Testing Treatment With Encorafenib and Binimetinib Before Surgery for Melanoma With Lymph Node Involvement

A Phase II Neoadjuvant Study of Encorafenib With Binimetinib in Patients With Resectable Locoregional Metastases From Cutaneous or Unknown Primary Melanoma (Stages III N1B/C/D)

This phase II trial studies how well encorafenib and binimetinib work before surgery in treating patients with BRAF V600-mutated stage IIIB-D melanoma that has spread to the lymph nodes. Encorafenib and binimetinib may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth. This trial also studies how well 18F-FLT positron emission tomography (PET)/computed tomography (CT) works in predicting the response of melanoma to encorafenib and binimetinib. 18F-FLT is an imaging agent, sometimes called a tracer. PET and CT are types of imaging scans. Using 18F-FLT PET/CT together with encorafenib and binimetinib may provide more information on melanoma over time.

Study Overview

• Status: Terminated
• Conditions: Melanoma of Unknown Primary; Pathologic Stage IIIB Cutaneous Melanoma AJCC v8; Pathologic Stage IIIC Cutaneous Melanoma AJCC v8; Pathologic Stage IIID Cutaneous Melanoma AJCC v8; Recurrent Cutaneous Melanoma; Metastatic Malignant Neoplasm in Lymph Node
• Intervention / Treatment: Drug: Binimetinib; Procedure: Conventional Surgery; Drug: Encorafenib; Other: Fluorothymidine F-18

Detailed Description

PRIMARY CLINICAL OBJECTIVE:

I. To evaluate the pathologic complete response (pCR) rate of neoadjuvant treatment with encorafenib and binimetinib.

SECONDARY CLINICAL OBJECTIVES:

I. To determine response rate (RR) (Response Evaluation Criteria in Solid Tumors [RECIST]), disease-free survival (DFS) and overall survival (OS).

II. To describe correlation of pCR with RR, DFS and OS. III. To assess safety and toxicity.

CORRELATIVE SCIENCE OBJECTIVES:

I. To evaluate CD8 positive (+) T cell infiltration and Ki-67 status in tumor or tumor bed pre, during, and post neoadjuvant treatment and the change in CD8+ tumor infiltrating lymphocyte (TIL) with neoadjuvant treatment and correlate with clinical response.

II. To compare local review for pathologic response with central pathology review.

III. To assess the correlation between change in fluorothymidine F-18 (18F-FLT) PET/CT uptake and change in Ki-67.

IMAGING OBJECTIVES:

I. To compare the change in 18F-FLT PET/CT uptake (from baseline to post-neoadjuvant therapy) among patients with and without pathologic complete response.

II. To compare post-neoadjuvant 18F-FLT PET/CT uptake among patients with and without pathologic complete response.

III. To estimate an optimal threshold for prediction of pathologic complete response using i) change in 18F-FLT PET/CT uptake, and ii) post-neoadjuvant 18F-FLT PET/CT uptake.

IV. To assess the correlation between change in 18F-FLT PET/CT uptake and change in Ki-67.

OUTLINE:

NEOADJUVANT TREATMENT: Patients receive 18F-FLT intravenously (IV) and undergo a PET/CT scan approximately 60 minutes later. Within 2 weeks, patients receive encorafenib orally (PO) once daily (QD) and binimetinib PO twice daily (BID) on days 1-28. Treatment repeats every 28 days for up to 2 cycles in the absence of disease progression or unacceptable toxicity. Patients then receive 18F-FLT IV and undergo a second PET/CT scan approximately 60 minutes later.

SURGICAL RESECTION: Within 2 weeks of completing therapy with encorafenib and binimetinib, patients undergo surgery.

ADJUVANT TREATMENT: Within 2-7 days after surgery, patients resume treatment with encorafenib PO QD and binimetinib PO BID on days 1-28. Treatment repeats every 28 days for up to 11 cycles in the absence of disease progression or unacceptable toxicity.

After completion of study treatment, patients are followed up every 3 months for 1 year, then every 6 months for 3 years.

