Breast cancer cTF by clinical stage and relation to WGBS classifier score.
(A) cTF by clinical stage for breast cancer. (B) WGBS classifier score  by cTF for breast cancer. Samples are colored by clinical stage and samples with imputed cTF are shown as triangles. cTF: Circulating Tumor fraction, WGBS: Whole-genome bisulfite sequencing. Non-informative: Confirmed invasive cancer with insufficient clinical information to determine stage.