BRAFi-resistant M238R cells overexpressing FSCN1 were obtained after transduction with a FSCN1 lentiviral construct. M238R transduced with a Ctrl lentivirus were used as control. (H) Crystal violet viability assay of M238R cells stably overexpressing FSCN1 during 6 days with the indicated doses of the BRAFi Vemurafenib. Data is represented as mean ± SD from a triplicate representative of at least 3 independent experiments. Paired Student t-test was used for statistical analysis. ****P≤0.0001. 