CEACAM8 and lung adenocarcinoma: Carus et al. reported the density of CD66b + neutrophils has no significant correlation with RFS or OS in non-small cell lung cancer (Carus et al., 2013), While Rakaee et al. noted that the density of CD66b + TANs to be an independent negative prognostic factor in patients with lung adenocarcinoma (Rakaee et al., 2016).