Supplementary Figure S1. IGV visualization for whole exome sequencing of codon Q61 of NRAS in the pre-treatment tumor vs. the relapsed tumor in patient 1. The red color indicates the A>G for the p.Q61R mutation in the tumor. Supplementary Figure S2. A. IGV visualization for the targeted sequencing of BRAF and PI3KCA in patient 6. B. IGV visualization for the targeted sequencing of BRAF and NRAS in patient 7. Supplementary Figure S3. Response of patient 5 PDX to PLX4720.