...four NSCLC (H1299, A549, H460, H1975) cell lines with different mutation profiles in KRAS, NRAS, BRAF, PI3KCA and EGFR genes….two cancer cell lines that have a KRAS mutation (LOVO) or a NRAS (H1299) were the most sensitive to MEK inhibition, whereas H1975 and HCT15 that have PI3KCA mutations were the more resistant cells to pimasertib.