A. Cells derived from tumours arising in Rosa26_Alkal2;Th-MYCN (#4953) and Alk-F1178S;Th-MYCN (#4938) mice are sensitive to both lorlatinib and brigatinib. The effect of increasing concentrations of each ALK TKI (as indicated) on cell confluence was analyzed by IncuCyte Live Cell Analysis. Data is presented as mean ± SEM from three independent experiments. *p<0.05, **p<0.005; two-tailed paired student t-test. 