- Special AT-rich sequence-binding protein 2 (SATB2) in the differential diagnosis of osteogenic and non-osteogenic bone and soft tissue tumors
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Sharon Milton, Anne Jennifer Prabhu, V. T. K. Titus, Rikki John, Selvamani Backianathan, Vrisha Madhuri
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J Pathol Transl Med. 2022;56(5):270-280. Published online September 13, 2022
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DOI: https://doi.org/10.4132/jptm.2022.07.11
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 Abstract
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- Background
The diagnosis of osteosarcoma (OSA) depends on clinicopathological and radiological correlation. A biopsy is considered the gold standard for OSA diagnosis. However, since OSA is a great histological mimicker, diagnostic challenges exist. Immunohistochemistry (IHC) can serve as an adjunct for the histological diagnosis of OSA. Special AT-rich sequence-binding protein 2 (SATB2) was recently described as a reliable adjunct immunohistochemical marker for the diagnosis of OSA.
Methods
We investigated the IHC expression of SATB2 in 95 OSA and 100 non-osteogenic bone and soft tissue tumors using a monoclonal antibody (clone EPNCIR30A). The diagnostic utility of SATB2 and correlation with clinicopathological parameters were analyzed.
Results
SATB2 IHC was positive in 88 out of 95 cases (92.6%) of OSA and 50 out of 100 cases (50.0%) of primary non-osteogenic bone and soft tissue tumors. Of the 59 bone tumors, 37 cases (62.7%) were positive for SATB2, and of the 41 soft tissue tumors, 13 cases (31.7%) were positive for SATB2. The sensitivity of SATB2 as a diagnostic test was 92.6%, specificity 50%, positive predictive value 63.8%, and negative predictive value 87.7%.
Conclusions
Although SATB2 is a useful diagnostic marker for OSA, other clinical, histological and immunohistochemical features should be considered for the interpretation of SATB2.
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Citations
Citations to this article as recorded by  - Immunohistochemical Characterization of Feline Giant Cell Tumor of Bone (GCTb): What We Know and What We Can Learn from the Human Counterpart
Ilaria Porcellato, Giuseppe Giglia, Leonardo Leonardi
Animals.2025; 15(5): 699. CrossRef - Favorable treatment response to high‐grade sarcoma in neurofibromatosis 1
Michelle H. Talukder, Mauli M. Patel, Tala Al‐Saghir, Ghadir K. Katato, Janet Poulik, William J. Powell, Alysia K. Kemp, Steven Miller, Danielle Bell, Jeffrey W. Taub
Pediatric Blood & Cancer.2023;[Epub] CrossRef
- Clinicopathological Study of 18 Cases of Inflammatory Myofibroblastic Tumors with Reference to ALK-1 Expression: 5-Year Experience in a Tertiary Care Center
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Ramesh Babu Telugu, Anne Jennifer Prabhu, Nobin Babu Kalappurayil, John Mathai, Birla Roy Gnanamuthu, Marie Therese Manipadam
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J Pathol Transl Med. 2017;51(3):255-263. Published online April 17, 2017
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DOI: https://doi.org/10.4132/jptm.2017.01.12
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12,524
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401
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23
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28
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Abstract
PDF
- Background
Inflammatory myofibroblastic tumor is a histopathologically distinctive neoplasm of children and young adults. According to World Health Organization (WHO) classification, inflammatory myofibroblastic tumor is an intermediate-grade tumor, with potential for recurrence and rare metastasis. There are no definite histopathologic, molecular, or cytogenetic features to predict malignant transformation, recurrence, or metastasis.
Methods
A 5-year retrospective study of histopathologically diagnosed inflammatory myofibroblastic tumors of various anatomic sites was conducted to correlate anaplastic lymphoma kinase-1 (ALK-1) expression with histological atypia, multicentric origin of tumor, recurrence, and metastasis. Clinical details of all the cases were noted from the clinical work station. Immunohistochemical stains for ALK-1 and other antibodies were performed. Statistical analysis was done using Fisher exact test.
Results
A total of 18 cases of inflammatory myofibroblastic tumors were found during the study period, of which 14 were classical. The female-male ratio was 1:1 and the mean age was 23.8 years. Histologically atypical (four cases) and multifocal tumors (three cases, multicentric in origin) were noted. Recurrence was noted in 30% of ALK-1 positive and 37.5% of ALK-1 negative cases, whereas metastasis to the lung, liver, and pelvic bone was noted in the ALK-1 positive group only.
Conclusions
Overall, ALK-1 protein was expressed in 55.6% of inflammatory myofibroblastic tumors. There was no statistically significant correlation between ALK-1 expression, tumor type, recurrence and metastasis. However, ALK-1 immunohistochemistry is a useful diagnostic aid in the appropriate clinical and histomorphologic context.
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Citations
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