Anatomic Stage IV Breast Cancer AJCC v8Phase 2NCT05554354
Testing the Use of Fulvestrant and Binimetinib Targeted Treatment for NF1 Mutation in Hormone Receptor-Positive Metastatic Breast Cancer (A ComboMATCH Treatment Trial)
A Phase 2 study testing Binimetinib, Biopsy Procedure and Biospecimen Collection in people with Anatomic Stage IV Breast Cancer AJCC v8 and Metastatic HER2-Negative Breast Carcinoma, run by National Cancer Institute (NCI) at 196 sites in 2 countries.
Trial summary
This phase II ComboMATCH treatment trial compares the usual treatment alone (fulvestrant) to using binimetinib plus the usual treatment in patients with hormone receptor positive breast cancer that has spread from where it first started to other places in the body (metastatic) and has an NF1 genetic change. Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Anatomic Stage IV Breast Cancer AJCC v8, Metastatic HER2-Negative Breast Carcinoma, Metastatic Hormone Receptor-Positive Breast Carcinoma
- What is being tested?
- Binimetinib, Biopsy Procedure and Biospecimen Collection
- Type of treatment
- Surgery or procedure
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 1 participants
- Where
- 196 sitesin 2 countries
- Study dates
- 13 Sep 2024to 4 Apr 2025
- Phase
- Phase 2
- Are there results?
- Yes, posted in the registrySummary in the doctors' view
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Patient must have enrolled onto EAY191 and must have been given a treatment assignment to ComboMATCH to EAY191-N2 based on the presence of an actionable mutation as defined in EAY191
- The patient must be enrolled on the ComboMATCH Master Registration Trial EAY191
- Note: Patients must fulfill all eligibility criteria outlined in the ComboMATCH Registration Trial EAY191 at the time of registration to EAY191-N2. This includes submission of next-generation sequencing (NGS) data from one of the National Cancer Institute (NCI) credentialed designated laboratories for all potential patients prior to treatment trial assignment. Copy number and allele frequency cutoff as per the Registration protocol
- Patients must have disease that can be safely biopsied and agree to a pre-treatment biopsy or, if disease cannot be safely biopsied, have archival tissue available from within 12 months prior to the date of registration on the ComboMATCH registration trial (EAY191)
- Please note the current actionable marker of interest (aMOI)/actionable alteration list for this treatment trial can be found on the Cancer Trial Support Unit (CTSU) ComboMATCH Registration protocol page
- Please note novel/Dynamic aMOI can be submitted for review per the process described in the ComboMATCH Registration protocol
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- A COMBOMATCH TREATMENT TRIAL EAY191-N2 ELIGIBILITY CRITERIA:
- The patient or a legally authorized representative must provide study-specific informed consent prior to study entry and, for patients treated in the United States (U.S.), authorization permitting release of personal health information
- Age >= 18
- Eastern Cooperative Oncology Group (ECOG) performance status 0-2
- Histologically or cytologically confirmed invasive breast carcinoma
- Confirmed metastatic disease by either imaging or tissue diagnosis
- Measurable disease by Response Evaluation Criteria in Solid Tumors (RECIST) 1.1 and one additional lesion that can be biopsied (primary, metastatic both allowed)
- Patients must have inactivating or inferred inactivating NF1 alterations detected in tumor as determined by the ComboMATCH screening assessment
- The tumor must have been determined to be estrogen receptor (ER) and/or progesterone receptor (PgR) positive assessed by current American Society of Clinical Oncology (ASCO)/College of American Pathologists (CAP) guideline recommendations for hormone receptor testing. Patients with >= 1% ER or PgR staining by immunohistochemistry (IHC) are considered positive
- The tumor must have been determined to be HER2-negative by current ASCO/CAP guidelines
- Prior use of CDK4/6 inhibitor(i) is required
- Prior use of fulvestrant regardless of duration is allowed and will determine treatment assignment
- Up to one line of chemotherapy in metastatic setting is allowed
- Absolute neutrophil count >= 1,500/mm^3
- Platelet count >= 100,000/ mm^3
- Hemoglobin level >= 10 g/dL
- Creatinine clearance (CrCL) of ≥ 30 mL/min by the Cockcroft-Gault formula
- Total bilirubin level =< institutional upper limit of normal
- Aspartate aminotransferase (AST) and alanine aminotransferase (ALT) must be =< 5.0 x ULN
- For patients who will be assigned to Cohort 2 (fulvestrant-resistant), a left ventricular ejection fraction (LVEF) assessment must be performed within 12 weeks prior to registration. The LVEF must be >= 50% regardless of the cardiac imaging facility's lower limit of normal. (LVEF assessment performed by echocardiogram is preferred; however, MUGA scan may be substituted based on institutional/situational preferences)
- 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
- Human immunodeficiency virus (HIV)-infected patients on effective anti-retroviral therapy with undetectable viral load within 6 months of registration are eligible for this trial
- ELIGIBILITY CRITERIA FOR COHORT 1, TREATMENT REGIMEN 2 PATIENTS WHO MIGRATE TO COHORT 2: Cohort migration: Patients treated with control treatment fulvestrant who experience disease progression may be eligible to migrate to Cohort 2 and receive combination treatment with binimetinib and fulvestrant. Patients who choose to do so must meet laboratory values and performance status requirements below and should begin treatment within 28 days
- PATIENTS WHO MIGRATE TO COHORT 2: Patient's willingness to migrate to Cohort 2 affirmed
- PATIENTS WHO MIGRATE TO COHORT 2: The patient must have an ECOG performance status of 0-2
- PATIENTS WHO MIGRATE TO COHORT 2: Absolute neutrophil count >= 1,500/mm^3
- PATIENTS WHO MIGRATE TO COHORT 2: Platelet count >= 100,000/ mm^3
- PATIENTS WHO MIGRATE TO COHORT 2: Hemoglobin level >= 10 g/dL
- PATIENTS WHO MIGRATE TO COHORT 2: Total bilirubin level =< institutional upper limit of normal (ULN)
- PATIENTS WHO MIGRATE TO COHORT 2: AST and ALT must be =< 5.0 x ULN
- PATIENTS WHO MIGRATE TO COHORT 2: Creatinine clearance (CrCL) of ≥30 mL/min by the Cockcroft-Gault formula
- PATIENTS WHO MIGRATE TO COHORT 2: A LVEF performed within the last 3 months must be >= 50% regardless of the cardiac imaging facility's lower limit of normal (LVEF assessment performed by echocardiogram is preferred; however, MUGA scan may be substituted based on institutional/situational preferences)
- PATIENTS WHO MIGRATE TO COHORT 2: Pregnancy test according to institutional standards must be negative (for patients of childbearing potential only)
Who cannot join
- Concurrent anticancer therapy
- Active autoimmune disease requiring systemic treatment within the past 3 months, documented history of clinically severe autoimmune disease, or a syndrome that requires systemic steroids or immunosuppressive agents
- Active brain metastasis. Brain metastases that have been stable for at least 1 month after completion of treatment are not an exclusion criterion
- History of or evidence of retinal pathology on ophthalmologic examination that is considered a risk factor for neurosensory retinal detachment/central serous, chorioretinopathy (CSCR), retinal vein occlusion (RVO), or neovascular macular degeneration
- Patients will be excluded if they currently have the following risk factors for RVO that are documented prior to the enrollment:
- Known uncontrolled glaucoma with intra-ocular pressures >= 21 mmHg
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- Known serum cholesterol >= grade 2.
