We detected the expression of hsa_circ_0092856 and Eif3a in MCR-5, A549, H1299, and H226 cells through the RT-qPCR; the results showed that the expression of hsa_circ_0092856 and eIF3a in lung cancer cell lines A549, H1299, and H226 are significantly up-regulated compared with that in the normal human lung fibroblast cell line, MRC-5 (Figure 1C). Here, EIF3A is linked to lung cancer.