• Study Type: Interventional
• Enrollment (Actual): 3
• Phase: Phase 2

Contacts and Locations

Study Locations

• United States
  • California
    • Los Angeles, California, United States, 90033
      • USC / Norris Comprehensive Cancer Center
    • Los Angeles, California, United States, 90033
      • Los Angeles County-USC Medical Center
  • Michigan
    • Ann Arbor, Michigan, United States, 48109
      • University of Michigan Comprehensive 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
    • 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
  • Pennsylvania
    • Philadelphia, Pennsylvania, United States, 19111
      • Fox Chase Cancer Center
  • Wisconsin
    • Madison, Wisconsin, United States, 53792
      • University of Wisconsin Carbone Cancer Center

Participation Criteria

Eligibility Criteria

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

Description

Inclusion Criteria:

• Patient must have histologically proven melanoma that is clinically evident (macroscopic lymphadenectomy [LAD]) stage III B/C/D, (American Joint Committee on Cancer [AJCC] 8th edition) of cutaneous origin or unknown primary. Patients must have at least one clinically evident lymph node metastasis (N1c patients are not eligible).

  • This may be an initial presentation with primary tumor and nodal metastases or locoregional nodal relapse with history of resected primary melanoma

  • Stage IIIB

    • T0-3a N1b M0
    • T1a-3a N2b M0

  • Stage IIIC

    • T0 or T3b-4b N2b M0
    • T3b-4b N1b M0
    • Any T N2c M0 (at least 1 clinically evident node)
    • T0-4a N3b M0

  • Stage IIID

    • T4b N3b/c M0 (if 3c: at least 1 clinically evident node)

• Patient must have measurable disease on baseline imaging scans, obtained within 4 weeks prior to registration as defined by RECIST and by the following criteria

  • The melanoma target tumor must be completely resectable as determined by a surgical oncologist or experienced melanoma surgeon

    • Extensive satellitosis or in transit metastases are not considered completely resectable
• Patient must have BRAF V600 mutation positive based on report from Clinical Laboratory Improvement Act (CLIA) certified laboratory
• Patient must be medically fit to undergo surgery
• Absolute neutrophil count (ANC) >= 1.5 x 10^9/L (obtained < 14 days prior to registration)
• Hemoglobin >= 8 g/dL without transfusion (obtained < 14 days prior to registration)
• Platelets >= 100 x 10^9/L without transfusion (obtained < 14 days prior to registration)
• Aspartate aminotransferase (AST) and alanine aminotransferase (ALT) =< 2.0 x upper limit of normal (ULN) (obtained < 14 days prior to registration)
• Total bilirubin =< 1.5 x ULN and < 2 mg/dL; OR total bilirubin > 1.5 x ULN with indirect bilirubin < 1.5 x ULN (obtained < 14 days prior to registration)
• Serum creatinine =< 1.5 x ULN, or calculated creatinine clearance > 50 mL/min by Cockcroft-Gault formula (obtained < 14 days prior to registration)
• Prothrombin time (PT), international normalized ratio (INR), and partial thromboplastin time (PTT) =< 1.5 x ULN (obtained < 14 days prior to registration)
• Patient must have an Eastern Cooperative Oncology Group (ECOG) performance status 0-1
• Patient must be able to take oral medications
• Patient must be able to lie still during the 18F-FLT PET/CT scan for the duration of the imaging study (up to 1.5 hours), have no previous indication of allergic reaction to the radiotracer, and meet the size limits of the qualified PET/CT scanner
• Patient must be participating in this study at an institution which has completed the ECOG-American College of Radiology Imaging Network (ACRIN) defined PET/CT scanner qualification procedures and received ECOG-ACRIN PET scanner approval
• Patients known to be human immunodeficiency virus (HIV) positive are eligible if they have undetectable HIV viral load and stable and adequate CD4 counts (>= 500 mm^3) on screening labs provided they meet all other protocol criteria for participation and that there is no high risk drug interactions
• Women of childbearing potential and sexually active males must use accepted and effective method(s) of contraception or to abstain from sexual intercourse for the duration of their participation in the study and for at least 30 days after the last dose of protocol treatment for female patients, and for at least 90 days after the last dose of protocol treatment for male patients. In addition, female patients must not donate ova from the time of registration until 30 days after the last dose of study treatment. Male patients must not donate sperm from the time of registration until 90 days after the last dose of protocol treatment
• Patient may be on anticoagulation at prophylactic or therapeutic levels. Patients must not be using anticoagulants at therapeutic levels that may interfere with encorafenib and binimetinib

