A study of histological grading on bone and soft tissue tumors by analysis of ATBF1

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ATBF1(AT-motif binding factor 1) was discovered as a transcriptional regulator of α-fetoprotein. Thereafter, ATBF1 had a regulatory mechanism of a neuronal and skeletal muscular differentiation, and was a homeotic transcriptional regulatory factor identified as a tumor suppressor gene. We analyzed an immunohistochemical expression and function of ATBF1 on bone and soft tissue tumors. As a result, nuclear staining was observed in most cases of benign or low grade malignant tumor groups, however, in high grade malignant tumor group, one case showed nuclear positivity. Comparing nuclear staining negative group with nuclear staining positive group, we can imply that ATBF1 expression may have potential as a prognostic indicator for bone and soft tissue tumors.