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Clinical Trial Details — Status: Terminated

Administrative data

NCT number NCT01495988
Other study ID # ML27894
Secondary ID GEN-01
Status Terminated
Phase Phase 2
First received December 9, 2011
Last updated September 22, 2017
Start date August 2013
Est. completion date June 2016

Study information

Verified date September 2017
Source Melanoma Research Foundation Breakthrough Consortium
Contact n/a
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

This phase 2 clinical trial randomizes patients with BRAF mutant melanoma to either (1) standard of care (SOC) - BRAF inhibitor vemurafenib in combination with MEK inhibitor cobimetinib; or, (2) SOC plus bevacizumab, an anti-VEGF antibody that suppresses new blood vessel formation and can stimulate the immune system. Previous clinical studies in melanoma have shown that bevacizumab may improve clinical benefit (progression free survival) if combined with ipilimumab or abraxane. Preclinical studies suggest that VEGF increase plays a role in resistance to BRAF inhibitors. This randomized study will ask whether the addition of bevacizumab to targeted therapy SOC in BRAF mutant melanoma can improve response rates and clinical benefit. Patients may have received no therapy for advanced disease or up to 2 prior therapies, excluding BRAF and MEK inhibitors.


Description:

In this study, the drugs being used are vemurafenib, cobimetinib, and bevacizumab. Vemurafenib has been approved by the FDA for treatment of patients with advanced melanoma that harbors a BRAF mutation. However, vemurafenib in combination with cobimetinib has not been approved by the FDA for the treatment of cancer. Bevacizumab has been approved by the FDA for use in combination with first line chemotherapies for treatment of patients with colorectal, breast and lung cancer. Bevacizumab has not been approved for use in patients with metastatic melanoma.

Vemurafenib and cobimetinib attack different proteins that cause cancer cells to grow. Vemurafenib works by blocking a protein called B-RAF. Researchers have found that a large number of melanomas have mutations (changes) in the BRAF gene. The BRAF gene codes for a protein called B-RAF, which is involved in sending signals in cells that can lead to cell growth. Research has determined that mutations in the BRAF gene at the V600 position cause a change in the B-RAF protein that can drive the growth and spread of melanoma cells. Vemurafenib works by preventing these altered B-RAF proteins from working, and thereby may block the growth and spread of cancer cells in patients with melanoma. Cobimetinib works by blocking a protein called MEK. MEK has been known to promote growth in cancer that carries either a mutation in the BRAF or KRAS genes. The vemurafenib/cobimetinib combination has been used in prior clinical studies. Information from those other research studies suggests that these drugs can shrink melanoma tumors in the majority of patients and slow tumor growth as compared to standard chemotherapy. Another drug to block the BRAF and MEK proteins was recently approved by the FDA in the treatment of patients with B-RAFV600 mutant melanoma. The researchers want to see if using vemurafenib and cobimetinib together will work in a similar way to treat malignant melanoma.

Bevacizumab is a humanized monoclonal antibody (a type of protein that is normally made by the immune system to help defend the body from infection and cancer) produced by using recombinant DNA technology. Bevacizumab is an antibody directed against vascular endothelial growth factor or VEGF. VEGF is a potent, specific growth factor with a well-defined role in normal and abnormal blood vessel formation. It is present in a wide variety of normal tissues, but is produced in excess by most solid cancers (tumors). In the setting of cancer, VEGF promotes the growth of blood vessels that bring nutrients to tumor cells. Its expression by the tumor has been associated with worse outcome in patients with a number of tumors types including melanoma. In laboratory experiments, bevacizumab inhibits the growth of several different types of human cancer cells by blocking the effects of VEGF.

The purpose of this research study is to determine the effectiveness of using the study drugs vemurafenib, cobimetinib, and bevacizumab together relative to vemurafenib and cobimetinib alone. This study will investigate whether using both study drugs lengthens the amount of time before participants' melanoma worsens, increases the number of people whose melanoma responds to treatment and what the side effects are of using the drugs together rather than separately.


