Utilizing a lentiviral system, we stably overexpressed the most abundant isoform (Supplementary Figure 7) of lncTAM34a in three TP53-null cell lines, PC3 (prostate cancer), Saos2 (osteogenic sarcoma), and Skov3 (ovarian adenocarcinoma). The gene discussed is TP53; the disease is osteosarcoma.