple-Negative Breast Carcinoma; Unresectable Triple-Negative Breast Carcinoma
• Intervention / Treatment: Procedure: Magnetic Resonance Imaging; Drug: Copanlisib Hydrochloride; Procedure: Biospecimen Collection; Procedure: Computed Tomography; Drug: Eribulin Mesylate; Procedure: Biopsy Procedure

Detailed Description

PRIMARY OBJECTIVES:

I. To determine the safety, toxicity profile, dose limiting toxicity (DLT), maximum tolerated dose (MTD) and recommended phase 2 dose (RP2D) of copanlisib hydrochloride (copanlisib) in combination with eribulin mesylate (eribulin) in metastatic triple negative breast cancer (TNBC). (Phase I) II. To compare progression free survival (PFS) between eribulin and eribulin plus copanlisib arms in patients with metastatic TNBC treated with prior taxane and anthracycline. (Phase II)

SECONDARY OBJECTIVES:

I. To determine the objective response rate (ORR) and clinical benefit rate (CBR) of the combination. (Phase I) II. To observe and record anti-tumor activity. (Phase I) III. To compare the ORR, CBR (complete response [CR]+partial response [PR]+stable disease [SD] >= 24 weeks) and safety of eribulin and eribulin plus copanlisib arms. (Phase II)

EXPLORATORY OBJECTIVES:

I. To compare PTEN (immunohistochemistry) IHC results between paired baseline tumor biopsy versus at time of disease progression.

II. Assess baseline (pre-treatment) tumor tissue mutation or gene expression profiles to correlate treatment response.

III. Assess intrinsic and adaptive resistance mechanisms by analyzing pre and post treatment biopsies for gene expression and proteomic changes.

IV. Determine circulating tumor DNA (ctDNA) mutation profiles at baseline and changes in mutation profile and variant allele frequencies (VAFs) on cycle 2 day 1 (C2D1) and at disease progression compared to baseline to correlate with treatment response.

V. Assess circulating biomarkers predictive of treatment response. VI. Assess plasma and serum proteomics and metabolomics predictive of treatment response.

VII. To compare the ORR, CBR, PFS of eribulin and eribulin plus copanlisib arms in patients with tumors harboring mutations in PIK3CA/ PTEN or with loss of PTEN expression by IHC on baseline tumor biopsy.

VIII. To compare the ORR, CBR, PFS of eribulin and eribulin plus copanlisib arms in patients with tumors lacking PIK3CA/ PTEN pathway alterations.

IX. To compare the ORR, CBR, PFS of eribulin and eribulin plus copanlisib arms in patients with tumors harboring loss of PTEN expression by IHC in pre-treatment metastatic site (in patients with available tissue from metastatic site).

X. To compare PTEN IHC results between paired archival primary tumor versus (vs.) baseline tumor biopsies.

XI. To assess targeted inhibition by copanlisib and eribulin by measuring treatment induced changes in phosphorylated (phospho)-AKT (T308), phospho-AKT (S473), phospho-histone H3, and inhibition of apoptosis (cleaved caspase 3) between post-treatment tumor (C2D1-2) versus baseline.

XII. To compare the ORR, CBR, PFS of eribulin and eribulin plus copanlisib arms in patients with tumors harboring mutations in PIK3CA/PTEN by circulating tumor deoxyribonucleic acid (ctDNA) at baseline, and potential changes over time.

OUTLINE: This is a phase I dose-escalation study of copanlisib and eribulin followed by a phase II study. Patients are randomized to 1 of 2 groups.

Phase I, DL1: Patients receive copanlisib (45 mg) intravenously (IV) over 1 hour and eribulin (1.1 mg/m^2) IV over 2 to 5 minutes on days 1 and 8 of each cycle. Cycles repeat every 21 days in the absence of disease progression or unacceptable toxicity.

Phase I, DL2: Patients receive copanlisib (45 mg) IV over 1 hour and eribulin (1.4 mg/m^2) IV over 2 to 5 minutes on days 1 and 8 of each cycle. Cycles repeat every 21 days in the absence of disease progression or unacceptable toxicity.

Group I (Phase II, eribulin): Patients receive eribulin (1.4 mg/m^2) IV over 2 to 5 minutes on days 1 and 8 of each cycle. Cycles repeat every 21 days in the absence of disease progression or unacceptable toxicity.

Group II (Phase II, eribulin + copanlisib, DL1): Patients receive copanlisib (45 mg) IV over 1 hour and eribulin (1.1 mg/m^2) IV over 2 to 5 minutes on days 1 and 8 of each cycle. Cycles repeat every 21 days in the absence of disease progression or unacceptable toxicity.

