Whole exome sequencing in triple negative breast cancer cases (n = 8) and targeted sequencing in healthy controls (n = 48) revealed BRIP1 rs552752779 (MAF: 75% vs. 6.25%, OR 45.00, 95% CI 9.43-243.32), ERBB2 rs527779103 (MAF: 62.5% vs. 7.29%, OR 21.19, 95% CI 5.11-94.32), ERCC2 rs121913016 (MAF: 56.25% vs. 7.29%, OR 16.34, 95% CI 4.02-70.41), MSH6 rs2020912 (MAF: 56.25% vs. 1.04%, OR 122.13, 95% CI 12.29-2985.48) as risk factors for triple negative breast cancer.
Three PDXs were selected for their lack of PTEN expression by immunohistochemistry: a triple-negative breast cancer (TNBC), a <i>KRAS</i> G12R low-grade serous ovarian cancer (LGSOC), and <i>KRAS</i> G12C and <i>TP53</i> R181P lung adenocarcinoma (LADC).