Studies conducted in breast cancer have shown that lncRNA BCRT1 acts as a molecular sponge of miR-1303, negatively regulates the expression of miR-1303, and upregulates the expression of PTBP3 via exocrine, which, in turn, promotes the development of breast cancer (Liang et al., 2020). This evidence concerns the gene PTBP3 and breast carcinoma.