Additionally, patients undergo a computed tomography (CT) scan and/or magnetic resonance imaging (MRI) at screening, cycle 3 day 1, and every 9 weeks thereafter. Patients also undergo a biopsy at baseline, cycle 2 day 1, and at time of disease progression as well as blood sample collection at baseline, cycle 2 day 1, every 9 weeks and at time of disease progression.

After completion of study treatment, patients are followed every 3 months for up to 36 months.

• Study Type: Interventional
• Enrollment (Actual): 24
• Phase: Phase 2; Phase 1

Contacts and Locations

Study Locations

• United States
  • California
    • Sacramento, California, United States, 95817
      • University of California Davis Comprehensive Cancer Center
  • Connecticut
    • Derby, Connecticut, United States, 06418
      • Smilow Cancer Hospital-Derby Care Center
    • Fairfield, Connecticut, United States, 06824
      • Smilow Cancer Hospital Care Center-Fairfield
    • Glastonbury, Connecticut, United States, 06033
      • Smilow Cancer Hospital Care Center at Glastonbury
    • Greenwich, Connecticut, United States, 06830
      • Smilow Cancer Hospital Care Center at Greenwich
    • Guilford, Connecticut, United States, 06437
      • Smilow Cancer Hospital Care Center - Guilford
    • Hartford, Connecticut, United States, 06105
      • Smilow Cancer Hospital Care Center at Saint Francis
    • New Haven, Connecticut, United States, 06520
      • Yale University
    • North Haven, Connecticut, United States, 06473
      • Yale-New Haven Hospital North Haven Medical Center
    • Stamford, Connecticut, United States, 06902
      • Smilow Cancer Hospital Care Center at Long Ridge
    • Trumbull, Connecticut, United States, 06611
      • Smilow Cancer Hospital Care Center-Trumbull
    • Waterbury, Connecticut, United States, 06708
      • Smilow Cancer Hospital-Waterbury Care Center
  • Florida
    • Aventura, Florida, United States, 33180
      • UM Sylvester Comprehensive Cancer Center at Aventura
    • Coral Gables, Florida, United States, 33146
      • UM Sylvester Comprehensive Cancer Center at Coral Gables
    • Deerfield Beach, Florida, United States, 33442
      • UM Sylvester Comprehensive Cancer Center at Deerfield Beach
    • Gainesville, Florida, United States, 32610
      • UF Health Cancer Institute - Gainesville
    • Miami, Florida, United States, 33136
      • University of Miami Miller School of Medicine-Sylvester Cancer Center
    • Miami, Florida, United States, 33176
      • UM Sylvester Comprehensive Cancer Center at Kendall
    • Plantation, Florida, United States, 33324
      • UM Sylvester Comprehensive Cancer Center at Plantation
  • Georgia
    • Atlanta, Georgia, United States, 30308
      • Emory University Hospital Midtown
    • Atlanta, Georgia, United States, 30322
      • Emory University Hospital/Winship Cancer Institute
  • Illinois
    • Shiloh, Illinois, United States, 62269
      • Memorial Hospital East
  • Kansas
    • Kansas City, Kansas, United States, 66160
      • University of Kansas Cancer Center
    • Overland Park, Kansas, United States, 66210
      • University of Kansas Cancer Center-Overland Park
    • Overland Park, Kansas, United States, 66211
      • University of Kansas Hospital-Indian Creek Campus
    • Westwood, Kansas, United States, 66205
      • University of Kansas Hospital-Westwood Cancer Center
  • Missouri
    • City of Saint Peters, Missouri, United States, 63376
      • Siteman Cancer Center at Saint Peters Hospital
    • Creve Coeur, Missouri, United States, 63141
      • Siteman Cancer Center at West County Hospital
    • Kansas City, Missouri, United States, 64154
      • University of Kansas Cancer Center - North
    • Lee's Summit, Missouri, United States, 64064
      • University of Kansas Cancer Center - Lee's Summit
    • North Kansas City, Missouri, United States, 64116
      • University of Kansas Cancer Center at North Kansas City Hospital
    • St Louis, Missouri, United States, 63110
      • Washington University School of Medicine
    • St Louis, Missouri, United States, 63129
      • Siteman Cancer Center-South County
    • St Louis, Missouri, United States, 63136
      • Siteman Cancer Center at Christian Hospital
  • New York
    • New York, New York, United States, 10032
      • NYP/Columbia University Medical Center/Herbert Irving Comprehensive Cancer Center
  • North Carolina
    • Wilkesboro, North Carolina, United States, 28659
      • Wake Forest Baptist Health - Wilkes Medical Center
    • Winston-Salem, North Carolina, United States, 27157
      • Wake Forest University Health Sciences
  • Oklahoma
    • Oklahoma City, Oklahoma, United States, 73104
      • University of Oklahoma Health Sciences Center
  • Pennsylvania
    • Pittsburgh, Pennsylvania, United States, 15232
      • University of Pittsburgh Cancer Institute (UPCI)
  • Tennessee
    • Nashville, Tennessee, United States, 37232
      • Vanderbilt University/Ingram Cancer Center
    • Nashville, Tennessee, United States, 37204
      • Vanderbilt Breast Center at One Hundred Oaks
  • Virginia
    • Richmond, Virginia, United States, 23298
      • VCU Massey Comprehensive Cancer Center
  • Wisconsin
    • Madison, Wisconsin, United States, 53792
      • University of Wisconsin Carbone Cancer Center - University Hospital

