Figure 2. Expression profiles of GLI1, GLI2, and GLI3. Expression levels of GLI1, GLI2, and GLI3 in normal tissues (A–C), tumor cell lines (D–F), and tumor tissues (G–I) using data from the GTEx database. Combined TCGA and GTEx data of GLI1 (J), GLI2 (K), and GLI3 (L) expression differences between tumor and normal tissues (*p < 0.05, **p < 0.01, and ***p < 0.001; Abbreviation: ns: no significance). Differential expression of GLI1 (M), GLI2 (N), and GLI3 (O) between paired tumors and normal tissues using data from the TGGA database (*p < 0.05, **p < 0.01, and ***p < 0.001; Abbreviation: ns: no significance).