In 2019, Luo et al. found the differential expression of EXO1 in five prostate cancer cell lines, and the EXO1 expression in the other four high‐invasive/metastatic prostate cancer cell lines significantly increased compared with the low‐invasive/metastatic potential cell line LNCaP 53. The gene discussed is EXO1; the disease is metastatic prostate carcinoma.