Georgia's Online Cancer Information Center

Find A Clinical Trial

Testing the Drug Atezolizumab or Placebo with Usual Therapy in First-Line HER2-Positive Metastatic Breast Cancer

Status
Closed
Cancer Type
Breast Cancer
Trial Phase
Phase III
Eligibility
18 Years and older, Male and Female
Study Type
Treatment
NCT ID
NCT03199885
Protocol IDs
NRG-BR004 (primary)
NRG-BR004
NCI-2017-01119
Study Sponsor
NRG Oncology

Summary

This randomized phase III trial studies how well paclitaxel, trastuzumab, and pertuzumab with or without atezolizumab works in treating patients with breast cancer that has spread to other parts of the body (metastatic). Chemotherapy drugs, such as paclitaxel, 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. Trastuzumab is a form of “targeted therapy” because it works by attaching itself to specific molecules (receptors) on the surface of cancer cells, known as HER2 receptors. When trastuzumab attaches to HER2 receptors, the signals that tell the cells to grow are blocked and the cancer cell may be marked for destruction by the body’s immune system. Monoclonal antibodies, such as pertuzumab, may interfere with the ability of cancer cells to grow and spread. Immunotherapy with monoclonal antibodies, such as atezolizumab, may induce changes in body’s immune system and may interfere with the ability of tumor cells to grow and spread. It is not yet known whether giving paclitaxel, trastuzumab, and pertuzumab with or without atezolizumab may kill more tumor cells.

*NOTE: This study has a central confirmation step. The purpose of this step is to confirm by central testing that the patient's tumor has specific receptors. If the patient meets all the study requirements, the patient will join the study and begin therapy for breast cancer while the tumor is being tested.

Objectives

PRIMARY OBJECTIVE:
I. To determine whether the addition of atezolizumab to a regimen of pertuzumab and trastuzumab combined with a taxane (paclitaxel or docetaxel) will improve the progression-free survival (PFS), assessed by investigator using Response Evaluation Criteria in Solid Tumors (RECIST) 1.1 criteria, relative to the addition of a placebo to a regimen of pertuzumab and trastuzumab combined with a taxane (paclitaxel or docetaxel) in patients with newly documented HER2-positive measurable metastatic breast cancer.

SECONDARY OBJECTIVES:
I. To determine whether the addition of atezolizumab to a regimen of pertuzumab and trastuzumab combined with a taxane (paclitaxel or docetaxel) will improve the overall survival (OS) relative to the addition of placebo to a regimen of pertuzumab and trastuzumab, combined with a taxane (paclitaxel or docetaxel).
II. To determine whether the addition of atezolizumab to a regimen of pertuzumab and trastuzumab combined with a taxane (paclitaxel or docetaxel) will improve the overall objective response (OR), assessed by investigator using RECIST 1.1 criteria, relative to the addition of placebo to a regimen of pertuzumab and trastuzumab combined with a taxane (paclitaxel or docetaxel).
III. To determine whether the addition of atezolizumab to a regimen of pertuzumab and trastuzumab combined with a taxane (paclitaxel or docetaxel) will improve PFS, OR, and/or duration of objective response assessed by retrospective blinded central review using RECIST 1.1 criteria, relative to the addition of placebo to a regimen of pertuzumab and trastuzumab combined with a taxane (paclitaxel or docetaxel).
IV. To determine whether the addition of atezolizumab to a regimen of pertuzumab and trastuzumab combined with a taxane (paclitaxel or docetaxel) will decrease the incidence of subsequent brain metastases in patients without known brain metastases at study entry relative to the addition of placebo to a regimen of pertuzumab and trastuzumab combined with a taxane (paclitaxel or docetaxel).
V. To determine whether the addition of atezolizumab to a regimen of pertuzumab and trastuzumab combined with a taxane (paclitaxel or docetaxel) will contribute to increased patient-reported fatigue in comparison to the addition of placebo to a regimen of pertuzumab and trastuzumab combined with a taxane (paclitaxel or docetaxel).
VI. To determine the utility of PD-L1 immunohistochemistry (IHC) staining as a predictive and prognostic biomarker associated with clinical response, as assessed by investigator using RECIST 1.1 criteria, to atezolizumab in combination with trastuzumab and pertuzumab combined with a taxane (paclitaxel or docetaxel).
VII. To determine the immune-related toxicity profile of the two treatment regimens.
VIII. To determine the cardiac safety profile of the two treatment regimens.

