Figure 3.
(A) Relative changes in mutant allele fractions for various oncogenes implicated in MAPK signaling (red) pre-treatment and post-progression, with superimposed BRAFV600E cfDNA allele fraction (black). (B) Median nuclear: cytoplasmic ratios for ERK2 and FOXO3a as surrogate measures of MAPK and PI3K/Akt signaling for variants detected in plasma samples from patients at progression. Decreasing nuclear:cytoplasmic ratio for ERK2 and FOXO3a represents decreasing MAPK and increasing PI3K/Akt signaling, respectively.