CDK18 and breast cancer: We thank Alyson Evans and Maggie Glover for technical assistance with preparation and optimisation of immunohistochemical staining of cell-based FFPE blocks and commercial breast cancer TMAs, Dr. Dominic Byrne and Prof. Patrick Eyers for assistance with in vitro biochemical assays and Prof. Angela Cox for help with the statistical analyses of CDK18 expression scoring in these samples.