VDR and squamous cell carcinoma: It should be noticed that a study performed in SCC (Squamous Cell Carcinoma) and aimed at determining the nuclear receptors, which are involved in the regulation of CAF functionality, resulted in the identification of RARβ, PPARβ-δ, VDR (Vitamin D Receptor), GR (Glucocorticoid Receptor) and AR (Androgen Receptor) as key players in the attenuation of the invasiveness, proliferation, drug resistance, energy metabolism and oxidative stress observed in the neoplastic cell.