Recruitment information / eligibility

Status Terminated
Enrollment 10
Est. completion date June 2016
Est. primary completion date January 2016
Accepts healthy volunteers No
Gender All
Age group 18 Years and older
Eligibility Inclusion Criteria:

1. Patients must have histological or cytological confirmed melanoma that is metastatic or unresectable stage IIIc and clearly progressive.

2. Patients must have melanoma that is documented to contain a BRAFV600E or BRAFV600K mutation by a FDA-approved test.

3. Age >= 18 years.

4. Women must not be pregnant due to the fact that the effects of vemurafenib, cobimetinib, and/or bevacizumab on the developing human fetus are unknown. For this reason and because antiangiogenic agents as well as other therapeutic agents used in this trial are known to be teratogenic, women of child-bearing potential and men must agree to use adequate contraception (hormonal or barrier method of birth control; abstinence; defined in Appendix G) prior to study entry and for the duration of study participation. Should a woman become pregnant while participating in this study, she should inform her treating physician immediately.

5. All females of childbearing potential must have a blood test or urine study within 2 weeks 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 not undergone a hysterectomy or bilateral oophorectomy; or 2) has not been naturally postmenopausal for at least 24 consecutive months (i.e., has had menses at any time in the preceding 24 consecutive months).

6. Because there is an unknown but potential risk for adverse events in nursing infants secondary to treatment of the mother with bevacizumab, cobimetinib, and vemurafenib, female participants who are breastfeeding must agree to discontinue nursing prior to Day 1 of the study.

7. Patients must have measurable disease as defined in Section 10.1 (cutaneous lesions measuring at least 1 cm will be considered measurable). Baseline CT or MRI scans of measurable disease sites must be performed within 4 weeks of study entry.

8. Patients must have discontinued immunotherapy or other systemic therapy including investigational agents at least 4 weeks prior to entering the study and have recovered from adverse events due to those agents. Patients must agree to not receive any other investigational agents during study participation.

9. Patients must have an ECOG performance status of 0, 1, or 2.

10. Patients must have the following baseline laboratory values:

1. White Blood Count > 3,000/mm3

2. Absolute Neutrophil Count > 1,500/mm3

3. Platelet Count > 100,000/mm3

4. Serum creatinine < 1.5 x upper limit of normal (ULN) or serum creatinine clearance (CrCl)> 40ml/min (CrCl= Wt (kg) x (140-age)*/72 x Cr. level, *female x 0.85)

5. Aspartate aminotransferase (AST) / alanine aminotransferase (ALT) < 3 x ULN (< 5 x ULN for patients with documented liver metastases)

6. Alkaline Phosphatase =< 2 x ULN (=< 5 x ULN for patients with known liver involvement and =< 7 x ULN for patients with known bone involvement)

7. International Normalized Ratio (INR) < 1.5 and aPTT within 1.1 x ULN

8. Total Bilirubin < 1.5 x ULN

9. UPC ratio < 1.0 at screening or 24 hours urine protein < 1 gm (Appendix D)

11. Patients must have the ability to understand and the willingness to sign a written informed consent document.

Exclusion Criteria:

1. Patients may not have received more than 2 prior systemic treatment regimens for distant metastatic disease. The following prior therapy is permitted in either the adjuvant or metastatic disease setting, provided treatment is discontinued at least 4 weeks prior to initiating study treatment:

1. Immunotherapy, such as interferon, interleukin-2, GM-CSF, ipilimumab, anti-PD1 or other experimental agent.

2. Cytotoxic chemotherapy, such as dacarbazine, temozolomide, carboplatin +/-paclitaxel.

2. Patients may not have had radiation therapy within the last 4 weeks prior to initiation of study treatment.

3. Patients who have had prior VEGF pathway inhibitor, BRAF or MEK inhibitor therapy are ineligible.

4. Patients must have no clinical evidence of active brain metastasis. Patients with a history of brain metastases must meet all of the following criteria:

1. Have completed treatment greater than 4 weeks prior to enrollment.

2. Have CNS lesions that are confirmed to be stable or regressing on imaging since the time of the last CNS treatment including the pre-treatment CT or MRI scan for this trial.