- Known hypertriglyceridemia >= grade 2
- Known hyperglycemia (fasting) >= grade 2
- Patients with baseline QT corrected for heart rate (QTc) > 500 ms, either induced by medication or congenital long QT syndrome will be excluded due to known side effects of binimetinib
- Nervous system disorder (paresthesia, peripheral motor neuropathy, or peripheral sensory neuropathy) >= grade 2
- 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
- Any other disease, metabolic dysfunction, physical examination finding, or clinical laboratory finding giving reasonable suspicion of a disease or condition that contraindicates the use of an investigational drug or that may affect the interpretation of the results or render the patient at high risk from treatment complications
- Other conditions that, in the opinion of the investigator, would preclude the patient from meeting the study requirements or interfere with interpretation of study results
- Pregnancy or lactation at the time of registration or intention to become pregnant during the study (Note: Pregnancy testing according to institutional standards for patients of childbearing potential)
- For binimetinib, highly effective contraception should be used for at least 30 days after the last dose, and patients should not breastfeed for 3 days after the last dose
- For fulvestrant, highly effective contraception should be used for 1 year after the last dose, and patients should not breastfeed for 1 year after the last dose
- Use of any investigational product within 30 days prior to study entry
- INELIGIBILITY CRITERIA FOR COHORT 1, TREATMENT REGIMEN 2 PATIENTS WHO MIGRATE TO COHORT 2
- PATIENTS WHO MIGRATE TO COHORT 2: Not a candidate for binimetinib in the opinion of the treating investigator
Trial locations and contacts
196 sites in 2 countries.
196 sites in 2 countries
United States192 sites
UPMC Altoona
Altoona, Pennsylvania, 16601
Community Hospital of Anaconda
Anaconda, Montana, 59711
UI Health Care Mission Cancer and Blood - Ankeny Clinic
Ankeny, Iowa, 50023
Trinity Health Saint Joseph Mercy Hospital Ann Arbor
Ann Arbor, Michigan, 48106
PCR Oncology
Arroyo Grande, California, 93420
Duluth Clinic Ashland
Ashland, Wisconsin, 54806
UM Sylvester Comprehensive Cancer Center at Aventura
Aventura, Florida, 33180
University of Maryland/Greenebaum Cancer Center
Baltimore, Maryland, 21201
Advocate Good Shepherd Hospital
Barrington, Illinois, 60010
Strecker Cancer Center-Belpre
Belpre, Ohio, 45714
Sanford Joe Lueken Cancer Center
Bemidji, Minnesota, 56601
National Institutes of Health Clinical Center
Bethesda, Maryland, 20892
Billings Clinic Cancer Center
Billings, Montana, 59101
University of Alabama at Birmingham Cancer Center
Birmingham, Alabama, 35233
Sanford Bismarck Medical Center
Bismarck, North Dakota, 58501
Saint Alphonsus Cancer Care Center-Boise
Boise, Idaho, 83706
Saint Luke's Cancer Institute - Boise
Boise, Idaho, 83712
Tufts Medical Center
Boston, Massachusetts, 02111
Bozeman Health Deaconess Hospital
Bozeman, Montana, 59715
Lafayette Family Cancer Center-EMMC
Brewer, Maine, 04412
Trinity Health IHA Medical Group Hematology Oncology - Brighton
Brighton, Michigan, 48114
Trinity Health Medical Center - Brighton
Brighton, Michigan, 48114
Bryn Mawr Hospital
Bryn Mawr, Pennsylvania, 19010
Aurora Cancer Care-Southern Lakes VLCC
Burlington, Wisconsin, 53105
Saint Alphonsus Cancer Care Center-Caldwell
Caldwell, Idaho, 83605
Trinity Health IHA Medical Group Hematology Oncology - Canton
Canton, Michigan, 48188
Trinity Health Medical Center - Canton
Canton, Michigan, 48188
Aultman Health Foundation
Canton, Ohio, 44710
Miami Valley Hospital South
Centerville, Ohio, 45459
Chelsea Hospital
Chelsea, Michigan, 48118
Trinity Health IHA Medical Group Hematology Oncology - Chelsea Hospital
Chelsea, Michigan, 48118
Northwestern University
Chicago, Illinois, 60611
John H Stroger Jr Hospital of Cook County
Chicago, Illinois, 60612
Advocate Illinois Masonic Medical Center
Chicago, Illinois, 60657
Adena Regional Medical Center
Chillicothe, Ohio, 45601
Siteman Cancer Center at Saint Peters Hospital
City of Saint Peters, Missouri, 63376
Kootenai Health - Coeur d'Alene
Coeur d'Alene, Idaho, 83814
Ohio State University Comprehensive Cancer Center
Columbus, Ohio, 43210
Mount Carmel East Hospital
Columbus, Ohio, 43213
The Mark H Zangmeister Center
Columbus, Ohio, 43219
Mercy Hospital
Coon Rapids, Minnesota, 55433
UM Sylvester Comprehensive Cancer Center at Coral Gables
Coral Gables, Florida, 33146
Siteman Cancer Center at West County Hospital
Creve Coeur, Missouri, 63141
AMG Crystal Lake - Oncology
Crystal Lake, Illinois, 60014
Aurora Saint Luke's South Shore
Cudahy, Wisconsin, 53110
UPMC Western Maryland
Cumberland, Maryland, 21502
Carle at The Riverfront
Danville, Illinois, 61832
Miami Valley Hospital
Dayton, Ohio, 45409
Premier Blood and Cancer Center
Dayton, Ohio, 45409
Dayton Physician LLC - Englewood
Dayton, Ohio, 45415
Miami Valley Hospital North
Dayton, Ohio, 45415
Corewell Health Dearborn Hospital
Dearborn, Michigan, 48124
Essentia Health - Deer River Clinic
Deer River, Minnesota, 56636
UM Sylvester Comprehensive Cancer Center at Deerfield Beach
Deerfield Beach, Florida, 33442
Northwestern Medicine Cancer Center Kishwaukee
DeKalb, Illinois, 60115
UI Health Care Mission Cancer and Blood - Des Moines Clinic
Des Moines, Iowa, 50309
