Copanlisib, Letrozole, and Palbociclib in Treating Patients With Hormone Receptor Positive HER2 Negative Stage I-IV Breast Cancer
Estrogen Receptor Positive, HER2/Neu Negative, Invasive Breast Carcinoma

About this trial
This is an interventional treatment trial for Estrogen Receptor Positive
Eligibility Criteria
Inclusion Criteria:
- Post-menopausal (if female) defined as: 1) prior bilateral oophorectomy, 2) age 60 or over, or 3) < 60 years and amenorrheic for at least 12 months with follicle-stimulating hormone (FSH) and estradiol in the postmenopausal range per institutional parameters); use of luteinizing hormone-releasing hormone (LHRH) agonists to induce chemical ovarian ablation will not be allowed for this study
- Tumor is hormone receptor (HR)+ (estrogen receptor and/or progesterone receptor positive with at least 10% expression of either receptor by local immunohistochemical staining) and HER2 negative based on local assessment
- FOR PHASE Ib PORTION OF THE STUDY:
- Locally advanced/non-operable or metastatic breast cancer that has not been previously treated in the metastatic setting with systemic therapy (i.e. first line treatment)
- Measurable disease per RECIST 1.1
- FOR PHASE II PORTION OF THE STUDY:
- Clinical stage I (breast tumor >= 1.0 cm in diameter), stage II or stage III breast cancer (according to the American Joint Committee on Cancer [AJCC] Staging Manual, 7th Edition, 2010); multifocal disease is allowed if confined to 1 breast, as long as one tumor is at least 1 cm and meets all of the other inclusion criteria
- Breast cancer suitable for mandatory baseline core biopsy
- No prior systemic therapy or radiotherapy for currently-diagnosed invasive or noninvasive breast cancer
- FOR ALL PHASES (Ib AND II):
- Absolute neutrophil count (ANC) >= 1.5 x 10^9/L
- Platelets > 100 x 10^9/L
Hemoglobin >= 8 g/dL (phase Ib) or >= 10 g/dL (for phase II portion)
- For phase Ib portion only: patients may receive erythrocyte transfusions to achieve this hemoglobin level at the discretion of the investigator; however, initial study drug treatment must not begin earlier than the day of the erythrocyte transfusion
- Bilirubin =< 1.5 times the upper limit of normal (ULN)
- Alanine aminotransferase (ALT) and aspartate aminotransferase (AST) =< 3.0 times ULN
- Subjects with Gilbert's syndrome, confirmed by genotyping or Invader UGTIA1 molecular assay prior to study entry, must have total bilirubin < 3.0 times ULN
- Serum creatinine =< 1.5 times ULN
- Lipase =< 1.5 x ULN
- International normalized ratio (INR) and partial thromboplastin time (PTT) < 1.5 x ULN
- Left ventricular ejection fraction (LVEF) >= 50%
- Eastern Cooperative Oncology Group (ECOG) performance status 0-1
Exclusion Criteria:
- FOR PHASE Ib ONLY:
- Early stage (curable) breast cancer
- FOR PHASE II ONLY:
- Metastatic breast cancer (local spread to axillary or internal mammary lymph nodes is permitted)
- Prior systemic therapy for invasive or non-invasive (DCIS) breast cancer
- Prior radiotherapy to the ipsilateral chest wall or breast for any malignancy
- Bilateral invasive breast cancer
- FOR ALL PHASES (Ib AND II): Inflammatory breast cancer
- FOR ALL PHASES (Ib AND II): Concurrent therapy with any other non-protocol anti-cancer therapy
- FOR ALL PHASES (Ib AND II): History of any other malignancy within the past 5 years, with the exception of non-melanoma skin cancer or carcinoma-in-situ of the cervix
- FOR ALL PHASES (Ib AND II): Concurrent diagnosis of pheochromocytoma
- FOR ALL PHASES (Ib AND II): Current therapy with raloxifene, tamoxifen, aromatase inhibitor, or other selective estrogen receptor modulator (SERM), either for osteoporosis or prevention of breast cancer; subjects must have discontinued therapies for at least 28 days prior to first baseline biopsy
- FOR ALL PHASES (Ib AND II): Concurrent treatment with postmenopausal hormone replacement therapy; prior treatment must be stopped for at least 28 days prior to first baseline biopsy
- FOR ALL PHASES (Ib AND II): Type I diabetes or patients on insulin therapy are not allowed; uncontrolled type II diabetes not allowed (glycosylated hemoglobin [HbA1c] > 7.5)
