PRC1 and skin squamous cell carcinoma: The relationship between expression of PRC1 gene and the prognosis of CSCC was retrieved from the TCGA database (http://ualcan.path.uab.edu/cgi-bin/ualcan-res.pl), the results of which found that the expression of PRC1 was related to the prognosis of CSCC patients (p < 0.05; Figure 1B).