Mercy Medical Center - Des Moines
Des Moines, Iowa, 50314
Epic Care-Dublin
Dublin, California, 94568
Essentia Health Cancer Center
Duluth, Minnesota, 55805
Fairview Southdale Hospital
Edina, Minnesota, 55435
Swedish Cancer Institute-Edmonds
Edmonds, Washington, 98026
Carle Physician Group-Effingham
Effingham, Illinois, 62401
Advocate Sherman Hospital
Elgin, Illinois, 60123
Epic Care Partners in Cancer Care
Emeryville, California, 94608
UPMC Hillman Cancer Center Erie
Erie, Pennsylvania, 16505
Sanford Broadway Medical Center
Fargo, North Dakota, 58122
Sanford Roger Maris Cancer Center
Fargo, North Dakota, 58122
Corewell Health Farmington Hills Hospital
Farmington Hills, Michigan, 48336
Cancer Hematology Centers - Flint
Flint, Michigan, 48503
Genesee Hematology Oncology PC
Flint, Michigan, 48503
Genesys Hurley Cancer Institute
Flint, Michigan, 48503
Hurley Medical Center
Flint, Michigan, 48503
Atrium Medical Center-Middletown Regional Hospital
Franklin, Ohio, 45005-1066
Saint Luke's Cancer Institute - Fruitland
Fruitland, Idaho, 83619
Northwestern Medicine Cancer Center Delnor
Geneva, Illinois, 60134
Aurora Health Care Germantown Health Center
Germantown, Wisconsin, 53022
Aurora Cancer Care-Grafton
Grafton, Wisconsin, 53024
Benefis Sletten Cancer Institute
Great Falls, Montana, 59405
Aurora BayCare Medical Center
Green Bay, Wisconsin, 54311
UPMC Cancer Centers - Arnold Palmer Pavilion
Greensburg, Pennsylvania, 15601
Miami Valley Cancer Care and Infusion
Greenville, Ohio, 45331
Gulfport Memorial Hospital
Gulfport, Mississippi, 39502
Advocate South Suburban Hospital
Hazel Crest, Illinois, 60429
OptumCare Cancer Care at Seven Hills
Henderson, Nevada, 89052
Essentia Health Hibbing Clinic
Hibbing, Minnesota, 55746
M D Anderson Cancer Center
Houston, Texas, 77030
Swedish Cancer Institute-Issaquah
Issaquah, Washington, 98029
Mayo Clinic in Florida
Jacksonville, Florida, 32224-9980
Logan Health Medical Center
Kalispell, Montana, 59901
Aurora Cancer Care-Kenosha South
Kenosha, Wisconsin, 53142
Kettering Medical Center
Kettering, Ohio, 45429
Kingman Regional Medical Center
Kingman, Arizona, 86401
Gundersen Lutheran Medical Center
La Crosse, Wisconsin, 54601
Northwestern Medicine Lake Forest Hospital
Lake Forest, Illinois, 60045
Fairfield Medical Center
Lancaster, Ohio, 43130
University of Michigan Health - Sparrow Lansing
Lansing, Michigan, 48912
OptumCare Cancer Care at Charleston
Las Vegas, Nevada, 89102
OptumCare Cancer Care at Fort Apache
Las Vegas, Nevada, 89148
University of Kentucky/Markey Cancer Center
Lexington, Kentucky, 40536
AMG Libertyville - Oncology
Libertyville, Illinois, 60048
Condell Memorial Hospital
Libertyville, Illinois, 60048
Trinity Health Saint Mary Mercy Livonia Hospital
Livonia, Michigan, 48154
Henry Ford Saint John Hospital - Macomb Medical
Macomb, Michigan, 48044
University of Wisconsin Carbone Cancer Center - Eastpark Medical Center
Madison, Wisconsin, 53718
University of Wisconsin Carbone Cancer Center - University Hospital
Madison, Wisconsin, 53792
Saint John's Hospital - Healtheast
Maplewood, Minnesota, 55109
Marietta Memorial Hospital
Marietta, Ohio, 45750
Aurora Bay Area Medical Group-Marinette
Marinette, Wisconsin, 54143
Contra Costa Regional Medical Center
Martinez, California, 94553-3156
Memorial Hospital
Marysville, Ohio, 43040
Carle Physician Group-Mattoon/Charleston
Mattoon, Illinois, 61938
UPMC Hillman Cancer Center at Rocco And Nancy Ortenzio Cancer Pavilion
Mechanicsburg, Pennsylvania, 17050
Riddle Memorial Hospital
Media, Pennsylvania, 19063
Saint Luke's Cancer Institute - Meridian
Meridian, Idaho, 83642
University of Miami Miller School of Medicine-Sylvester Cancer Center
Miami, Florida, 33136
UM Sylvester Comprehensive Cancer Center at Kendall
Miami, Florida, 33176
Aurora Cancer Care-Milwaukee
Milwaukee, Wisconsin, 53209
Aurora Saint Luke's Medical Center
Milwaukee, Wisconsin, 53215
Aurora Sinai Medical Center
Milwaukee, Wisconsin, 53233
Abbott-Northwestern Hospital
Minneapolis, Minnesota, 55407
Community Medical Center
Missoula, Montana, 59804
UPMC Hillman Cancer Center - Monroeville
Monroeville, Pennsylvania, 15146
Knox Community Hospital
Mount Vernon, Ohio, 43050
Saint Alphonsus Cancer Care Center-Nampa
Nampa, Idaho, 83687
Saint Luke's Cancer Institute - Nampa
Nampa, Idaho, 83687
Licking Memorial Hospital
Newark, Ohio, 43055
Providence Newberg Medical Center
Newberg, Oregon, 97132
Advocate Christ Medical Center
Oak Lawn, Illinois, 60453-2699
University of Oklahoma Health Sciences Center
Oklahoma City, Oklahoma, 73104
Saint Alphonsus Cancer Care Center-Ontario
Ontario, Oregon, 97914
Saint Joseph Hospital - Orange
Orange, California, 92868
Providence Willamette Falls Medical Center
Oregon City, Oregon, 97045
Northwestern Medicine Orland Park
Orland Park, Illinois, 60462
Vince Lombardi Cancer Clinic - Oshkosh
Oshkosh, Wisconsin, 54904
Paoli Memorial Hospital
Paoli, Pennsylvania, 19301
Advocate Lutheran General Hospital
Park Ridge, Illinois, 60068
Mercy Health - Perrysburg Hospital
Perrysburg, Ohio, 43551
Thomas Jefferson University Hospital
Philadelphia, Pennsylvania, 19107
University of Pittsburgh Cancer Institute (UPCI)
Pittsburgh, Pennsylvania, 15232
UPMC-Passavant Hospital
Pittsburgh, Pennsylvania, 15237
UM Sylvester Comprehensive Cancer Center at Plantation
Plantation, Florida, 33324