Exclusion Criteria:

• Stage IV melanoma
• Patient must not have any prior treatment with BRAF inhibitor (BRAFi) or MEK inhibitor (MEKi)
• Patient must not have any evidence of distant metastases
• Patient must not have any prior adjuvant therapy at this disease presentation; prior immune therapy (such as adjuvant interferon or checkpoint inhibitors) is permitted if >= 6 months from last treatment
• Patient must not have any prior radiation to the site of evaluable disease
• Patient must not have active infection requiring treatment with parenteral antibiotics
• Patient must not have active hepatitis B, and/or active hepatitis C infection given concerns for drug interactions or increased toxicities. Testing is not required
• Patient must not have other significant medical, surgical, or psychiatric conditions that in the opinion of the investigator may interfere with compliance, make the administration of study medications hazardous

• Patient must not have had previous or concurrent other malignancy with the following exceptions:

  • Adequately treated basal cell or squamous cell carcinoma of the skin, in situ carcinoma of the cervix
  • Other solid tumor: if treated and without evidence of recurrence for at least 2 years prior to study entry
• Women must not be pregnant or breast-feeding due to potential harm to an unborn fetus and possible risk for adverse events in nursing infants with the systemic antineoplastic medications, as well as surgery and radiation being used. Patients must also not expect to conceive or father children from the time of registration, while on study, treatment, and until at least 30 days after the last dose of study treatment (for female patients) and 90 days after the last dose of study treatment (for male patients). All females of childbearing potential must have a blood test or urine study within 14 days prior to registration to rule out pregnancy. A female of childbearing potential is any woman, regardless of sexual orientation or whether they have undergone tubal ligation, who meets the following criteria: 1) has achieved menarche at some point, 2) has not undergone a hysterectomy or bilateral oophorectomy; or 3) has not been naturally postmenopausal (amenorrhea following cancer therapy does not rule out childbearing potential) for at least 24 consecutive months (i.e., has had menses at any time in the preceding 24 consecutive months)
• Patient must not have known hypersensitivity or contraindication to any component of binimetinib or encorafenib or their excipients

• Patient must not have impaired cardiovascular function or clinically significant cardiovascular disease including, but not limited to, any of the following:

  • History of acute coronary syndromes (including myocardial infarction, unstable angina, coronary artery bypass grafting, coronary angioplasty or stenting) < 6 months prior to registration
  • Congestive heart failure requiring treatment (New York Heart Association grade >= 2)
  • Left ventricular ejection fraction (LVEF) < 50% as determined by multigated acquisition scan (MUGA) or echocardiogram (ECHO)
  • Uncontrolled hypertension defined as persistent systolic blood pressure >= 150 mmHg or diastolic blood pressure >= 100 mmHg despite current therapy
  • History or presence of clinically significant cardiac arrhythmias (including resting bradycardia, uncontrolled atrial fibrillation or uncontrolled paroxysmal supraventricular tachycardia)
  • Baseline corrected QT (QTc) interval >= 480 ms
• Patient must not have impairment of gastrointestinal function or disease which may significantly alter the absorption of study drug (e.g., active ulcerative disease, uncontrolled vomiting or diarrhea, malabsorption syndrome, small bowel resection with decreased intestinal absorption), or recent (=< 3 months) history of a partial or complete bowel obstruction, or other conditions that will interfere significantly with the absorption of oral drugs
• Patient must not have any known history of acute or chronic pancreatitis
• Patient must not have any concurrent neuromuscular disorder that is associated with elevated creatine kinase (CK) (e.g., inflammatory myopathies, muscular dystrophy, amyotrophic lateral sclerosis, spinal muscular atrophy
• Patient must not have any known history or current evidence of retinal vein occlusion (RVO) or current risk factors for RVO (e.g., uncontrolled glaucoma or ocular hypertension, history of hyperviscosity, factor V Leiden or activated protein C resistance); history of retinal degenerative disease
• Patient must not use any medication (including herbal medications, supplements, or foods), or use of a prohibited medication =< 1 week prior to registration

