TP53 and ovarian cancer: The detectability of TP53 clonal variants in Papanicolaou test samples taken at the time of ovarian cancer diagnosis has been shown previously.5,6,7 A 2019 study by Arildsen et al13 reported that TP53 variants detected by ddPCR were found in 7 diagnostic liquid-based Papanicolaou tests from 15 HGS-EOCs.