Providence Portland Medical Center
Portland, Oregon, 97213
Providence Saint Vincent Medical Center
Portland, Oregon, 97225
Southern Ohio Medical Center
Portsmouth, Ohio, 45662
Kootenai Clinic Cancer Services - Post Falls
Post Falls, Idaho, 83854
Aurora Cancer Care-Racine
Racine, Wisconsin, 53406
Valley Medical Center
Renton, Washington, 98055
Virginia Cancer Institute
Richmond, Virginia, 23229
VCU Massey Cancer Center at Stony Point
Richmond, Virginia, 23235
Virginia Commonwealth University/Massey Cancer Center
Richmond, Virginia, 23298
Mayo Clinic in Rochester
Rochester, Minnesota, 55905
Corewell Health William Beaumont University Hospital
Royal Oak, Michigan, 48073
MyMichigan Medical Center Saginaw
Saginaw, Michigan, 48601
Oncology Hematology Associates of Saginaw Valley PC
Saginaw, Michigan, 48604
Park Nicollet Clinic - Saint Louis Park
Saint Louis Park, Minnesota, 55416
Regions Hospital
Saint Paul, Minnesota, 55101
United Hospital
Saint Paul, Minnesota, 55102
Kootenai Clinic Cancer Services - Sandpoint
Sandpoint, Idaho, 83864
Essentia Health Sandstone
Sandstone, Minnesota, 55072
Saint John's Cancer Institute
Santa Monica, California, 90404
Vince Lombardi Cancer Clinic-Sheboygan
Sheboygan, Wisconsin, 53081
Memorial Hospital East
Shiloh, Illinois, 62269
Sanford Cancer Center Oncology Clinic
Sioux Falls, South Dakota, 57104
Sanford USD Medical Center - Sioux Falls
Sioux Falls, South Dakota, 57117-5134
VCU Community Memorial Health Center
South Hill, Virginia, 23970
Springfield Regional Cancer Center
Springfield, Ohio, 45504
Springfield Regional Medical Center
Springfield, Ohio, 45504
Washington University School of Medicine
St Louis, Missouri, 63110
Siteman Cancer Center-South County
St Louis, Missouri, 63129
Siteman Cancer Center at Christian Hospital
St Louis, Missouri, 63136
Aurora Medical Center in Summit
Summit, Wisconsin, 53066
MyMichigan Medical Center Tawas
Tawas City, Michigan, 48764
Montefiore Medical Center-Einstein Campus
The Bronx, New York, 10461
Mercy Health - Saint Anne Hospital
Toledo, Ohio, 43623
Corewell Health Beaumont Troy Hospital
Troy, Michigan, 48085
Upper Valley Medical Center
Troy, Ohio, 45373
Saint Luke's Cancer Institute - Twin Falls
Twin Falls, Idaho, 83301
Vince Lombardi Cancer Clinic-Two Rivers
Two Rivers, Wisconsin, 54241
Carle Cancer Center
Urbana, Illinois, 61801
Essentia Health Virginia Clinic
Virginia, Minnesota, 55792
Epic Care Cyberknife Center
Walnut Creek, California, 94597
Northwestern Medicine Cancer Center Warrenville
Warrenville, Illinois, 60555
Aurora Cancer Care-Milwaukee West
Wauwatosa, Wisconsin, 53226
Aurora West Allis Medical Center
West Allis, Wisconsin, 53227
Saint Mary's Oncology/Hematology Associates of West Branch
West Branch, Michigan, 48661
Saint Ann's Hospital
Westerville, Ohio, 43081
Asplundh Cancer Pavilion
Willow Grove, Pennsylvania, 19090
Lankenau Medical Center
Wynnewood, Pennsylvania, 19096
North Star Lodge Cancer Center at Yakima Valley Memorial Hospital
Yakima, Washington, 98902
Huron Gastroenterology PC
Ypsilanti, Michigan, 48106
Trinity Health IHA Medical Group Hematology Oncology Ann Arbor Campus
Ypsilanti, Michigan, 48197
Genesis Healthcare System Cancer Care Center
Zanesville, Ohio, 43701
Puerto Rico4 sites
Puerto Rico Hematology Oncology Group
Bayamón, 00961
Doctors Cancer Center
Manati, 00674
Centro Comprensivo de Cancer de UPR
San Juan, 00927
PROncology
San Juan, 00927
About this study
Official title: Phase 2 Trial of Fulvestrant and Binimetinib in Patients With Hormone Receptor-Positive Metastatic Breast Cancer With Inactivating or Inferred Inactivating NF1 Alterations: A ComboMATCH Treatment Trial
This phase II ComboMATCH treatment trial compares the usual treatment alone (fulvestrant) to using binimetinib plus the usual treatment in patients with hormone receptor positive breast cancer that has spread from where it first started to other places in the body (metastatic) and has an NF1 genetic change. Fulvestrant is a hormonal therapy that binds to estrogen receptors in tumor cells, resulting in estrogen receptor destruction and decreased estrogen binding, which may inhibit the growth of estrogen-sensitive tumor cells. Binimetinib is a targeted therapy that may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth. The addition of binimetinib to fulvestrant in breast cancers with an NF1 genetic change could increase the percentage of tumors that shrink as well as lengthen the time that the tumors remain stable (without progression) as compared to fulvestrant alone.
Read the detailed description
PRIMARY OBJECTIVES:
- To determine whether the combination of fulvestrant and binimetinib improves progression-free survival (PFS) compared to treatment with fulvestrant alone in patients not previously treated with fulvestrant. (Cohort 1) II. To determine whether overall response rate (ORR) within 4 months in patients who have previously progressed on a fulvestrant-containing regimen is greater than 10%, as a historical comparison, when these patients receive combination fulvestrant and binimetinib therapy. (Cohort 2)
SECONDARY OBJECTIVES:
- To estimate ORR at any time after the start of the treatment for Cohort 2 and separately for the two arms in Cohort 1.
II. To estimate PFS distribution in Cohort 2. III. To estimate clinical benefit rate separately for the two arms in Cohort 1 and Cohort 2.
