The tumor cells grew adherently in vitro. We performed molecular profiling (exome and transcriptome sequencing) of the cells in culture at passage 15, and found them to continue to display the key somatic events seen in the original human tumor, including amplification and outlier expression of PDGFRA and FGF2 (among others) (Figure 4C–4D). Here, PDGFRA is linked to neoplasm.