FOXD1 and lip and oral cavity carcinoma: Moreover, our data showed that the endogenous protein and mRNA levels of FOXD1 are causally associated with the cell viability and colony-forming ability detected after 24 h post-treatment with irradiation at 8 Gy in oral cancer cell lines HSC2, HSC3, HSC4 and SAS (Figure 3C–E and Figure S2A,B).