According to our results, the in silico analysis of FENDRR and FOXF1 expression from Cancer Cell Line Encyclopedia (CCLE) database [15] showed a significant positive correlation between FENDRR and FOXF1 in 1036 cancer cell lines (p<0.001) (Supplementary Figure 2A), and in particular 116 NSCLC cancer cell lines (p<0.00001). The gene discussed is FOXF1; the disease is cancer.