It has been found that tRFs generated from tRNAGlu, tRNAAsp, tRNAGly, and tRNATyr could bind to YBX1 and displace YBX1 from the 3’-UTRs of oncogenic mRNAs, leading to their degradation and thus suppressing breast cancer metastasis [20]. This evidence concerns the gene YBX1 and breast cancer.