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years and older (Adult, Older Adult)
• Accepts Healthy Volunteers: No

Description

Inclusion Criteria:

• Male or female patients must have metastatic or unresectable carcinoma of the breast that is estrogen receptor (ER) negative (less than 10%), progesterone receptor (PR) negative (less than 10%), and HER2 negative/unamplified
• Patients must have had prior treatment with an anthracycline and taxane in the neoadjuvant, adjuvant, or metastatic setting, unless contraindicated or deemed to be suboptimal therapy per the treating physician
• Patients must have progressed on at least one and not more than five prior chemotherapy regimens, including in the neoadjuvant, adjuvant, and metastatic settings. Prior chemotherapy in the neoadjuvant and/or adjuvant setting counts as one prior line. Prior endocrine therapy, anti-HER2 directed therapies, PARP inhibitors, immunotherapy alone, or other targeted therapy will not count as a prior therapy line, as long as the patient meets the eligibility criteria prior to enrollment. Immunotherapy combined with chemotherapy will be considered one line
• All patients must agree to provide archival tumor material (most recent archival tumor tissue immediately prior to enrollment is strongly preferred) for research and must agree to undergo research tumor biopsy before treatment if presence of easily accessible lesions (judged by the treating physician). For patients with bone only disease, or patients without easily accessible lesions for the baseline research biopsy, availability of archival tumor material (2 x 4-5 micron section unstained slides, plus 15-20 x 10 micron section unstained slides or a tumor rich block) from previous breast cancer diagnosis or treatment is required for PTEN and PIK3CA analysis
• Age >= 18 years. Because no dosing or adverse event data are currently available on the use of copanlisib in combination with eribulin in patients < 18 years of age, children are excluded from this study, but will be eligible for future pediatric trials
• Eastern Cooperative Oncology Group (ECOG) performance status =< 1 (Karnofsky >= 70%)
• Leukocytes >= 3,000/mcL
• Absolute neutrophil count >= 1,500/mcL
• Platelets >= 100,000/mcL
• Hemoglobin >= 8.0 g/dL
• Total bilirubin =< 1.5 x institutional upper limit of normal (ULN) (=< 3 x institutional ULN for patients with Gilbert syndrome)
• Aspartate aminotransferase (AST) (serum glutamic-oxaloacetic transaminase [SGOT]) / alanine aminotransferase (ALT) (serum glutamate pyruvate transaminase [SGPT]) =< 3 x institutional ULN
• Lipase =< 1.5 x ULN
• Creatinine < 1.5 mg/dL AND glomerular filtration rate (GFR) >= 50 mL/min/1.73 m^2
• International normalized ratio (INR) =< 1.5 x ULN
• Partial thromboplastin time (PTT) =< 1.5 x ULN
• Patients with history of known type I or type II diabetes must have a fasting glucose level of < 120 mg/dL on at least 2 separate occasions or glycosylated hemoglobin measurement (HbA1c) < 8.5% at screening within 14 days prior to registration
• Patients who are therapeutically treated with an agent such as warfarin or heparin will be allowed to participate provided that their medication dose and INR/PTT is stable
• Prophylactic antiemetics may be administered according to standard practice. The routine use of standard antiemetics, including 5-HT3 blockers, such as granisetron, ondansetron, or an equivalent agent, is allowed as needed, as long as corrected QT (QTc) interval on baseline electrocardiogram (ECG) < 480 msec. The use of corticosteroids as antiemetics prior to copanlisib administration will not be allowed
• For patients with evidence of chronic hepatitis B virus (HBV) infection, the HBV viral load must be undetectable on suppressive therapy, if indicated
• Human immunodeficiency virus (HIV)-infected patients on effective anti-retroviral therapy with undetectable viral load within 6 months are eligible for this trial provided they are on a stable regimen of anti-retroviral therapy (ART) with no medications otherwise prohibited by this protocol (e.g. drug-drug interactions)
• Patients with a history of hepatitis C virus (HCV) infection must have been treated and cured. For patients with HCV infection who are currently on treatment, they are eligible if they have an undetectable HCV viral load
• Patients with treated brain metastases are eligible if follow-up brain imaging after central nervous system (CNS)-directed therapy shows no evidence of progression. For patients with history of treated brain metastases, brain scans will be performed within 6 weeks of study enrollment. During study enrollment in the phase 2 portion of the study, brain MRI will be performed every 12 weeks or sooner if clinically-indicated in all patients with history of known brain metastases
• For phase 1 portion of the study only: patients with new or progressive brain metastases (active brain metastases) or leptomeningeal disease are eligible if the treating physician determines that immediate CNS specific treatment is not required and is unlikely to be required during the first cycle of therapy. This is not allowed for phase 2 portion of the study
• Patients with a prior or concurrent malignancy whose natural history or treatment does not have the potential to interfere with the safety or efficacy assessment of the investigational regimen are eligible for this trial
• Patients with known history or current symptoms of cardiac disease, or history of treatment with cardiotoxic agents, should have a clinical risk assessment of cardiac function using the New York Heart Association Functional Classification. To be eligible for this trial, patients should be class 2B or better. Patients with history of known congestive heart failure (left ventricular ejection fraction [LVEF] < 50%) must have documented LVEF >= 50% within 12 months of study enrollment
• Known mutation status for PIK3CA and PTEN from archival tumor tissue analysis
• The effects of copanlisib on the developing human fetus are unknown. For this reason and because maternal toxicity, developmental toxicity and teratogenic effects have been observed in nonclinical studies and PI3K inhibitors as well as other therapeutic agents used in this trial are known to be teratogenic, women of child-bearing potential must agree to use adequate contraception (hormonal or barrier method of birth control; abstinence) prior to study entry and for the duration of study participation, and for 1 month after the last dose of study medication. Should a woman become pregnant or suspect she is pregnant while she or her partner is participating in this study, she should inform her treating physician immediately. Men treated or enrolled on this protocol must also agree to use adequate contraception prior to the study, for the duration of study participation, and 3.5 months after completion of study treatment
• Ability to understand and the willingness to sign a written informed consent document. Participants with impaired decision-making capacity (IDMC) who have a legally-authorized representative (LAR) and/or family member available will also be eligible