• Patient must not have a history of thromboembolic or cerebrovascular events =< 12 weeks prior to registration. Examples include transient ischemic attacks, cerebrovascular accidents, hemodynamically significant (i.e. massive or sub-massive) deep vein thrombosis or pulmonary emboli

  • NOTE: Patients with thromboembolic events related to indwelling catheters or other procedures may be registered
  • NOTE: Patients with either deep vein thrombosis or pulmonary emboli that does not result in hemodynamic instability are allowed to register as long as they are on a stable dose of anticoagulants for at least 4 weeks

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: N/A
• Interventional Model: Single Group Assignment
• Masking: None (Open Label)

Number of Arms

1

Arms and Interventions

Participant Group / Arm

Intervention / Treatment

Experimental: Neoadjuvant encorafenib + binimetinib, surgery, adjuvant encorafenib + binimetinib; NEOADJUVANT TREATMENT: Patients receive 18F-FLT IV and undergo a PET/CT scan approximately 60 minutes later. Within 2 weeks, patients receive encorafenib PO QD and binimetinib PO BID on days 1-28. Treatment repeats every 28 days for up to 2 cycles in the absence of disease progression or unacceptable toxicity. Patients then receive 18F-FLT IV and undergo a second PET/CT scan approximately 60 minutes later. SURGICAL RESECTION: Within 2 weeks of completing therapy with encorafenib and binimetinib, patients undergo surgery. ADJUVANT TREATMENT: Within 2-7 days after surgery, patients resume treatment with encorafenib PO QD and binimetinib PO BID on days 1-28. Treatment repeats every 28 days for up to 11 cycles in the absence of disease progression or unacceptable toxicity.

Drug: Binimetinib; Given PO; Other Names: ARRY-438162; MEK162; Mektovi; NSC 788187; Procedure: Conventional Surgery; Undergo surgery; Drug: Encorafenib; Given PO; Other Names: LGX818; ONO-7702; Other: Fluorothymidine F-18; Given IV; Other Names: 18F-FLT; FLT; 3'-deoxy-3'- 18F fluorothymidine

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Pathologic Complete Response	Pathologic complete response (pCR) is defined as complete absence of viable tumor in the treated tumor bed. Partial pathologic response (pPR) is defined as less than or equal to 50% of the treated tumor bed is occupied by viable tumor cells. Pathologic non-response is defined as great than 50% of the treated tumor bed is occupied by viable tumor cells.	Assessed at 10-12 weeks

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Objective Response	Objective response is defined as either complete response (CR) or partial response (PR) per Response Evaluation Criteria in Solid Tumors (RECIST) guideline (version 1.1). Complete response is defined as disappearance of all lesions. Partial response is defined as at least a 30% decrease in the sum of the diameters of target lesions, taking as reference the baseline sum diameters and/or persistence of one or more non-target lesion(s). Stable disease is defined as neither sufficient shrinkage to qualify for PR nor sufficient increase to qualify for progressive disease (PD), taking as reference the smallest sum diameters while on study. PD is defined as at least a 20% increase in the sum of the diameters of target lesions, taking as reference the smallest sum on study or appearance of one or more new lesions and/or unequivocal progression of existing non-target lesions.	Assessed at baseline, 8 weeks, then every 12 weeks up to 1.4 years
Disease-free Survival	Disease-free survival is defined as the time from date of surgical resection to the date of recurrence or death, whichever occurs first. Recurrence must be documented by radiologic exams and with biopsy in all cases except for brain metastases (biopsy not required). Abnormal blood studies alone (e.g., elevated transaminases or alkaline phosphatase) are not sufficient evidence of relapse. Whenever possible, histologic proof of recurrence should be obtained unless the lesion is not accessible or a biopsy would cause undue risk to the patient.	Assessed at baseline, 8 weeks, then every 12 weeks up to 19.4 months
Overall Survival	Overall survival is defined as the time from registration to death or date last known alive, which is the censoring date for patients who are still alive.	Assessed at every 3 months for 2 years and then every 6 months, up to 2 years 9 months
Associations Between pCR and Best Response	Association between pCR and best response will be reported.	Assessed at baseline, 8 weeks, then every 12 weeks up to 1.4 years

