A recent study showed that blocking phagocytic clearance of apoptotic cells increased the release of cyclic GMP‐AMP (cGAMP) from dying tumor cells and induced a stimulator of interferon genes (STING)‐dependent type I IFN response.[29] We investigated whether defects in efferocytosis activity in NAMPT‐deficient TAMs could regulate cyclic GMP‐AMP synthase (cGAS)‐STING signaling. This evidence concerns the gene CGAS and neoplasm.