Exclusion Criteria:

• Patients who have had chemotherapy or radiotherapy within 3 weeks of treatment start (cycle 1 day 1 [C1D1])
• Patients who have had prior treatment with nitrosoureas or mitomycin C
• Patients who have had prior treatment with eribulin
• Patients who have had prior treatment with PI3K/mTOR/AKT pathway inhibitor
• Clinically significant ECG abnormality, including prolonged corrected QT (QTc) interval > 480 msec or history of risk factors for Torsades de Pointes (TdP) (i.e. congestive heart failure, hypokalemia, hypomagnesemia, bradyarrhythmias, family history of long QT syndrome)
• Patients with pre-existing neuropathy of grade 2 or higher
• Myeloid growth factors within 7 days prior to treatment start
• Platelet transfusion within 7 days prior to treatment start
• Patients who have not recovered from adverse events due to prior anti-cancer therapy (i.e., have residual toxicities > grade 1) with the exception of alopecia
• Patients who are receiving any other investigational agents
• Immunosuppressive therapy is not allowed while on study
• Known tumor AKT mutation from archival tumor tissue analysis
• History of allergic reactions attributed to compounds of similar chemical or biologic composition to copanlisib, PI3K inhibitors, or other agents used in study

• Copanlisib is primarily metabolized by CYP3A4. Therefore, the concomitant use of strong inhibitors of CYP3A4 (e.g., ketoconazole, itraconazole, clarithromycin, ritonavir, indinavir, nelfinavir and saquinavir), and strong inducers of CYP3A4 (e.g. rifampin, phenytoin, carbamazepine, phenobarbital, St. John's Wort) are not permitted from 14 days prior to enrollment until the end of the study. Other medications that are prohibited while on copanlisib treatment:

