Figure 1. MTT assay showing differential response between parental and resistant NSCLC cell lines.

H2170 and H358 cells were treated with tivantinib (0.01–0.4 µM) for 24 hours, tivantinib was removed, and cells were incubated for 72 hours, after which MTT viability assay was performed. SR H2170 cells showed a 3.2-fold decrease in sensitivity to the anti-proliferative effect of tivantinib at 0.1 µM tivantinib compared with parental cells. A 3.7-fold decrease in growth inhibition was also observed in SR H358 cells with 0.2 µM tivantinib compared to parental cells. Data shown are representative of three independent experiments showing similar results (n = 6, p<0.01).