PCAT1 and osteosarcoma: Previous studies only showed its impact on osteosarcoma, in which PCAT1 was up‐regulated and promoted osteosarcoma tumourigenicity.12, 13 Here, we found that PCAT1 positively regulated the osteogenic differentiation of hADSCs, suggesting that PCAT1 might be an important target lncRNA for ASC‐based therapies related to osteogenic differentiation.