Using an OvCa single cell database, of 84 ovarian tumour patients -primarily high-grade serous carcinoma (HGSC)- from 16 publicly available studies21we demonstrate that CIP2A is expressed in a wide range of cells i.e., T/B/mast/myeloid/ epithelial/endothelial cells, pericytes and fibroblasts (Figs. 1e-g). Here, CIP2A is linked to serous adenocarcinoma.