2016). These cancer‐promoting activities are mediated by the scaffold or the microtubule (MT)‐binding activity of CEP55 (Jeffery et al. 2016; Muhs et al. 2024). Interestingly, it has been shown that CEP55 can be transferred via exosomes, thereby increasing the malignancy of lung cancer cells. Also, CEP55 is suggested as a marker for cancer‐derived exosomes (Qadir et al. 2018; Liu et al. 2023). The gene discussed is CEP55; the disease is lung cancer.