There is considerable evidence that p23 could be implicated in cancer processes as it has been shown to be up‐regulated in several tumour types, including lung, prostate and breast as well as acute lymphoblastic leukaemia (Elmore et al., 2008; Krebs et al., 2002; Li et al., 2009; Liu et al., 2012; Mollerup et al., 2003; Oxelmark et al., 2006; Reebye et al., 2012). Here, PTGES3 is linked to cancer.