Randomized Phase II Trial of Intermittent Versus Continuous Dosing of Dabrafenib (NSC-763760) and Trametinib (NSC-763093) in BRAFV600E/K Mutant Melanoma

This randomized phase II trial studies how well dabrafenib and trametinib work in treating patients with stage III-IV melanoma that cannot be removed by surgery and contains a B-Raf proto-oncogene, serine/threonine kinase (BRAF) mutation. Dabrafenib and trametinib may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth.
Key Eligibility:
•Patients must have histologically or cytologically confirmed stage IV or unresectable stage III BRAF V600E or BRAF V600K mutant melanoma
•Patients must have BRAF V600E or BRAF V600K mutation identified by a Clinical Laboratory Improvement Amendments (CLIA)-certified laboratory; acceptable analytic techniques include but are not restricted to DNA sequencing, pyrosequencing, polymerase chain reaction (PCR), melting point assays, and immunohistochemistry
•Contrast-enhanced computed tomography (CT) scans of the neck, chest, abdomen and pelvis are required; a whole body positron emission tomography (PET)/CT scan with diagnostic quality images and intravenous iodinated contrast may be used in lieu of a contrast enhanced CT of the neck, chest, abdomen and pelvis; contrast may be omitted if the treating investigator believes that exposure to contrast poses an excessive risk to the patient; patients must have measurable disease per Response Evaluation Criteria in Solid Tumors (RECIST) 1.1; all measurable lesions must be assessed within 28 days prior to registration; tests to assess non-measurable disease must be performed within 42 days prior to registration; all disease must be assessed and documented on the Baseline Tumor Assessment Form (RECIST 1.1)
•Patients must not have received a prior BRAF or mitogen-activated protein kinase kinase (MEK) inhibitor
•Patients with a history of brain metastases are eligible if the patient is asymptomatic with no residual neurological dysfunction and has not received enzyme-reducing anti-epileptic drugs or corticosteroids for at least 7 days prior to registration.
•Patients must not have received any anti-cancer drug within 28 days prior to registration, and must not have received any nitrosoureas or mitomycin C within 42 days prior to registration
•Patients must not have received any major surgery or immunotherapy within 28 days prior to registration
•Patients must not have any unresolved toxicity greater than National Cancer Institute (NCI)-CTCAE version (v) 4.0 grade 1 from previous anti-cancer therapy except alopecia within 7 days prior to registration
•Patients with known history or current evidence of retinal vein occlusion (RVO) or central serous retinopathy (CSR) are not eligible.
•Patients must not have a history of pneumonitis or interstitial lung disease
•Patients must not have any grade II/III/IV cardiac disease as defined by the New York Heart Association criteria. Patients with a history of atrial fibrillation must have atrial fibrillation controlled for at least 30 days prior to registration
•Patients with known hepatitis B or hepatitis C are not eligible, regardless of concomitant antiretroviral therapy or current viral load
•No other prior malignancy is allowed except for the following: adequately treated basal cell or squamous cell skin cancer, in situ cervical cancer, adequately treated stage I or II cancer from which the patient is currently in complete remission, or any other cancer from which the patient has been disease free for three years; exception: patients with known history of colon cancer, cancer of the pancreas, or any cancer known to harbor an activating RAS mutation are ineligible regardless of stage or time since diagnosis
•Patients with cutaneous or superficial lesions that do not require imaging guidance for biopsy must be willing to undergo biopsies for tissue submission and blood draws for translational medicine
Phase II
Cutaneous (skin)
Gary Goodman, M.D.
SWOG (Southwest Oncology Group)
Chris Fountain

The Pacific Cancer Research Consortium clinical trials are offered at multiple locations throughout Oregon, Washington, Alaska, California, and Idaho. To find a location near you, please contact the Patient Engagement Center at 844-552-2734.