Zhao et al. suggest that Cdr1as is decreased in serum exosomes of ovarian cancer patients and downregulation of Cdr1as promotes miR‐1270/SCAI (suppressor of cancer cell invasion) axis, leading to cisplatin resistance.[146] Hypoxia profoundly contributes to chemoresistance of prostate cancer. This evidence concerns the gene LINC00632 and prostate carcinoma.