NECTIN3 and osteosarcoma: Lastly, we identified four lncRNAs (CTB-4E7.1, RP11-553A10.1, RP11-24N18.1, and PVRL3-AS1) according to p<0.05 and constructed a prognosis signature of osteosarcoma, based on the expression levels of these four lncRNAs.