Anatomic pathology selected abstracts
October 2023—Special AT-rich sequence-binding protein 2, or SATB2, induces local chromatin loops to facilitate transcription. SATB2 immunostaining is commonly used as a marker for colorectal adenocarcinoma and osteosarcoma. The authors conducted a study to better understand the prevalence and diagnostic value of SATB2 expression in cancer by analyzing a comprehensive set of human tumors. SATB2 expression was analyzed in 15,012 tissue samples from 120 tumor types and subtypes and 608 samples from 76 nonneoplastic tissue types using IHC in a tissue microarray format. SATB2 positivity was found in 89 of the 120 (74 percent) tumor types—59 of the 120 (49 percent) had at least one moderately positive tumor and 38 of the 120 (32 percent) had at least one strongly positive tumor.