3. Patients must have no residual neurologic symptoms while taking no steroids, a stable or decreasing dose of steroids, or a stable dose of anti-seizure medication for the 2 weeks prior to enrollment.

5. Patients must not have other concurrent uncontrolled malignancies, defined as a malignancy that currently requires therapy or other intervention. Patients with suspected cuSCCs should have them excised prior to study registration. Surgical resection should not be performed within 7 days of starting protocol therapy.

6. Patients may not have had a major surgical procedure, open biopsy (excluding skin cancer resection, cutaneous/subcutaneous melanoma metastasis resection or biopsy or vascular access device insertion), or significant traumatic injury within 28 days prior to Day 1, or have an anticipated need for major surgical procedure or a planned elective surgical procedure during the course of the study.

7. Patients may not have had a core biopsy, skin cancer resection, or other minor surgical procedure, including placement of a vascular access device, within 7 days prior to Day 1 of the protocol.

8. Patients must not have a serious intercurrent illness including, but not limited to:

1. Ongoing or active infection requiring parental antibiotics on Day 1

2. A history of malabsorption or other condition that would interfere with absorption of vemurafenib or cobimetinib.

3. History of hemoptysis (>= 1/2 teaspoon of bright red blood per episode) within 1 month prior to Day 1

4. History of congenital long QT syndrome or mean corrected QTc interval > 450 msec at baseline

5. Clinically significant cardiovascular disease, defined as any of the following conditions:

i. Uncontrolled hypertension (defined as systolic blood pressure > 150 mmHg and/or diastolic blood pressure > 100 mmHg) ii. Prior history of hypertensive crisis or hypertensive encephalopathy iii. Myocardial infarction within 6 months iv. Unstable angina v. New York heart association grade II or greater congestive heart failure (Appendix C) vi. Serious cardiac arrhythmia requiring medication vii. LVEF < 50% or below institutional limit of normal f) History of stroke of TIAs within 6 months prior to Day 1 g) Grade II or greater peripheral vascular disease within 1 year prior to study entry or other significant vascular disease (e.g., aortic aneurysm, requiring surgical repair or recent peripheral arterial thrombosis) within 6 months prior to Day 1 h) Serious, non-healing wound, active ulcer, or untreated bone fracture i) History of abdominal fistula or gastrointestinal perforation within 6 months prior to Day 1 j) Known hypersensitivity to any component of bevacizumab k) Known CNS disease, except for stable or regressing brain metastases. l) Evidence of bleeding diathesis or significant coagulopathy (in the absence of therapeutic anticoagulation) m) Psychiatric illness/social situations that would limit compliance with study requirements.

n) Significant ocular issues including history of or evidence of retinal pathology on ophthalmologic examination that is considered a risk factor for neurosensory retinal detachment, retinal vein occlusion (RVO), or neovascular macular degeneration. The risk factors for RVO are listed below. Patients should be excluded if they have the following conditions:

1. Uncontrolled glaucoma with intra-ocular pressures >21mm Hg

2. Serum cholesterol >= Grade 2

3. Hypertriglyceridemia >= Grade 2

4. Hyperglycemia (fasting) >= Grade 2

9. Patients must not have the following foods/ supplements at least 7 days prior to initiation of and during study treatment:

1. St. John's wort or hyperforin (potent cytochrome P450 CYP3A4 enzyme inducer)

2. Grapefruit juice (potent cytochrome P450 CYP3A4 enzyme inhibitor).

10. Because patients with immune deficiency are at increased risk of lethal infections when treated with bone marrow-suppressive therapy, HIV-positive patients receiving combination anti-retroviral therapy are excluded from the study because of possible pharmacokinetic interactions with bevacizumab, vemurafenib and cobimetinib.

