We also measured the transcriptional and translational levels of YBX1 in MIR155HG-knockdown or MIR155HG-overexpressing lung cancer cells, and no significant changes in the mRNA levels of YBX1 were observed when compared to the corresponding controls (Fig. S3E), while the protein levels of YBX1 were significantly decreased in MIR155HG-knockdown cells and increased in MIR155HG-overexpressing cells (Figs. 4F and S3F). This evidence concerns the gene YBX1 and lung cancer.