  • Herbal medications/preparations (except for vitamins)
  • Anti-arrhythmic therapy other than beta blockers or digoxin
• Systemic corticosteroid therapy at a daily dose higher than 15 mg prednisone or equivalent is not permitted while on study. Previous corticosteroid therapy must be stopped or reduced to the allowed dose at least 7 days prior to the CT/MRI screening. If a patient is on chronic corticosteroid therapy, corticosteroids should be de-escalated to the maximum allowed dose before the screening. Patients may be using topical or inhaled corticosteroids. Short-term (up to 7 days) systemic corticosteroids above 15 mg prednisolone or equivalent will be allowed for the management of acute conditions (e.g., treatment non-infectious pneumonitis). The use of corticosteroids as antiemetics prior to copanlisib administration will not be allowed
• Patients with uncontrolled intercurrent illness
• Patients with psychiatric illness/social situations that would limit compliance with study requirements
• Patients with non-healing wound, ulcer, or bone fracture. Patients with compression or pathologic fractures that are stable in the opinion of the investigator may be enrolled, as long as the bone fracture is not felt to pose a high likelihood of treatment delay or difficulties in treatment adherence as per the judgement of the investigator
• Patients with active, clinically serious infections > grade 2 (Common Terminology Criteria for Adverse Events Version 5.0 [CTCAEv5.0]) (viral, bacterial or fungal infection)
• History of known Pneumocystis jiroveci pneumonia (PJP) infection
• Patients with arterial or venous thrombotic or embolic events such as cerebrovascular accident (including transient ischemic attacks), deep vein thrombosis or pulmonary embolism within 3 months before the start of study medication
• Concurrent diagnosis of pheochromocytoma due to risk of hypertension with copanlisib
• Uncontrolled hypertension (defined as blood pressure >= 150/90 mm/Hg) despite optimal medical management (per investigator's opinion)
• Proteinuria as estimated by urine protein/creatinine ratio > 3.5 g/g on random urine sample or grade >= 3 as assessed by 24-hour urine protein collection
• Patients with history of or current uncontrolled autoimmune disease. Patients who have adrenal or pituitary insufficiency who are stable on replacement therapy (i.e. thyroxine or physiologic corticosteroid replacement therapy that meets concomitant medication restrictions) are allowed. Limited exceptions may be made to this after discussion with the study principal investigator (PI)
• Patients with congenital QT prolongation
• The patient has a personal history of any of the following conditions: syncope of cardiovascular etiology, ventricular arrhythmia of pathological origin (including, but not limited to, ventricular tachycardia and ventricular fibrillation), or sudden cardiac arrest
• Pregnant women are excluded from this study because copanlisib is a PI3K inhibitor agent and eribulin is an anti-tubulin agent with the potential for teratogenic or abortifacient effects. Because there is an unknown but potential risk for adverse events in nursing infants secondary to treatment of the mother with copanlisib and eribulin, breastfeeding should be discontinued if the mother is treated with copanlisib and/or eribulin. These potential risks may also apply to other agents used in this study

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Randomized
• Interventional Model: Sequential Assignment
• Masking: None (Open Label)

