To examine the connection between miR-221-3p and LIFR, we utilized the starBase database and identified an inverse correlation between the expression of miR-221-3p and LIFR in breast invasive carcinoma (BRCA), stomach adenocarcinoma (STAD), and low-grade glioma (LGG) (Fig. 7B). This evidence concerns the gene LIFR and invasive breast carcinoma.