EXPLORATORY OBJECTIVES:
I. To determine whether the addition of atezolizumab to a regimen of pertuzumab and trastuzumab combined with a taxane (paclitaxel or docetaxel) will improve the progression-free survival and overall objective response, assessed by investigator using immune-modified RECIST (iRECIST) criteria, relative to the addition of a placebo to a regimen of pertuzumab and trastuzumab combined with a taxane (paclitaxel or docetaxel).
II. To identify potential biomarkers that can predict benefit from the addition of atezolizumab in patients with newly documented HER2-positive measurable metastatic breast cancer treated with a regimen of pertuzumab and trastuzumab combined with a taxane (paclitaxel or docetaxel).
III. To explore the toxicity profile of the two treatment regimens using patient-reported symptomatic adverse events in addition to standard adverse event reports.
IV. To determine the feasibility and added value of frequent assessment of toxicity using Patient Reported Outcomes (PRO)-Common Terminology Criteria for Adverse Events (CTCAE) with electronic(e)PRO reporting.

OUTLINE:
STEP 1: Patients receive pertuzumab intravenously (IV) over 30-60 minutes on days 1 and 22, trastuzumab IV over 30-90 minutes on days 1 and 22, and paclitaxel IV over 60 minutes on days 1, 8, 15, 22, 29, and 36 or docetaxel IV over 60 minutes on days 1 and 22. Treatment continues for 6 weeks in the absence of disease progression or unacceptable toxicity.

STEP 2: Patients are randomized to 1 of 2 arms.

ARM I: Patients receive pertuzumab IV over 30-60 minutes on days 1 and 22, trastuzumab IV over 30-90 minutes on days 1 and 22, and paclitaxel IV over 60 minutes on days 1, 8, 15, 22, 29, and 36 or docetaxel IV over 60 minutes on days 1 and 22. Cycles repeat every 6 weeks in the absence of disease progression or unacceptable toxicity. Patients also receive atezolizumab IV over 30-60 minutes on day 22 of cycle 1 and days 1 and 22 of subsequent cycles. Cycles repeat every 6 weeks for 2 years in the absence of disease progression or unacceptable toxicity.

ARM II: Patients receive pertuzumab, trastuzumab, and paclitaxel or docetaxel as in Arm I. Patients also receive placebo IV 30-60 minutes on day 22 of cycle 1 and days 1 and 22 of subsequent cycles. Cycles repeat every 6 weeks for 2 years in the absence of disease progression or unacceptable toxicity.

After completion of study treatment, patients are followed up every 3 months for 3 years and then every 6 months for 4 years.