Number of Arms

4

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Phase I, DL1 (eribulin, copanlisib); Phase I, DL1: Patients receive copanlisib (45 mg) IV over 1 hour and eribulin (1.1 mg/m^2) IV over 2 to 5 minutes on days 1 and 8 of each cycle. Cycles repeat every 21 days in the absence of disease progression or unacceptable toxicity. Additionally, patients undergo a CT scan and/or MRI at screening, cycle 3 day 1, and every 9 weeks thereafter. Patients also undergo a biopsy at baseline, cycle 2 day 1, and at time of disease progression as well as blood sample collection at baseline, cycle 2 day 1, every 9 weeks and at time of disease progression.	Procedure: Magnetic Resonance Imaging; Undergo MRI; Other Names: MRI; Magnetic Resonance; Magnetic Resonance Imaging Scan; Medical Imaging, Magnetic Resonance / Nuclear Magnetic Resonance; MR; MR Imaging; MRI Scan; NMR Imaging; NMRI; Nuclear Magnetic Resonance Imaging; Magnetic Resonance Imaging (MRI); sMRI; Magnetic resonance imaging (procedure); MRIs; Structural MRI; Drug: Copanlisib Hydrochloride; Given IV; Other Names: 5-Pyrimidinecarboxamide, 2-Amino-N-(2,3-dihydro-7-methoxy-8-(3-(4-morpholinyl)propoxy)imidazo(1,2-C)quinazolin-5-yl)-, Hydrochloride (1:2); Aliqopa; BAY 80-6946 Dihydrochloride; BAY-80-6946 Dihydrochloride; Copanlisib Dihydrochloride; Procedure: Biospecimen Collection; Undergo blood sample collection; Other Names: Biological Sample Collection; Biospecimen Collected; Specimen Collection; Procedure: Computed Tomography; Undergo CT scan; Other Names: CT; CAT; CAT Scan; Computed Axial Tomography; Computerized Axial Tomography; Computerized Tomography; CT Scan; tomography; Computerized axial tomography (procedure); Computerized Tomography (CT) scan; Diagnostic CAT Scan; Diagnostic CAT Scan Service Type; Drug: Eribulin Mesylate; Given IV; Other Names: Halaven; E7389; B1939 Mesylate; Halichondrin B Analog; ER-086526 Mesylate; Procedure: Biopsy Procedure; Undergo biopsy; Other Names: Bx; BIOPSY_TYPE; Biopsy
Active Comparator: Group I (Phase II, eribulin); Group I (Phase II): Patients receive eribulin (1.4 mg/m^2) IV over 2 to 5 minutes on days 1 and 8 of each cycle. Cycles repeat every 21 days in the absence of disease progression or unacceptable toxicity. Additionally, patients undergo a CT scan and/or MRI at screening, cycle 3 day 1, and every 9 weeks thereafter. Patients also undergo a biopsy at baseline, cycle 2 day 1, and at time of disease progression as well as blood sample collection at baseline, cycle 2 day 1, every 9 weeks and at time of disease progression.	Procedure: Magnetic Resonance Imaging; Undergo MRI; Other Names: MRI; Magnetic Resonance; Magnetic Resonance Imaging Scan; Medical Imaging, Magnetic Resonance / Nuclear Magnetic Resonance; MR; MR Imaging; MRI Scan; NMR Imaging; NMRI; Nuclear Magnetic Resonance Imaging; Magnetic Resonance Imaging (MRI); sMRI; Magnetic resonance imaging (procedure); MRIs; Structural MRI; Procedure: Biospecimen Collection; Undergo blood sample collection; Other Names: Biological Sample Collection; Biospecimen Collected; Specimen Collection; Procedure: Computed Tomography; Undergo CT scan; Other Names: CT; CAT; CAT Scan; Computed Axial Tomography; Computerized Axial Tomography; Computerized Tomography; CT Scan; tomography; Computerized axial tomography (procedure); Computerized Tomography (CT) scan; Diagnostic CAT Scan; Diagnostic CAT Scan Service Type; Drug: Eribulin Mesylate; Given IV; Other Names: Halaven; E7389; B1939 Mesylate; Halichondrin B Analog; ER-086526 Mesylate; Procedure: Biopsy Procedure; Undergo biopsy; Other Names: Bx; BIOPSY_TYPE; Biopsy
Experimental: Group II (Phase II, DL1, eribulin, copanlisib); Group II (Phase II, DL1): Patients receive copanlisib (45 mg) IV over 1 hour and eribulin (1.1 mg/m^2) IV over 2 to 5 minutes on days 1 and 8 of each cycle. Cycles repeat every 21 days in the absence of disease progression or unacceptable toxicity. Additionally, patients undergo a CT scan and/or MRI at screening, cycle 3 day 1, and every 9 weeks thereafter. Patients also undergo a biopsy at baseline, cycle 2 day 1, and at time of disease progression as well as blood sample collection at baseline, cycle 2 day 1, every 9 weeks and at time of disease progression.	Procedure: Magnetic Resonance Imaging; Undergo MRI; Other Names: MRI; Magnetic Resonance; Magnetic Resonance Imaging Scan; Medical Imaging, Magnetic Resonance / Nuclear Magnetic Resonance; MR; MR Imaging; MRI Scan; NMR Imaging; NMRI; Nuclear Magnetic Resonance Imaging; Magnetic Resonance Imaging (MRI); sMRI; Magnetic resonance imaging (procedure); MRIs; Structural MRI; Drug: Copanlisib Hydrochloride; Given IV; Other Names: 5-Pyrimidinecarboxamide, 2-Amino-N-(2,3-dihydro-7-methoxy-8-(3-(4-morpholinyl)propoxy)imidazo(1,2-C)quinazolin-5-yl)-, Hydrochloride (1:2); Aliqopa; BAY 80-6946 Dihydrochloride; BAY-80-6946 Dihydrochloride; Copanlisib Dihydrochloride; Procedure: Biospecimen Collection; Undergo blood sample collection; Other Names: Biological Sample Collection; Biospecimen Collected; Specimen Collection; Procedure: Computed Tomography; Undergo CT scan; Other Names: CT; CAT; CAT Scan; Computed Axial Tomography; Computerized Axial Tomography; Computerized Tomography; CT Scan; tomography; Computerized axial tomography (procedure); Computerized Tomography (CT) scan; Diagnostic CAT Scan; Diagnostic CAT Scan Service Type; Drug: Eribulin Mesylate; Given IV; Other Names: Halaven; E7389; B1939 Mesylate; Halichondrin B Analog; ER-086526 Mesylate; Procedure: Biopsy Procedure; Undergo biopsy; Other Names: Bx; BIOPSY_TYPE; Biopsy
Experimental: Phase I, DL2 (eribulin, copanlisib); Phase I, DL2: Patients receive copanlisib (45 mg) IV over 1 hour and eribulin (1.4 mg/m^2) IV over 2 to 5 minutes on days 1 and 8 of each cycle. Cycles repeat every 21 days in the absence of disease progression or unacceptable toxicity. Additionally, patients undergo a CT scan and/or MRI at screening, cycle 3 day 1, and every 9 weeks thereafter. Patients also undergo a biopsy at baseline, cycle 2 day 1, and at time of disease progression as well as blood sample collection at baseline, cycle 2 day 1, every 9 weeks and at time of disease progression.	Procedure: Magnetic Resonance Imaging; Undergo MRI; Other Names: MRI; Magnetic Resonance; Magnetic Resonance Imaging Scan; Medical Imaging, Magnetic Resonance / Nuclear Magnetic Resonance; MR; MR Imaging; MRI Scan; NMR Imaging; NMRI; Nuclear Magnetic Resonance Imaging; Magnetic Resonance Imaging (MRI); sMRI; Magnetic resonance imaging (procedure); MRIs; Structural MRI; Drug: Copanlisib Hydrochloride; Given IV; Other Names: 5-Pyrimidinecarboxamide, 2-Amino-N-(2,3-dihydro-7-methoxy-8-(3-(4-morpholinyl)propoxy)imidazo(1,2-C)quinazolin-5-yl)-, Hydrochloride (1:2); Aliqopa; BAY 80-6946 Dihydrochloride; BAY-80-6946 Dihydrochloride; Copanlisib Dihydrochloride; Procedure: Biospecimen Collection; Undergo blood sample collection; Other Names: Biological Sample Collection; Biospecimen Collected; Specimen Collection; Procedure: Computed Tomography; Undergo CT scan; Other Names: CT; CAT; CAT Scan; Computed Axial Tomography; Computerized Axial Tomography; Computerized Tomography; CT Scan; tomography; Computerized axial tomography (procedure); Computerized Tomography (CT) scan; Diagnostic CAT Scan; Diagnostic CAT Scan Service Type; Drug: Eribulin Mesylate; Given IV; Other Names: Halaven; E7389; B1939 Mesylate; Halichondrin B Analog; ER-086526 Mesylate; Procedure: Biopsy Procedure; Undergo biopsy; Other Names: Bx; BIOPSY_TYPE; Biopsy

