A Study Comparing Trametinib and Dabrafenib Combination Therapy to Dabrafenib Monotherapy in Subjects With BRAF-mutant Melanoma

Status: Recruiting
Diagnosis: Cutaneous Skin Cancer
NCT ID: NCT01584648 (View complete trial on ClinicalTrials.gov)
DFCI Protocol ID: 12-277


This is a two-arm, double-blinded, randomized, Phase III study comparing dabrafenib (GSK2118436) and trametinib (GSK1120212) combination therapy to dabrafenib administered with a trametinib placebo (dabrafenib monotherapy). Subjects with histologically confirmed cutaneous melanoma that is either Stage IIIC (unresectable) or Stage IV, and BRAF V600E/K mutation positive will be screened for eligibility. Subjects who have had prior systemic anti-cancer treatment in the advanced or metastatic setting will not be eligible although prior systemic treatment in the adjuvant setting will be allowed. Approximately 340 subjects will be randomized 1:1 (combination therapy: dabrafenib monotherapy). Subjects will be stratified by lactate dehydrogenase (LDH) level (> the upper limit of normal (ULN) versus less than or equal to the ULN) and BRAF mutation (V600E versus V600K). The primary endpoint is investigator-assessed, progression-free survival for subjects receiving the combination therapy compared with those receiving dabrafenib monotherapy. Subjects will be followed for overall survival; crossover will not be permitted.


Conducting Institutions:
Massachusetts General Hospital, Dana-Farber Cancer Institute, Beth-Israel Deaconess Medical Center

Overall PI:
Keith Flaherty, MD, Massachusetts General Hospital

Site-responsible Investigators:
Nageatte Ibrahim, MD, Dana Farber Cancer Institute

Massachusetts General Hospital: Cancer Trials Call Center, 877-789-6100
Dana-Farber Cancer Institute: Suzanne MacRae, 617-632-5906, smacrae@partners.org

Eligibility Criteria

Inclusion Criteria: - Histologically confirmed cutaneous melanoma that is either Stage IIIC (unresectable) or Stage IV (metastatic), and determined to be BRAF V600E/K mutation-positive using the bioMerieux (bMx) investigational use only (IUO) THxID BRAF Assay (IDE: G120011). The assay will be conducted by a central reference laboratory. Subjects with ocular or mucosal melanoma are not eligible. - The subject must have a radiologically measurable tumor - The subject is able to carry out daily life activities without significant difficulty (ECOG performance status score of 0 or 1). - Able to swallow and retain oral medication - Sexually active subjects must use acceptable methods of contraception during the course of the study - Adequate organ system function and blood counts Exclusion Criteria: - Prior treatment with a BRAF or a MEK inhibitor - Prior systemic anti-cancer treatment for Stage IIIC (unresectable) or Stage IV (metastatic) melanoma. Prior systemic treatment in the adjuvant setting is allowed. (Note: Ipilimumab treatment must end at least 8 weeks prior to randomization.) - The subject has received major surgery or certain tyes of cancer therapy with 21 days of starting treatment - Current use of prohibited medication listed in the protocol - Left ventricular ejection fraction less than the lower limit of normal - Uncontrolled blood pressurl - History or current evidence of retinal vein occlusion or central serous retinopathy - Brain metastases unless previously treated with surgery or stereotactic radiosurgery and the disease has been stable for at least 12 weeks - The subject is pregnant or nursing
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