In addition, these genomic similarities were shared between other tumors, including high-grade serous ovarian carcinoma and basal-like breast cancers insofar as these cancers share a high frequency of mutations in TP53 (between 84 and 96 percent) and a low frequency in PTEN, with only 1 to 2 percent mutated. Here, PTEN is linked to ovarian serous carcinoma.