In line with this, PI3K pathway activity was found to be associated with higher grade and worse prognosis in breast cancer, high grade serous ovarian cancer, prostate cancer, and esophageal cancer (Verhaegh et al., 2014; Creemers et al., 2018; van de Stolpe et al., 2019a; Sieuwerts et al., 2020; van Lieshout et al., 2020). The gene discussed is PIK3CA; the disease is ovarian serous adenocarcinoma.