Eligibility

  1. The patient must have signed and dated an Institutional Review Board (IRB)-approved consent form that conforms to federal and institutional guidelines
  2. Patient must have an Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1
  3. Histologically confirmed adenocarcinoma of the breast with locally recurrent, unresectable disease or metastatic disease outside the central nervous system (CNS) confirmed as described below; eligible patients include those with either: * De novo metastatic disease presenting without prior history of HER2-positive breast cancer: ** Diagnosis should have been made from a biopsy of a metastatic disease site, but biopsy from the breast primary or involved regional lymph nodes is acceptable if biopsy of the metastatic sites was thought to carry excessive risk for the patient * Locally recurrent or metastatic disease following prior therapy for early breast cancer: ** Diagnosis must have been made from the biopsy of the locally recurrent or metastatic disease ** There must be an interval of >= 6 months between completion of neoadjuvant/adjuvant HER2-targeted therapy and documentation of locally recurrent or metastatic HER2-positive disease by biopsy
  4. Patients must have measurable disease based on RECIST 1.1, as determined by the site, which has not been irradiated to be eligible
  5. Patients with brain metastases are eligible if they meet ALL the following criteria: * Four or fewer metastatic sites to CNS * Largest unexcised tumor does not exceed 3 cm * No metastases to brain stem, midbrain, pons, medulla or the optic nerves and chiasm * Must have measurable disease outside the CNS, based on RECIST 1.1, as determined by the site, which has not been irradiated * If patient presented with symptoms from CNS metastases, the symptoms must have resolved with initiation of steroids and initial local therapy (surgery, radiation therapy, or both) * Must have been evaluated by Medical Oncologist and plan is to administer trastuzumab, pertuzumab, and a taxane as first-line systemic therapy * May have received administration of trastuzumab OR lapatinib concurrently with radiation therapy for brain metastases. Toxicities related to lapatinib if administered, should be =< grade 1 per the CTCAE v5.0, and the lapatinib must have been completed at least 2 weeks prior to study entry * No history of intracranial hemorrhage or spinal cord hemorrhage * No neurosurgical resection or brain biopsy within 10 days prior to study entry
  6. After study entry and before randomization, send tissue for central HER2 confirmation; a tumor specimen obtained at the time of diagnosis of locally recurrent or metastatic disease must have been determined to be HER2-positive based on local testing according to American Society of Clinical Oncology/College of American Pathologists (ASCO/CAP) guidelines (Wolff 2018); HER2 status should initially be assessed using an Food and Drug Administration (FDA)-cleared IHC assay; positive is defined as IHC 3+ staining intensity; if HER2 IHC results are equivocal (2+), then HER2 status will be determined using a FDA-cleared HER2 in situ hybridization (ISH) test according to ASCO/CAP guidelines; Note: Once HER2-positive is confirmed on central testing, patients will be randomized to atezolizumab/placebo; randomization within 14 days from study entry will ensure that the Pharmaceutical Management Branch (PMB)-supplied agents will be received at the site for treatment on day 22 of cycle 1
  7. The tumor specimen obtained at the time of diagnosis used for HER2 testing must also have central testing for PD-L1 status; patients will be eligible irrespective of PD-L1 testing result including PD-L1 indeterminant
  8. The tumor specimen obtained at the time of diagnosis used for HER2 and PD-L1 testing should also have central testing for estrogen receptor (ER) and progesterone receptor (PgR) according to current ASCO/CAP guideline recommendations for hormone receptor testing; patients with < 1% ER and PgR staining by IHC will be classified as negative; if enough material for central confirmation of ER and PgR is unavailable, local testing results for ER and PgR may be used for eligibility
  9. Localized palliative radiation therapy to sites of non-measurable disease is allowed for symptom management and may begin prior to study entry and continue following study entry while receiving study therapy
  10. Patients must have imaging of the chest/abdomen/pelvis, preferably with a computed tomography (CT) scan, and a bone scan within 5 weeks prior to study entry; (NOTE: if a patient is unable to receive CT contrast, a magnetic resonance imaging [MRI] of the abdomen/pelvis and non-contrast chest CT should be performed; positron emission tomography/computed tomography [PET/CT] is not an acceptable alternative)
  11. MRI of the brain (or contrast CT scan of the brain if patients are unable to undergo MRI) must be obtained in patients with symptoms suggesting possible central nervous system (CNS) metastatic disease; neuroimaging is recommended but not required in asymptomatic patients
  12. Absolute neutrophil count (ANC) must be >= 1200/mm^3 (within 14 days prior to study entry)
  13. Platelet count must be >= 100,000/mm^3 (within 14 days prior to study entry)
  14. Hemoglobin must be >= 8 g/dL (within 14 days prior to study entry)
  15. Total bilirubin must be =< 1.5 x upper limit of normal (ULN) for the lab or direct bilirubin =< ULN for patients with bilirubin levels > 1.5 x ULN (within 14 days prior to study entry)
  16. Aspartate aminotransferase (AST) and alanine aminotransaminase (ALT) must be =< 2.5 x ULN for the lab or =< 5 x ULN for patients with liver metastases (within 14 days prior to study entry)
  17. Serum creatinine =< 1.5 x ULN or measured or calculated creatinine clearance >= 50 mL/min using the Cockroft-Gault formula for patients with creatinine levels > 1.5 x ULN for the lab (within 14 days prior to study entry)
  18. Patients not receiving anti-coagulant therapy must have prothrombin time (PT) and international normalized ratio (INR) =< 1.5 x ULN within 14 days prior to study entry; for laboratories that do not report an ULN for the INR assay, use =< 1.5 as the value for the ULN; patients receiving anti-coagulants should have a baseline INR assessed, but the value does not affect eligibility
  19. A serum thyroid-stimulating hormone (TSH) and AM (preferably in morning) cortisol must be obtained within 14 days prior to study entry to obtain a baseline value; patients with abnormal TSH or AM cortisol baseline levels should be further evaluated and managed per institutional standards; asymptomatic patients who require initiation or adjustment of medication or are followed without initiating treatment based on endocrinologist’s recommendations are eligible
  20. Left ventricular ejection fraction (LVEF) assessment must be performed within 6 weeks prior to study entry; (LVEF assessment performed by echocardiogram is preferred; however, multigated acquisition scan (MUGA) scan may be substituted based on institutional preferences); the LVEF must be >= 50% regardless of the cardiac imaging facility's lower limit of normal
  21. Administration of atezolizumab may have an adverse effect on pregnancy and poses a risk to the human fetus, including embryo-lethality; women of child-bearing potential and men must agree to use adequate contraception (non-hormonal or barrier method of birth control; abstinence) prior to study entry, for the duration of study participation, and for 5 months (150 days) after the last dose of atezolizumab/placebo and 7 months after the last dose of trastuzumab and pertuzumab; 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
  22. Human immunodeficiency virus (HIV)-infected patients on effective anti-retroviral therapy with undetectable viral load within 6 months of study entry are eligible for this trial