IV. To determine the safety and toxicity profile in both cohorts. V. To estimate the overall survival (OS) in both cohorts. VI. Collect tissue and provide it to the ComboMATCH Registration Protocol to assess concordance between the diagnostic tumor mutation profile generated by the Designated Laboratories, the pre-treatment biopsy mutation profile, and the pre-treatment circulating tumor deoxyribonucleic acid (DNA) (ctDNA) mutation profile from plasma, as described in ComboMATCH Registration Protocol. For this treatment substudy, the outcome objective will be to report the proportion of cases providing sufficient tissue for that integrated scientific activity in the ComboMATCH Registration Protocol.
EXPLORATORY BIOMARKER OBJECTIVES:
- To analyze the cell-free (cf)DNA at progression to determine the changes in cfDNA profile in order to understand blood-based mutation dynamics.
II. To analyze RNAseq at progression to determine potential pathways that are altered that may contribute to the sensitivity/resistance.
III. To discover/detect novel biomarkers using microscaled proteogenomics by analyzing the proteins and phosphor-proteins along with genomics to determine potential pathways that may correlate with the response to the combination treatment.
IV. To detect the loss of NF1, using immunohistochemistry staining to precisely measure the level of the NF1 protein.
- To determine the variant allele frequency (VAF) of mutant NF1 measuring by using droplet digital polymerase chain reaction (ddPCR) for the targeted NF1 gene level.
OUTLINE: Patients who are fulvestrant naive are assigned to Cohort I, while patients who are fulvestrant resistant are assigned to Cohort II.
COHORT I: Patients are randomized to 1 of 2 arms.
ARM I: Patients receive fulvestrant intramuscularly (IM) on day 1 and day 15 of cycle 1 and day 1 of subsequent cycles and binimetinib orally (PO) twice daily (BID) on days 15 to 28 of cycle 1 and day 1 through 28 of subsequent cycles. Cycles repeat every 28 days in the absence of disease progression or unacceptable toxicity. Patients also undergo a computed tomography (CT), magnetic resonance imaging (MRI), or bone scan, echocardiography (ECHO) or multi-gated acqusition scan (MUGA), and tumor biopsy, as well as possible blood sample collection during screening and on study.
ARM II: Patients receive fulvestrant IM on day 1 and day 15 of cycle 1 and day 1 of subsequent cycles. Cycles repeat every 28 days in the absence of disease progression or unacceptable toxicity. Patients who progress on fulvestrant alone may migrate to cohort II if they meet the migration eligibility criteria. Patients not willing to migrate to cohort II will have further therapy at the investigator's discretion. Patients undergo a CT, MRI, or bone scan and tumor biopsy, as well as ECHO or MUGA and possible blood sample collection during screening and on study.
COHORT II: Patients receive fulvestrant IM on day 1 of each cycle and binimetinib PO BID on days 15-28 of cycle 1 and day 1 through 28 of subsequent cycles. Cycles repeat every 28 days in the absence of disease progression or unacceptable toxicity. Patients undergo a CT, MRI, or bone scan, ECHO or MUGA and tumor biopsy, as well as possible blood sample collection during screening and on study.
Upon completion of study treatment patients are followed up every 6 months for 5 years.
- Conditions
- Anatomic Stage IV Breast Cancer AJCC v8, Metastatic HER2-Negative Breast Carcinoma, Metastatic Hormone Receptor-Positive Breast Carcinoma
- Being tested
- Binimetinib, Biopsy Procedure, Biospecimen Collection, Bone Scan, Computed Tomography
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
BinimetinibDrug
Also called ARRY 162, ARRY 438162, ARRY-162, ARRY-438162
Given PO
Biopsy ProcedureProcedure or surgery
Also called Biopsy, BIOPSY_TYPE, Bx
Undergo tumor biopsy
Biospecimen CollectionProcedure or surgery
Also called Biological Sample Collection, Biospecimen Collected, Specimen Collection
Undergo blood sample collection
Bone ScanProcedure or surgery
Also called Bone Scintigraphy
Undergo bone scan
Computed TomographyProcedure or surgery
Also called CAT, CAT Scan, Computed Axial Tomography, Computerized Axial Tomography
Undergo CT scan
Echocardiography TestProcedure or surgery
Also called EC, Echocardiography
Undergo ECHO
FulvestrantDrug
Also called Faslodex, Faslodex(ICI 182,780), ICI 182,780, ICI 182780
Given IM
Magnetic Resonance ImagingProcedure or surgery
Also called Magnetic Resonance, Magnetic Resonance Imaging (MRI), Magnetic resonance imaging (procedure), Magnetic Resonance Imaging Scan
Undergo MRI
Multigated Acquisition ScanProcedure or surgery
Also called Blood Pool Scan, Equilibrium Radionuclide Angiography, Gated Blood Pool Imaging, Gated Heart Pool Scan
Undergo MUGA
| Study group | Role | What they receive |
|---|---|---|
| Cohort I (Arm I) (fulvestrant, binimetinib) | Experimental | Patients receive fulvestrant IM on day 1 and day 15 of cycle 1 and day 1 of subsequent cycles and binimetinib PO BID on days 15 to 28 of cycle 1 and day 1 through 28 of subsequent cycles. Cycles repeat every 28 days in the absence of disease progression or unacceptable toxicity. Patients also undergo a CT, MRI, or bone scan, ECHO or MUGA, and tumor biopsy, as well as possible blood sample collection during screening and on study. Receives: Drug: Binimetinib; Procedure: Biopsy Procedure; Procedure: Biospecimen Collection; Procedure: Bone Scan; Procedure: Computed Tomography; Procedure: Echocardiography Test; Drug: Fulvestrant; Procedure: Magnetic Resonance Imaging; Procedure: Multigated Acquisition Scan |
| Cohort I (Arm II) | Active comparator | Patients receive fulvestrant IM on day 1 and day 15 of cycle 1 and day 1 of subsequent cycles. Cycles repeat every 28 days in the absence of disease progression or unacceptable toxicity. Patients who progress on fulvestrant alone may migrate to cohort II if they meet the migration eligibility criteria. Patients not willing to migrate to cohort II will have further therapy at the investigator's discretion. Patients undergo a CT, MRI, or bone scan and tumor biopsy, as well as ECHO or MUGA and possible blood sample collection during screening and on study. Receives: Procedure: Biopsy Procedure; Procedure: Biospecimen Collection; Procedure: Bone Scan; Procedure: Computed Tomography; Procedure: Echocardiography Test; Drug: Fulvestrant; Procedure: Magnetic Resonance Imaging; Procedure: Multigated Acquisition Scan |
| Cohort II (fulvestrant, binimetinib) | Experimental | Patients receive fulvestrant IM on day 1 of each cycle and binimetinib PO BID on days 15-28 of cycle 1 and day 1 through 28 of subsequent cycles. Cycles repeat every 28 days in the absence of disease progression or unacceptable toxicity. Patients undergo a CT, MRI, or bone scan, ECHO or MUGA and tumor biopsy, as well as possible blood sample collection during screening and on study. Receives: Drug: Binimetinib; Procedure: Biopsy Procedure; Procedure: Biospecimen Collection; Procedure: Bone Scan; Procedure: Computed Tomography; Procedure: Echocardiography Test; Drug: Fulvestrant; Procedure: Magnetic Resonance Imaging; Procedure: Multigated Acquisition Scan |
What is being measured
The primary outcome is the main question the study is designed to answer.