- FOR ALL PHASES (Ib AND II): Proteinuria of >= Common Terminology Criteria for Adverse Events (CTCAE) grade 3 as estimated by urine protein : creatinine ratio > 3.5 on a random urine sample
- FOR ALL PHASES (Ib AND II): Uncontrolled arterial hypertension despite optimal medical management
- FOR ALL PHASES (Ib AND II): Hepatitis B (HBV) or hepatitis C (HCV); all patients must be screened for HBV and HCV up to 28 days prior to study drug start using the routine hepatitis virus laboratorial panel
- FOR ALL PHASES (Ib AND II): Known history of human immunodeficiency virus (HIV) infection
- FOR ALL PHASES (Ib AND II): Uncontrolled infection; active, clinically serious infections (> CTCAE grade 2)
FOR ALL PHASES (Ib AND II): History of significant cardiac disease:
- Congestive heart failure > New York Heart Association (NYHA) class 2
- Unstable angina (angina symptoms at rest), new-onset angina (begun within the last 3 months)
- Myocardial infarction less than 6 months before start of test drug
- Anti-arrhythmic therapy (beta blockers or digoxin are permitted)
- FOR ALL PHASES (Ib AND II): 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
- FOR ALL PHASES (Ib AND II): Participants receiving anticoagulation therapy are not allowed
- FOR ALL PHASES (Ib AND II): Patients with evidence or history of bleeding diathesis; any hemorrhage or bleeding event >= CTCAE grade 3 within 4 weeks of start of study medication
- FOR ALL PHASES (Ib AND II): Blood or platelet transfusion within 7 days prior to treatment start
- FOR ALL PHASES (Ib AND II): Non-healing wound or ulcer
- FOR ALL PHASES (Ib AND II): History of, or current autoimmune disease
- FOR ALL PHASES (Ib AND II): Major surgical procedure or significant traumatic injury (as judged by the investigator) within 28 days before start of study medication, open biopsy within 7 days before start of study medication
- FOR ALL PHASES (Ib AND II): Patients with seizure disorder requiring medication
- FOR ALL PHASES (Ib AND II): Known hypersensitivity to any of the study drugs, study drug classes, or excipients in the formulation
- FOR ALL PHASES (Ib AND II): Systemic continuous corticosteroid therapy at a daily dose higher than 15 mg prednisone or equivalent is not allowed; patients may be using topical or inhaled corticosteroids; previous corticosteroid therapy must be stopped or reduced to the allowed dose at least 7 days prior to the first study drug administration; if a patient is on chronic corticosteroid therapy, corticosteroids should be de-escalated to the maximum allowed dose after the patient has signed the consent document
- FOR ALL PHASES (Ib AND II): History of having received an allogeneic bone marrow or organ transplant
- FOR ALL PHASES (Ib AND II): Chronic oxygen therapy
Sites / Locations
- UCLA / Jonsson Comprehensive Cancer Center
Arms of the Study
Arm 1
Arm 2
Arm 3
Arm 4
Experimental
Experimental
Experimental
Experimental
Arm A (copanlisib, letrozole)
Arm B (copanlisib, palbociclib, letrozole)
Arm C (copanlisib, palbociclib, letrozole)
Phase Ib (copanlisib, palbociclib, letrozole)
PHASE II: Patients receive copanlisib (MTD) IV over 1 hour on days 1, 8, and 15 and letrozole PO continuously on days 1-28. Treatment repeats every 28 days for up to 4 courses in the absence of disease progression, or unacceptable toxicity.
PHASE II: Patients receive copanlisib (MTD) IV over 1 hour on days 1, 8, and 15, palbociclib PO QD on days 1-21, and letrozole PO continuously on days 1-28. Treatment repeats every 28 days for up to 4 courses in the absence of disease progression or unacceptable toxicity.
PHASE II: Patients receive palbociclib PO QD for days 1-14 of course 1 and letrozole PO continuously on days 1-14. Patients then undergo biopsy. Patients then receive copanlisib IV over 1 hour on days 1, 8, and 15 and letrozole PO continuously on days 1-28. Treatment with copanlisib (MTD) and letrozole repeats every 28 days for up to 3.5 courses in the absence of disease progression or unacceptable toxicity.
PHASE Ib: Patients with metastatic breast cancer receive copanlisib IV over 1 hour on days 1, 8, and 15, palbociclib PO QD on days 1-21, and letrozole PO continuously on days 1-28. Treatment repeats every 28 days for up to 4 courses in the absence of disease progression or unacceptable toxicity.