Journal of Pathology and Translational Medicine

Sang Yoon Kim¹

1 Article

Mdm2 and p53 Expression in Radiation-Induced Sarcomas of the Head and Neck: Comparison with De Novo Sarcomas: Min Jeong Song, Joon Seon Song, Jong-Lyel Roh, Seung-Ho Choi, Soon Yuhl Nam, Sang Yoon Kim, Sung Bae Kim, Sang-wook Lee, Kyung-Ja Cho; Korean J Pathol. 2014;48(5):346-350. Published online October 27, 2014; DOI: https://doi.org/10.4132/KoreanJPathol.2014.48.5.346

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Background: The pathogenesis of radiation-induced sarcomas (RISs) is not well known. In RIS, TP53 mutations are frequent, but little is known about Mdm2-p53 interaction, which is a recent therapeutic target of sarcomas. Methods: We studied the immunohistochemical expression of Mdm2 and p53 of 8 RISs. The intervals between radiation therapy and diagnosis of secondary sarcomas ranged from 3 to 17 years. Results: Mdm2 expression was more common in de novo sarcomas than RISs (75% vs 37.5%), and p53 expression was more common in RISs than in de novo cases (75% vs 37.5%). While half of the RISs were Mdm2(–)/p53(+), none of de novo cases showed such combination; while half of de novo sarcomas were Mdm2(+)/p53(–), which are a candidate group of Mdm2 inhibitors, only 1 RIS showed such a combination. Variable immunoprofiles observed in both groups did not correlate with tumor types, except that all of 2 myxofibrosarcomas were Mdm2(+)/p53(+). Conclusions: In conclusion, we speculated that both radiation- induced and de novo sarcomagenesis are not due to a unique genetic mechanism. Mdm2- expression without p53 overexpression in 1 case of RIS decreases the future possibility of applying Mdm2 inhibitors on a subset of these difficult tumors.

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Radiation-Induced Sarcomas of the Head and Neck: A Systematic Review
Andrés Coca-Pelaz, Antti A. Mäkitie, Primož Strojan, June Corry, Avraham Eisbruch, Jonathan J. Beitler, Sandra Nuyts, Robert Smee, Johannes A. Langendijk, William M. Mendenhall, Cesare Piazza, Alessandra Rinaldo, Alfio Ferlito
Advances in Therapy.2021; 38(1): 90. CrossRef
Genomic Characterization of Radiation-Induced Intracranial Undifferentiated Pleomorphic Sarcoma
Christopher S. Hong, Edwin Partovi, James Clune, Anita Huttner, Henry S. Park, Sacit Bulent Omay, Balraj Mittal
Case Reports in Genetics.2021; 2021: 1. CrossRef
Radiation-Induced Sarcoma of the Head and Neck: A Review of the Literature
Lorenzo Giannini, Fabiola Incandela, Marco Fiore, Alessandro Gronchi, Silvia Stacchiotti, Claudia Sangalli, Cesare Piazza
Frontiers in Oncology.2018;[Epub] CrossRef

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