For instance, PCAT1, PVT1, and PCAT19 in prostate cancer, CUPID1 and CUPID2 in breast cancer, PTCSC2 and PTCSC3 in thyroid cancer, LINC00673 in pancreatic cancer, lncPSCA in gastric cancer, as well as LCETRL3 and LCETRL4 in non-small cell lung cancer, are implicated in malignant development. The gene discussed is PTCSC2; the disease is breast cancer.