Many studies have revealed that lncRNAs, such as lncRNA ARSR, lncRNA UCA1, and lncRNA TUC339, are the important RNA cargoes of tumor exosomes, and these lncRNAs mediate the role of exosomes in regulating drug resistance, tumor growth, and macrophage activation in many cancers29–31. Here, UCA1 is linked to neoplasm.