Other Outcome Measures

Outcome Measure	Measure Description	Time Frame
CD8+ T Cell Infiltration and Ki-67 Status	Evaluation of CD8+ T cell infiltration and Ki-67 status in tumor or tumor bed pre, during, and post neoadjuvant treatment will be performed. The change in CD8+ TIL with neoadjuvant treatment will also be evaluated.	Assessed at baseline, during neoadjuvant treatment and at surgery
Concordance Between Local Review for Pathologic Response and Central Pathology Review	The concordance between local review for pathologic response and central pathology review will be performed.	Assessed at surgery
Change in 18F-FLT PET/CT Uptake	Comparison of the change in 18F-FLT PET/CT uptake from baseline to post-neoadjuvant therapy between patients with and without pathologic complete response will be performed.	Assessed at baseline and post-neoadjuvant therapy
18F-FLT PET/CT Uptake	The uptake value of 18F-FLT PET/CT will be evaluated after neoadjuvant treatment is completed. This value will be compared between patients with and without pathologic complete response.	Assessed after neoadjuvant treatment, about 16 weeks
Association Between Pathologic Complete Response and Change in 18F-FLT PET/CT Uptake as Well as Post-neoadjuvant 18F-FLT PET/CT Uptake	The association between pathologic complete response and change in 18F-FLT PET/CT uptake as well as post-neoadjuvant 18F-FLT PET/CT uptake will be evaluated. An optimal threshold of 18F-FLT PET/CT uptake for prediction of pathologic complete response will be estimated.	Assessed at baseline and post-neoadjuvant treatment
Correlation Between Change in 18F-FLT PET/CT Uptake and Change in Ki-67	The correlation between change in 18F-FLT PET/CT uptake and change in Ki-67 will be evaluated.	Assessed at baseline and post-neoadjuvant treatment

Collaborators and Investigators

• Sponsor: ECOG-ACRIN Cancer Research Group
• Collaborators: National Cancer Institute (NCI)
• Investigators: Principal Investigator: Leslie A Fecher, ECOG-ACRIN Cancer Research Group

Study record dates

Study Major Dates

• Study Start (Actual): September 22, 2021
• Primary Completion (Actual): June 10, 2024
• Study Completion (Actual): January 31, 2025

Study Registration Dates

• First Submitted: January 6, 2020
• First Submitted That Met QC Criteria: January 6, 2020
• First Posted (Actual): January 9, 2020

Study Record Updates

• Last Update Posted (Actual): May 29, 2026
• Last Update Submitted That Met QC Criteria: May 12, 2026
• Last Verified: May 1, 2026

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Pathologic Processes; Neoplasms by Site; Neoplasms; Neoplasms by Histologic Type; Neoplastic Processes; Skin Diseases; Neuroectodermal Tumors; Neoplasms, Germ Cell and Embryonal; Neoplasms, Nerve Tissue; Neuroendocrine Tumors; Nevi and Melanomas; Skin Neoplasms; Neoplasm Metastasis; Pathological Conditions, Signs and Symptoms; Skin and Connective Tissue Diseases; Melanoma; Lymphatic Metastasis; Anti-Infective Agents; Antiviral Agents; encorafenib; binimetinib; alovudine
• Other Study ID Numbers: EA6183 (Other Identifier: CTEP); U10CA180820 (U.S. NIH Grant/Contract); NCI-2019-07407 (Registry Identifier: CTRP (Clinical Trial Reporting Program))

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: YES
• IPD Plan Description: Individual participant data may be made available upon request as per the ECOG-ACRIN Data Sharing Policy.

Drug and device information, study documents

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