Study Comparing Combination of LGX818 Plus MEK162 Versus Vemurafenib and LGX818 Monotherapy in BRAF Mutant Melanoma


About this study

This is 2-part, randomized, open label, multi-center, parallel group, phase III study comparing the efficacy and safety of LGX818 plus MEK162 to vemurafenib and LGX818 monotherapy in patients with locally advanced unresectable or metastatic melanoma with BRAF V600 mutation. A total of approximately 900 patients will be randomized. Part 1: Patients will be randomized in a 1:1:1 ratio to one of 3 treatment arms 1. LGX818 450mg QD plus MEK162 45mg BID (denoted as Combo 450 arm) 2. LGX818 300mg QD monotherapy (denoted as LGX818 arm) or 3. vemurafenib 960mg BID (denoted as vemurafenib arm) Part 2: Patients will be randomized in a 3:1 ratio to one of the 2 treatment arms:1. LGX818 300mg QD plus MEK162 45mg BID (denoted as Combo 300 arm) or 2. LGX818 300mg QD monotherapy (denoted as LGX818 arm).

Participation eligibility

Participant eligibility includes age, gender, type and stage of disease, and previous treatments or health concerns. Guidelines differ from study to study, and identify who can or cannot participate. There is no guarantee that every individual who qualifies and wants to participate in a trial will be enrolled. Contact the study team to discuss study eligibility and potential participation.

Inclusion Criteria:

  • Diagnosis of locally advanced, unresectable or metastatic cutaneous melanoma or unknown primary melanoma (AJCC Stage IIIB, IIIC, or IV)
  • Presence of BRAF V600E or V600K mutation in tumor tissue prior to randomization
  • Naïve untreated patients or patients who have progressed on or after prior first line immunotherapy for resectable locally advanced or metastatic melanoma; prior adjuvant therapy is permitted (e.g. IFN, IL-2 therapy, any other immunotherapy, radiotherapy or chemotherapy), except the administration of BRAF or MEK inhibitors
  • Evidence of at least one measurable lesion as detected by radiological or photographic methods
  • ECOG performance status of 0 or 1
  • Adequate bone marrow, organ function, cardiac and laboratory parameters
  • Normal functioning of daily living activities

Exclusion Criteria:

  • Any untreated central nervous system (CNS) lesion
  • Uveal and mucosal melanoma
  • History of leptomeningeal metastases
  • History of or current evidence of central serous retinopathy (CSR), retinal vein occlusion (RVO) or history of retinal degenerative disease.
  • Any previous systemic chemotherapy treatment, extensive radiotherapy or investigational agent other than immunotherapy, or patients who have received more than one line of immunotherapy for locally advanced unresectable or metastatic melanoma; Ipilimumab (adjuvant) or other immunotherapy treatment must have ended at least 6 weeks prior to randomization
  • History of Gilbert's syndrome
  • Prior therapy with a BRAF inhibitor and/or a MEK- inhibitor
  • Impaired cardiovascular function or clinically significant cardiovascular diseases
  • Uncontrolled arterial hypertension despite medical treatment
  • HIV positive or active Hepatitis B, and/or active Hepatitis C
  • Impairment of gastrointestinal function
  • Patients with neuromuscular disorders that are associated with elevated CK.
  • Pregnant or nursing (lactating) women
  • Medical, psychiatric, cognitive or other conditions that may compromise the patient's ability to understand the patient information, give informed consent, comply with the study protocol or complete the study

Other protocol-defined inclusion/exclusion criteria may apply

Participating Mayo Clinic locations

Study statuses change often. Please contact the study team for the most up-to-date information regarding possible participation.

Mayo Clinic Location Status Contact

Rochester, Minn.

Mayo Clinic principal investigator

Svetomir Markovic, M.D., Ph.D.

Closed for enrollment

Contact information:

Cancer Center Clinical Trials Referral Office


More information


Publications are currently not available

Mayo Clinic Footer