Progression Free Survival (PFS) (Cohort I)
PFS of the two study arms will be compared by log-rank test (1-sided, alpha=0.1). Kaplan-Meier plot will be provided. Hazard ratio (HR) and the corresponding 95% confidence interval (CI) will be estimated by Cox proportional model using treatment as covariate.
Measured: The duration between randomization and progression or death from all cause, whichever happens first, assessed up to 5 years
Objective Response Rate (ORR) (Cohort II)
ORR is the percentage of patients who reaches a complete or partial response (defined by Response Evaluation Criteria in Solid Tumors [RECIST] version[v]1.1) within 4 months of the start of the treatment. ORR will be calculated as the proportion of patients achieved partial response (PR) or complete response (CR) within 4 months after the initiation of the treatment. ORR will be reported with corresponding 95% exact CI. Patients who have withdrawn from the study before any efficacy follow up are considered non-evaluable for clinical response and will be replaced.
Measured: Within 4 months of the start of treatment
Secondary outcomes (6)
ORR for Each Study Arm (Cohort I)
ORR is the percentage of patients who reach a complete or partial response (defined by RECIST v1.1) any time after the start of the treatment. ORR for each study arm will be calculated with corresponding 95% exact CI. Fisher exact test will be used to compare the ORR of the two study arms.
Measured: Any time after the start of the treatment, assessed up to 5 years
ORR (Cohort II)
ORR is the percentage of patients who reach a complete or partial response (defined by RECIST v1.1) any time after the start of the treatment.
Measured: Any time after the start of the treatment, assessed up to 5 years
Clinical Benefit Rate
Defined as proportion of patients who achieved a CR, PR, or stable disease defined by RECIST criteria any time after the start of the treatment. Clinical benefit rate will be analyzed for each arm of cohort I and cohort II as described for ORR. ORR for each study arm will be calculated with corresponding 95% exact CI. Fisher exact test will be used to compare the ORR of the two study arms.
Measured: Any time after the start of the treatment, assessed up to 5 years
PFS (Cohort II)
PFS for cohort II will be summarized using the Kaplan-Meier's method. Median PFS with corresponding 95% CI will be provided.
Measured: The duration between randomization and progression or death from all cause, whichever happens first, assessed up to 5 years
Overall Survival (OS)
OS for cohort I will be analyzed as described for PFS in cohort I and OS for cohort II will be analyzed as described for PFS in cohort II. PFS of the two study arms will be compared by log-rank test (1-sided, alpha=0.1). Kaplan-Meir plot will be provided. HR and the corresponding 95% CI will be estimated by Cox proportional model using treatment as covariate. PFS for Cohort 2 will be summarized using the Kaplan-Meir's method. Median PFS with corresponding 95% CI will be provided.
Measured: The duration between randomization and death of all causes, assessed up to 5 years
Incidence of Adverse Events
The grade of toxicity measurement will follow Common Terminology Criteria for Adverse Events (CTCAE) version 5.0. The distribution by treatment group of the highest grade of each CTCAEs experienced by each patient categorized will be tabulated. The tabulations will also be reviewed on a semi-annual basis by the Data Monitoring Committee. These tabulations will include summaries by system organ class and summaries by term under each system organ class.
Measured: Up to 5 years
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted26 Sep 2022
- Study start13 Sep 2024
- Primary completion4 Apr 2025
- Study completion4 Apr 2025
Why it stopped: Other - slow accrual
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Posted resultsParticipant flow, outcome measures and adverse events reported by the sponsor.
- Other trials for Anatomic Stage IV Breast Cancer AJCC v8Studies of the same condition, open and under way.
- More trials run by National Cancer Institute (NCI)The sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase 2
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Enrolment
- 1 participants (actual)
Sponsor and investigators
- Lead sponsor
- National Cancer Institute (NCI)
- Sponsor type
- US National Institutes of Health
- Collaborators
- NRG Oncology
- Responsible party
- Sponsor
- Investigators
- Bora Lim, Principal investigator, CenterThe University of Texas MD Anderson Cancer Center
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT05554354
- Sponsor's protocol ID
- NCI-2022-07265
- Other IDs
- NCI-2022-07265, EAY191-N2, EAY191-N2, U10CA180868
- Status last verified
- Aug 2025
- First submitted
- 22 Sep 2022
- Last updated
- 3 Mar 2026
- Results posted
- Yes, on ClinicalTrials.gov
- Data monitoring committee
- No
- FDA-regulated drug
- Yes
- FDA-regulated device
- No
- Individual data sharing
- Yes: 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.
Study at a glance
From the registry record, last updated by the sponsor on 3 Mar 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Phase 2 Trial of Fulvestrant and Binimetinib in Patients With Hormone Receptor-Positive Metastatic Breast Cancer With Inactivating or Inferred Inactivating NF1 Alterations: A ComboMATCH Treatment Trial
- ClinicalTrials.gov ID
- NCT05554354
- Acronym / sponsor ID
- NCI-2022-07265
- Conditions
- Anatomic Stage IV Breast Cancer AJCC v8, Metastatic HER2-Negative Breast Carcinoma, Metastatic Hormone Receptor-Positive Breast Carcinoma
- Phase
- Phase 2
- Study type
- Interventional
- Recruitment status
- TerminatedReason stopped: Other - slow accrual
- Enrolment
- 1 participants (actual)
- Lead sponsor
- National Cancer Institute (NCI)US National Institutes of Health
- Collaborators
- NRG Oncology
- Study start
- 13 Sep 2024 (actual)
- Primary completion
- 4 Apr 2025 (actual)
- Study completion
- 4 Apr 2025 (actual)
- First posted
- 26 Sep 2022 (actual)
- Results
- Posted 3 Mar 2026
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
This phase II ComboMATCH treatment trial compares the usual treatment alone (fulvestrant) to using binimetinib plus the usual treatment in patients with hormone receptor positive breast cancer that has spread from where it first started to other places in the body (metastatic) and has an NF1 genetic change. Fulvestrant is a hormonal therapy that binds to estrogen receptors in tumor cells, resulting in estrogen receptor destruction and decreased estrogen binding, which may inhibit the growth of estrogen-sensitive tumor cells. Binimetinib is a targeted therapy that may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth. The addition of binimetinib to fulvestrant in breast cancers with an NF1 genetic change could increase the percentage of tumors that shrink as well as lengthen the time that the tumors remain stable (without progression) as compared to fulvestrant alone.