Treatment Sites in Georgia

Atlanta Cancer Care - Conyers


1498 Klondike Road
Suite 106
Conyers, GA 30094
404-303-3355
www.atlantacancercare.com

Atlanta Cancer Care - Decatur


2545 Lawrenceville Highway
Suite 300
Decatur, GA 30033
404-303-3355
www.atlantacancercare.com

Doctors:

Lijo Simpson MD

Atlanta Cancer Care - Stockbridge


7813 Spivey Station Boulevard
Suite 210
Jonesboro, GA 30236
678 466-2069
www.atlantacancercare.com

Doctors:

Gurinderjit K. Sidhu MD
Lijo Simpson MD

Georgia Cancer Specialists - CenterPointe


1100 Johnson Ferry Road
Suite 600
Sandy Springs, GA 30342
404-256-4777 ext 9242
www.gacancer.com

Doctors:

Rodolfo E. Bordoni MD
Pradeep C. Jolly MD

Georgia Cancer Specialists - Macon-Coliseum


308 Coliseum Drive
Suite 120
Macon, GA 31217
478-745-6130 x8152
www.gacancer.com

**Clinical trials are research studies that involve people. These studies test new ways to prevent, detect, diagnose, or treat diseases. People who take part in cancer clinical trials have an opportunity to contribute to scientists’ knowledge about cancer and to help in the development of improved cancer treatments. They also receive state-of-the-art care from cancer experts... Click here to learn more about clinical trials.
Georgia CORE

 

Advancing Cancer Care through Partnerships and Innovation

Georgia CORE is a statewide nonprofit that leverages partnerships and innovation to attract more clinical trials, increase research, and promote education and early detection to improve cancer care for Georgians in rural, urban, and suburban communities across the state.