In order to accurately evaluate the expression pattern of GPC-1 in different tumor tissues or cancer cell lines, we first analyzed the cBioPortal data to accurately assess GPC-1 mRNA levels GPC-1 among 21 types of tumor tissues and then explored the expression of GPC-1 in 33 cancers with the combination of normal tissue data from GTEx database and TCGA database. This evidence concerns the gene GPC1 and neoplasm.