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Epigenetics in Gastrointestinal Stromal Tumors: Clinical Implications and Potential Therapeutic Perspectives

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Abstract

Gastrointestinal stromal tumors (GIST) represent the most common mesenchymal neoplasms affecting the gastrointestinal tract. Activating mutations in either the KIT or PDGFRa gene are the principal oncogenic triggers with the former accounting for more than 80 % of cases. In the small subset of GIST that are wild type for both the aforementioned changes, other germline or somatic mutations have been identified. GIST exhibit a highly variable clinical behavior and the main prognostic determinants are tumor size, mitotic rate, and location. It is, however, strongly believed that, beyond classic genetics, additional epigenetic phenomena such as DNA hypomethylation and hypermethylation, microRNA alterations, and chromatin modifications underlie GIST tumorigenesis and influence the clinical course and response to standard treatment. This review aims to illuminate current advances in terms of epigenetics in GIST, as well as possible implications in prognosis and therapeutics.

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Authors and Affiliations

  1. 2nd Department of Internal Medicine and Research Unit, Attikon University General Hospital, Medical School, Athens University, Rimini 1, 12462, Haidari, Greece

    Athanasios D. Sioulas, Diamantina Vasilatou, Vasiliki Pappa, George Dimitriadis & Konstantinos Triantafyllou

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  1. Athanasios D. Sioulas
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  2. Diamantina Vasilatou
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  3. Vasiliki Pappa
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  4. George Dimitriadis
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  5. Konstantinos Triantafyllou
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Correspondence to Athanasios D. Sioulas.

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Sioulas, A.D., Vasilatou, D., Pappa, V. et al. Epigenetics in Gastrointestinal Stromal Tumors: Clinical Implications and Potential Therapeutic Perspectives. Dig Dis Sci 58, 3094–3102 (2013). https://doi.org/10.1007/s10620-013-2785-8

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  • DOI: https://doi.org/10.1007/s10620-013-2785-8

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