Strong kdm4b and kdm4d expression associates with radioresistance and aggressive phenotype in classical hodgkin lymphoma

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Abstract

Background: Epigenetic regulators, including Jumonji domain 2 (JMJD2/KDM4) proteins are involved in post-translational modification of histone demethylation and have a major role in carcinogenesis of many solid tumors. Materials and Methods: We assessed immunohistochemically the expression of lysine (K)-specific demethylase 4 (KDM4)A, KDM4B and KDM4D in tumors from 91 patients of adriamycin, bleomycin, vinblastine, darcabazine (ABVD)-treated classical Hodgkin lymphoma. Results: Strong cytoplasmic KDM4B expression in the reactive cellular infiltrate and also in Reed-Sternberg (RS) cells predicted poor relapse-free survival (RFS) (p=0.020 and p=0.022, respectively) in patients with limited-stage disease. Strong KDM4B expression in RS cells was also related to Bsymptoms (p=0.007) and advanced stage (p=0.024). Strong KDM4D expression in the cytoplasm of RS cells was also associated with poor RFS in limited-stage patients RFS (p=0.043) and, most significantly, in patients receiving involved-field radiotherapy (p=0.007). Conclusion: KDM4B and KDM4D expression may associate with an aggressive subtype of classical Hodgkin lymphoma and be linked with radioresistance.

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Bur, H., Haapasaari, K. M., Turpeenniemi-Hujanen, T., Kuittinen, O., Auvinen, P., Marin, K., … Karihtala, P. (2016). Strong kdm4b and kdm4d expression associates with radioresistance and aggressive phenotype in classical hodgkin lymphoma. Anticancer Research, 36(9), 4677–4684. https://doi.org/10.21873/anticanres.11020

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