STIP1 and central nervous system cancer: STIP1 is overexpressed at both mRNA and protein levels in OSCC samples compared with normal tissues, similar as, for example, in gliomas (13), colorectal cancers (15), hepatocellular carcinoma (18), gastric cancers (20), cervical carcinomas (21), lung cancers (23), pancreatic cancers (36) and breast cancers (37).