...examined two BRAF-mutant melanoma cell lines with endogenous MEK1P124Q (SMU030P) and MEK1P124L (D28; ref. 34) mutations... when compared with a small panel of BRAFV600/MEK1 wild-type melanoma cell lines, the SMU030P and D28 cell lines showed intermediate sensitivity to dabrafenib, but were exquisitely sensitive to the downstream MEK and ERK inhibitors, trametinib and VX-11e...