GLI1 and hereditary clear cell renal cell carcinoma: Moreover, the signal integration of non-canonical GLI1/2 activation by PI3K/AKT was also deciphered as a novel potential therapeutic target because combination of the GLI inhibitor GANT61 and the AKT inhibitor perifosine resulted in synergistically suppressed tumor growth and induced apoptosis in renal cell carcinoma models [73].