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Maximum Tolerated Dose of Eribulin (MTD) (Phase I)	MTD is defined as the highest dose level of eribulin at which at most 1 of 6 patients experience a dose limiting toxicity during the observation window.	Up to 28 days
Recommended Phase 2 Dose of Eribulin (RP2D) (Phase I)	RP2D is the maximum tolerated dose of eribulin at which at most 1 of 6 patients experience a dose limiting toxicity during the observation window.	Up to 28 days
Maximum Tolerated Dose of Copanlisib (MTD) (Phase I)	MTD is defined as the highest dose level of copanlisib at which at most 1 of 6 patients experience a dose limiting toxicity during the observation window.	Up to 28 days
Recommended Phase 2 Dose of Copanlisib (RP2D) (Phase I)	RP2D is the maximum tolerated dose of copanlisib at which at most 1 of 6 patients experience a dose limiting toxicity during the observation window.	Up to 28 days
Progression Free Survival (PFS) (Phase II)	Progression is defined using Response Evaluation Criteria In Solid Tumors Criteria (RECIST v1.1), as a 20% increase in the sum of the longest diameter of measurable target lesions, a measurable increase in a non-target lesion, or the appearance of new lesions. Patients who have not experienced progression or death will be censored at last follow up. PFS will be estimated using the Kaplan-Meier product limit estimator.	From date of treatment start to date of progression or death, assessed up to 36 months

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Objective Response Rate (ORR) (Phase I)	ORR is defined as the proportion of patients with complete response, partial response by Response Evaluation Criteria in Solid Tumors (RECIST) version (v)1.1. Per RECIST 1.1, target lesions and assessed by CT/MRI: Complete Response (CR), Disappearance of all target lesions; Partial Response (PR), >=30% decrease in the sum of the longest diameter of target lesions. Overall Response (OR) = CR + PR.	Up to 36 months
Clinical Benefit Rate (CBR) (Phase I)	CBR defined as the proportion of patients with clinical benefit (complete response, partial response and stable disease lasting > 24 weeks) per RECIST v1.1 in the overall population, and by PTEN/PIK3CA mutation status based on archival tumor tissue next generation sequencing. Per RECIST 1.1, target lesions and assessed by CT/MRI: Complete Response (CR), Disappearance of all target lesions; Partial Response (PR), >=30% decrease in the sum of the longest diameter of target lesions; Stable Disease (SD), Neither 30% shrinkage of longest diameter of target lesions to qualify for PR nor 20% increase in longest diameter of target lesion to qualify for PD, for a period of time greater than 24 weeks.	Up to 36 months
ORR (Phase II)	ORR is defined as the proportion of patients with complete response, partial response by Response Evaluation Criteria in Solid Tumors (RECIST) version (v)1.1. Per RECIST 1.1, target lesions and assessed by CT/MRI: Complete Response (CR), Disappearance of all target lesions; Partial Response (PR), >=30% decrease in the sum of the longest diameter of target lesions. Overall Response (OR) = CR + PR.	Up to 36 months
CBR (Phase II)	CBR is defined as the proportion of patients with clinical benefit (complete response, partial response, and stable disease lasting ≥ 24 weeks) per RECIST v1.1 in each arm. Per RECIST 1.1, target lesions and assessed by CT/MRI: Complete Response (CR), Disappearance of all target lesions; Partial Response (PR), >=30% decrease in the sum of the longest diameter of target lesions; Stable Disease (SD), Neither 30% shrinkage of longest diameter of target lesions to qualify for PR nor 20% increase in longest diameter of target lesion to qualify for PD, for a period of time greater than 24 weeks.	Up to 36 months
PFS (Phase I)	PFS is defined from date of treatment start to date of progression or death. Progression is defined using Response Evaluation Criteria In Solid Tumors Criteria (RECIST v1.1), as a 20% increase in the sum of the longest diameter of measurable target lesions, a measurable increase in a non-target lesion, or the appearance of new lesions. Patients who have not experienced progression or death will be censored at last follow up. PFS will be estimated using the Kaplan-Meier product limit estimator.	From start of treatment to time of progression or death, whichever occurs first, assessed up to 36 months

