CCNE1-amplification, we tested Ovsaho cells (Supplementary Figure 1), which is a cell line showing the major genomic characteristics of HGSOC, and thus this cell line seems to be well suited as in vitro model for HGSOC [26]: This cell line has a TP53 mutation and its copy-number profile correlates well with the mean copy-number alterations of ovarian tumors. The gene discussed is CCNE1; the disease is ovarian neoplasm.