Estrogen receptor beta expression and prognosis of diffuse large B cell lymphoma

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Abstract

Objectives: Estrogen receptor beta (ERβ)-selective agonists inhibited B cell lymphoma growth in animal models. However, a recent study found that higher ERβ expression in tissue from diffuse large B cell lymphoma (DLBCL) patients indicated a poorer survival. This study aimed to determine the ERβ expression in DLBCL tissue using immunohistochemistry and correlate with clinical outcomes. Methods: Diagnostic tissues from newly diagnosed adult DLBCL patients treated with Rituximab-Cyclophosphamide/Doxorubicin/Vincristine/Prednisolone were counted for ERβ1-expressing cells. Nodal lymphoma (N = 41) was analyzed separately from extra-nodal DLBCL (N = 31). Results: On immunohistochemistry, ERβ1 was expressed in 73.6% of cases with the median expressing cells of 20%. For nodal lymphoma, high ERβ expression (≥25%) was associated with poorer event free survival (EFS) independent of the international prognostic index with the adjusted hazard ratio (HR) of 2.49 (95% Confidence interval (CI) 1.03–6.00, P = 0.042). On the contrary, high ERβ expression (≥25%) was associated with superior outcomes in extra-nodal DLBCL with the adjusted HR of 0.25 (95% CI 0.09–0.75, P = 0.013) for EFS and adjusted HR of 0.29 (95% CI 0.10–0.85, P = 0.024) for overall survival in multivariate analyses. Conclusion: ERβ1 protein expression represented opposite prognostic factors in nodal vs. extra-nodal DLBCL.

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Faknuam, S., Assanasen, T., Ruangvejvorachai, P., Hanvivadhanakul, P., Intragumtornchai, T., & Rojnuckarin, P. (2018). Estrogen receptor beta expression and prognosis of diffuse large B cell lymphoma. Hematology, 23(4), 235–241. https://doi.org/10.1080/10245332.2017.1389508

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