For instance, aberrant expression of EP2 has been found to be associated with chronic inflammation, deregulation of the immune system, angiogenesis, metastasis as well as multidrug resistance and has been observed in cancer of the colon, liver, breast and cervix (Asting et al. 2017; Cui et al. 2017; Gong et al. 2017; Huynh 2017). The gene discussed is PTGER2; the disease is cancer.