LGX818 and MEK162 in Combination With a Third Agent (BKM120, LEE011, BGJ398 or INC280) in Advanced BRAF Melanoma

This study consists of two parts: in Part I/Run-In, patients naïve to selective BRAF and MEK inhibitors will be treated with the LGX818/MEK162 combination until disease progression (as defined per RECIST v1.1). Based on the genetic analysis of a tumor biopsy obtained at that time, patients will enter Part II of the study for tailored combination treatment in one of four arms of LGX818/MEK162 + either BKM120, BGJ398, INC280 or LEE011 Patients with BRAF mutant melanoma treated by LGX818/MEK162 combination in other studies can be enrolled directly in Part II of CLGX818X2109 after relapse. Dose-escalations in the combination arms for which no MTD has been established will be based on the recommendations of a Bayesian logistic regression model guided by an escalation with overdose control criterion