Detailed description
PRIMARY OBJECTIVES:
- To determine whether the combination of fulvestrant and binimetinib improves progression-free survival (PFS) compared to treatment with fulvestrant alone in patients not previously treated with fulvestrant. (Cohort 1) II. To determine whether overall response rate (ORR) within 4 months in patients who have previously progressed on a fulvestrant-containing regimen is greater than 10%, as a historical comparison, when these patients receive combination fulvestrant and binimetinib therapy. (Cohort 2)
SECONDARY OBJECTIVES:
- To estimate ORR at any time after the start of the treatment for Cohort 2 and separately for the two arms in Cohort 1.
II. To estimate PFS distribution in Cohort 2. III. To estimate clinical benefit rate separately for the two arms in Cohort 1 and Cohort 2.
IV. To determine the safety and toxicity profile in both cohorts. V. To estimate the overall survival (OS) in both cohorts. VI. Collect tissue and provide it to the ComboMATCH Registration Protocol to assess concordance between the diagnostic tumor mutation profile generated by the Designated Laboratories, the pre-treatment biopsy mutation profile, and the pre-treatment circulating tumor deoxyribonucleic acid (DNA) (ctDNA) mutation profile from plasma, as described in ComboMATCH Registration Protocol. For this treatment substudy, the outcome objective will be to report the proportion of cases providing sufficient tissue for that integrated scientific activity in the ComboMATCH Registration Protocol.
EXPLORATORY BIOMARKER OBJECTIVES:
- To analyze the cell-free (cf)DNA at progression to determine the changes in cfDNA profile in order to understand blood-based mutation dynamics.
II. To analyze RNAseq at progression to determine potential pathways that are altered that may contribute to the sensitivity/resistance.
III. To discover/detect novel biomarkers using microscaled proteogenomics by analyzing the proteins and phosphor-proteins along with genomics to determine potential pathways that may correlate with the response to the combination treatment.
IV. To detect the loss of NF1, using immunohistochemistry staining to precisely measure the level of the NF1 protein.
- To determine the variant allele frequency (VAF) of mutant NF1 measuring by using droplet digital polymerase chain reaction (ddPCR) for the targeted NF1 gene level.
OUTLINE: Patients who are fulvestrant naive are assigned to Cohort I, while patients who are fulvestrant resistant are assigned to Cohort II.
COHORT I: Patients are randomized to 1 of 2 arms.
ARM I: Patients receive fulvestrant intramuscularly (IM) on day 1 and day 15 of cycle 1 and day 1 of subsequent cycles and binimetinib orally (PO) twice daily (BID) on days 15 to 28 of cycle 1 and day 1 through 28 of subsequent cycles. Cycles repeat every 28 days in the absence of disease progression or unacceptable toxicity. Patients also undergo a computed tomography (CT), magnetic resonance imaging (MRI), or bone scan, echocardiography (ECHO) or multi-gated acqusition scan (MUGA), and tumor biopsy, as well as possible blood sample collection during screening and on study.
ARM II: Patients receive fulvestrant IM on day 1 and day 15 of cycle 1 and day 1 of subsequent cycles. Cycles repeat every 28 days in the absence of disease progression or unacceptable toxicity. Patients who progress on fulvestrant alone may migrate to cohort II if they meet the migration eligibility criteria. Patients not willing to migrate to cohort II will have further therapy at the investigator's discretion. Patients undergo a CT, MRI, or bone scan and tumor biopsy, as well as ECHO or MUGA and possible blood sample collection during screening and on study.
COHORT II: Patients receive fulvestrant IM on day 1 of each cycle and binimetinib PO BID on days 15-28 of cycle 1 and day 1 through 28 of subsequent cycles. Cycles repeat every 28 days in the absence of disease progression or unacceptable toxicity. Patients undergo a CT, MRI, or bone scan, ECHO or MUGA and tumor biopsy, as well as possible blood sample collection during screening and on study.
Upon completion of study treatment patients are followed up every 6 months for 5 years.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Number of arms
- 3
| Arm | Type | Receives |
|---|---|---|
| Cohort I (Arm I) (fulvestrant, binimetinib) | Experimental | Drug: Binimetinib, Procedure: Biopsy Procedure, Procedure: Biospecimen Collection, Procedure: Bone Scan, Procedure: Computed Tomography, Procedure: Echocardiography Test, Drug: Fulvestrant, Procedure: Magnetic Resonance Imaging, Procedure: Multigated Acquisition ScanPatients receive fulvestrant IM on day 1 and day 15 of cycle 1 and day 1 of subsequent cycles and binimetinib PO BID on days 15 to 28 of cycle 1 and day 1 through 28 of subsequent cycles. Cycles repeat every 28 days in the absence of disease progression or unacceptable toxicity. Patients also undergo a CT, MRI, or bone scan, ECHO or MUGA, and tumor biopsy, as well as possible blood sample collection during screening and on study. |
| Cohort I (Arm II) | Active comparator | Procedure: Biopsy Procedure, Procedure: Biospecimen Collection, Procedure: Bone Scan, Procedure: Computed Tomography, Procedure: Echocardiography Test, Drug: Fulvestrant, Procedure: Magnetic Resonance Imaging, Procedure: Multigated Acquisition ScanPatients receive fulvestrant IM on day 1 and day 15 of cycle 1 and day 1 of subsequent cycles. Cycles repeat every 28 days in the absence of disease progression or unacceptable toxicity. Patients who progress on fulvestrant alone may migrate to cohort II if they meet the migration eligibility criteria. Patients not willing to migrate to cohort II will have further therapy at the investigator's discretion. Patients undergo a CT, MRI, or bone scan and tumor biopsy, as well as ECHO or MUGA and possible blood sample collection during screening and on study. |
| Cohort II (fulvestrant, binimetinib) | Experimental | Drug: Binimetinib, Procedure: Biopsy Procedure, Procedure: Biospecimen Collection, Procedure: Bone Scan, Procedure: Computed Tomography, Procedure: Echocardiography Test, Drug: Fulvestrant, Procedure: Magnetic Resonance Imaging, Procedure: Multigated Acquisition ScanPatients receive fulvestrant IM on day 1 of each cycle and binimetinib PO BID on days 15-28 of cycle 1 and day 1 through 28 of subsequent cycles. Cycles repeat every 28 days in the absence of disease progression or unacceptable toxicity. Patients undergo a CT, MRI, or bone scan, ECHO or MUGA and tumor biopsy, as well as possible blood sample collection during screening and on study. |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (39 listed)
- Patient must have enrolled onto EAY191 and must have been given a treatment assignment to ComboMATCH to EAY191-N2 based on the presence of an actionable mutation as defined in EAY191
