Recently, a growing evidence suggested that PTGR1 plays a significant role in cancer progression (Xue et al., 2016), cancer prognosis (Győrffy et al., 2013), chemotherapeutic sensitivity (Dick et al., 2004) and cancer oxidative stress (Sánchez-Rodríguez et al., 2017). The gene discussed is PTGR1; the disease is cancer.