It is noteworthy that PSAP expression has earlier been described to occur at relevant frequencies in various other tumor entities, including colorectal cancers, NSCLC cancers, ovarian cancers, pancreatic cancers, breast cancers, renal cancers, and carcinoid tumors of the gastrointestinal tract (studies summarized in Supplementary Figure S3). This evidence concerns the gene PSAP and breast carcinoma.