- The patient must be enrolled on the ComboMATCH Master Registration Trial EAY191
- Patients must have disease that can be safely biopsied and agree to a pre-treatment biopsy or, if disease cannot be safely biopsied, have archival tissue available from within 12 months prior to the date of registration on the ComboMATCH registration trial (EAY191)
- A COMBOMATCH TREATMENT TRIAL EAY191-N2 ELIGIBILITY CRITERIA:
- The patient or a legally authorized representative must provide study-specific informed consent prior to study entry and, for patients treated in the United States (U.S.), authorization permitting release of personal health information
Key exclusion criteria (20 listed)
- Concurrent anticancer therapy
- Active autoimmune disease requiring systemic treatment within the past 3 months, documented history of clinically severe autoimmune disease, or a syndrome that requires systemic steroids or immunosuppressive agents
- Active brain metastasis. Brain metastases that have been stable for at least 1 month after completion of treatment are not an exclusion criterion
- History of or evidence of retinal pathology on ophthalmologic examination that is considered a risk factor for neurosensory retinal detachment/central serous, chorioretinopathy (CSCR), retinal vein occlusion (RVO), or neovascular macular degeneration
- Patients will be excluded if they currently have the following risk factors for RVO that are documented prior to the enrollment:
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| BinimetinibAlso: ARRY 162, ARRY 438162, ARRY-162, ARRY-438162Given PO | Drug | Cohort I (Arm I) (fulvestrant, binimetinib), Cohort II (fulvestrant, binimetinib) |
| Biopsy ProcedureAlso: Biopsy, BIOPSY_TYPE, BxUndergo tumor biopsy | Procedure or surgery | Cohort I (Arm I) (fulvestrant, binimetinib), Cohort I (Arm II), Cohort II (fulvestrant, binimetinib) |
| Biospecimen CollectionAlso: Biological Sample Collection, Biospecimen Collected, Specimen CollectionUndergo blood sample collection | Procedure or surgery | Cohort I (Arm I) (fulvestrant, binimetinib), Cohort I (Arm II), Cohort II (fulvestrant, binimetinib) |
| Bone ScanAlso: Bone ScintigraphyUndergo bone scan | Procedure or surgery | Cohort I (Arm I) (fulvestrant, binimetinib), Cohort I (Arm II), Cohort II (fulvestrant, binimetinib) |
| Computed TomographyAlso: CAT, CAT Scan, Computed Axial Tomography, Computerized Axial TomographyUndergo CT scan | Procedure or surgery | Cohort I (Arm I) (fulvestrant, binimetinib), Cohort I (Arm II), Cohort II (fulvestrant, binimetinib) |
| Echocardiography TestAlso: EC, EchocardiographyUndergo ECHO | Procedure or surgery | Cohort I (Arm I) (fulvestrant, binimetinib), Cohort I (Arm II), Cohort II (fulvestrant, binimetinib) |
| FulvestrantAlso: Faslodex, Faslodex(ICI 182,780), ICI 182,780, ICI 182780Given IM | Drug | Cohort I (Arm I) (fulvestrant, binimetinib), Cohort I (Arm II), Cohort II (fulvestrant, binimetinib) |
| Magnetic Resonance ImagingAlso: Magnetic Resonance, Magnetic Resonance Imaging (MRI), Magnetic resonance imaging (procedure), Magnetic Resonance Imaging ScanUndergo MRI | Procedure or surgery | Cohort I (Arm I) (fulvestrant, binimetinib), Cohort I (Arm II), Cohort II (fulvestrant, binimetinib) |
| Multigated Acquisition ScanAlso: Blood Pool Scan, Equilibrium Radionuclide Angiography, Gated Blood Pool Imaging, Gated Heart Pool ScanUndergo MUGA | Procedure or surgery | Cohort I (Arm I) (fulvestrant, binimetinib), Cohort I (Arm II), Cohort II (fulvestrant, binimetinib) |
Primary outcome
Progression Free Survival (PFS) (Cohort I)
Time frame: The duration between randomization and progression or death from all cause, whichever happens first, assessed up to 5 years
PFS of the two study arms will be compared by log-rank test (1-sided, alpha=0.1). Kaplan-Meier plot will be provided. Hazard ratio (HR) and the corresponding 95% confidence interval (CI) will be estimated by Cox proportional model using treatment as covariate.
Objective Response Rate (ORR) (Cohort II)
Time frame: Within 4 months of the start of treatment
ORR is the percentage of patients who reaches a complete or partial response (defined by Response Evaluation Criteria in Solid Tumors [RECIST] version[v]1.1) within 4 months of the start of the treatment. ORR will be calculated as the proportion of patients achieved partial response (PR) or complete response (CR) within 4 months after the initiation of the treatment. ORR will be reported with corresponding 95% exact CI. Patients who have withdrawn from the study before any efficacy follow up are considered non-evaluable for clinical response and will be replaced.
6 secondary outcomes
ORR for Each Study Arm (Cohort I)
Time frame: Any time after the start of the treatment, assessed up to 5 years
ORR (Cohort II)
Time frame: Any time after the start of the treatment, assessed up to 5 years
Clinical Benefit Rate
Time frame: Any time after the start of the treatment, assessed up to 5 years
PFS (Cohort II)
Time frame: The duration between randomization and progression or death from all cause, whichever happens first, assessed up to 5 years
Overall Survival (OS)
Time frame: The duration between randomization and death of all causes, assessed up to 5 years
Incidence of Adverse Events
Time frame: Up to 5 years
Results and safety
Loading the posted results from ClinicalTrials.gov…
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 3 Mar 2026.
- Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
- Individual participant dataSharing planned: Yes. 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.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Bora Lim principal investigator
CenterThe University of Texas MD Anderson Cancer Center
196 sites in 2 countries: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 2 study testing Binimetinib, Biopsy Procedure and Biospecimen Collection in people with Anatomic Stage IV Breast Cancer AJCC v8 and Metastatic HER2-Negative Breast Carcinoma, run by National Cancer Institute (NCI) at 196 sites in 2 countries.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 39 inclusion and 20 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: stopped early, as of the sponsor's last update on 3 Mar 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 196 sites in United States, Puerto Rico. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this phase mean?
Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
Yes. Results are posted in the registry (first posted 3 Mar 2026). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Progression Free Survival (PFS) (Cohort I) (time frame: The duration between randomization and progression or death from all cause, whichever happens first, assessed up to 5 years). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 3 Mar 2026.