Study Design


Related Conditions & MeSH terms


Intervention

Drug:
Vemurafenib
Vemurafenib will be given at a dose of 960 mg, orally, 2X a day to all patients until disease progression, intolerable toxicity, patient request for discontinuation, or study termination by the sponsor.
Bevacizumab
Patients assigned to the combination arm will also receive bevacizumab at 15mg/kg, intravenously, every 3 weeks.
Cobimetinib
Cobimetinib will be given at a dose of 60mg, orally, 1X a day to all patients for 21 days, then 7 days off, in a 28 day treatment cycle.

Locations

Country Name City State
United States University of Colorado Cancer Center Aurora Colorado
United States Harry and Jeannette Weinberg Cancer Institute at Franklin Square Baltimore Maryland
United States Beth Israel Deaconess Medical Center (BIDMC) Boston Massachusetts
United States Dana-Farber Cancer Institute Boston Massachusetts
United States Massachusetts General Hospital Boston Massachusetts
United States OSU Comprehensive Cancer Center Columbus Ohio
United States The Angeles Clinic Los Angeles California
United States Vanderbilt-Ingram Cancer Center Nashville Tennessee
United States Columbia University Medical Center New York New York
United States NYU Clinical Cancer Center New York New York
United States University of Pittsburgh Medical Center Pittsburgh Pennsylvania
United States University of Washington Medical Center Seattle Washington
United States Georgetown Lombardi Comprehensive Cancer Center Washington, D.C. District of Columbia
United States Washington Cancer Institute at MedStar Washington Hospital Center Washington, D.C. District of Columbia

Sponsors (2)

Lead Sponsor Collaborator
Melanoma Research Foundation Breakthrough Consortium Genentech, Inc.

Country where clinical trial is conducted

United States, 

Outcome

Type Measure Description Time frame Safety issue
Primary Maximum Tolerated Dose To establish the maximum tolerated dose (MTD) of bevacizumab in combination with vemurafenib and cobimetinib. Until MTD determined (up to 6 months)
Primary Median Progression-free Survival To compare median progression-free survival (PFS) of patients with stage IV, BRAFV600E or BRAFV600K melanoma treated with vemurafenib/cobimetinib versus vemurafenib/cobimetinib and bevacizumab. Time between randomization and disease progression (~10-15 months)
Secondary Overall Survival Compare overall survival (OS) of patients with stage IV, BRAFV600E/K melanoma treated with vemurafenib/cobimetinib versus vemurafenib/cobimetinib and bevacizumab. Time between randomization and death due to any cause (overall survival rates also to be assessed at 12 and 18 months)
Secondary Response Rates Compare response rate (RR) of patients with stage IV, BRAFV600E/K melanoma treated with vemurafenib/cobimetinib versus vemurafenib/cobimetinib and bevacizumab. From time of randomization to time of disease progression (restaging for tumor response to occur every 8 wks until wk 48, then every 12 wks thereafter)
Secondary Toxicity and Safety Profile Describe the toxicity and safety profile of treatment with vemurafenib/cobimetinib versus vemurafenib/cobimetinib and bevacizumab in patients with stage IV, BRAFV600E/K melanoma. Until study completion
Secondary Effects of the Addition of Bevacizumab on Tumor Angiogenesis, Resistance Mechanisms and Immune Function Perform a variety of correlative studies aimed at understanding the effects of vemurafenib/cobimetinib, and bevacizumab administration relative to vemurafenib/cobimetinib on tumor angiogenesis, resistance mechanisms and immune function. Upon completion of the protocol (3 years)
Secondary Correlate Blood Markers of B-RAFV600 Mutation With Treatment Efficacy Assess the effectiveness of blood reverse transcription polymerase chain reaction (RT-PCR) assay for BRAFV600 as a surrogate biomarker for tumor response and resistance in patients receiving vemurafenib/cobimetinib +/- bevacizumab. Upon completion of the protocol (3 years)
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