Other Outcome Measures

Outcome Measure	Measure Description	Time Frame
PFS	PFS is defined from date of treatment start to date of progression or death. Patients who have not experienced progression or death will be censored at last follow up. Measured by treatment arm in patients with TNBC harboring mutations in PIK3CA/ PTEN or loss of PTEN expression by IHC of baseline (pre-treatment) biopsy and by treatment arm in patients with TNBC harboring mutations in PIK3CA/ PTEN by ctDNA at baseline (pre-treatment) biopsy and potential changes over time. PFS will be estimated using the Kaplan-Meier product limit estimator.	From date of treatment start to date of progression or death, assessed up to 36 months
Tumor Tissue Mutation or Gene Expression Profiles	Will correlate with treatment response	Up to 36 months
Intrinsic and Adaptive Resistance Mechanisms	Will analyze pre and post treatment biopsies for gene expression and proteomic changes.	Baseline up to 36 months
ctDNA Mutation Profiles and Changes in Mutation Profile and Variant Allele Frequencies (VAFs)	Will determine ctDNA mutation profiles at baseline and changes in mutation profile and VAFs on C2D1 and at disease progression compared to baseline to correlate with treatment response.	Baseline, cycle 2 day 1 (C2D2), and at disease progression
Circulating Biomarkers Predictive of Treatment Response		Up to 36 months
Plasma and Serum Proteomics and Metabolomics Predictive of Treatment Response		Up to 36 months
PTEN IHC Results	Will compare PTEN IHC results at disease progression compared to baseline.	Up to 36 months
Target Inhibition of PI3K Pathway and Mitotic Arrest	Using phospho-AKT and phospho-histone H3 with eribulin plus copanlisib versus eribulin alone.	Up to 36 months

Collaborators and Investigators

• Sponsor: National Cancer Institute (NCI)
• Investigators: Principal Investigator: Nusayba Bagegni, Washington University School of Medicine

Study record dates

Study Major Dates

• Study Start (Actual): March 1, 2021
• Primary Completion (Actual): March 28, 2024
• Study Completion (Estimated): May 31, 2027

Study Registration Dates

• First Submitted: April 14, 2020
• First Submitted That Met QC Criteria: April 14, 2020
• First Posted (Actual): April 15, 2020

Study Record Updates

• Last Update Posted (Actual): May 27, 2026
• Last Update Submitted That Met QC Criteria: May 7, 2026
• Last Verified: November 1, 2025

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Neoplasms by Site; Neoplasms; Skin Diseases; Breast Diseases; Breast Neoplasms; Skin and Connective Tissue Diseases; Triple Negative Breast Neoplasms; Investigative Techniques; Clinical Laboratory Techniques; Diagnostic Techniques and Procedures; Diagnosis; Surgical Procedures, Operative; Cytological Techniques; Cytodiagnosis; Diagnostic Techniques, Surgical; Chemistry Techniques, Analytical; Spectrum Analysis; Biopsy; Specimen Handling; Magnetic Resonance Spectroscopy; eribulin; copanlisib
• Other Study ID Numbers: NCI-2020-02319 (Registry Identifier: CTRP (Clinical Trial Reporting Program)); UM1CA186689 (U.S. NIH Grant/Contract); UM1CA186704 (U.S. NIH Grant/Contract); 202010089; 10382 (Other Identifier: CTEP)

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: YES
• IPD Plan Description: NCI is committed to sharing data in accordance with NIH policy. For more details on how clinical trial data is shared, access the link to the NIH data sharing policy page.

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: Yes
• Studies a U.S. FDA-regulated device product: No