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Submitted: 06 Aug 2019
Accepted: 10 Dec 2019
ePublished: 25 Dec 2019
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Immunopathol Persa. 2020;6(1): e07.
doi: 10.15171/ipp.2020.07

Scopus ID: 85105075091
  Abstract View: 2544
  PDF Download: 920

Original Article

Prognostic significance evaluation of B-cell lymphoma 2 (BCL2) and Ki-67 expression in diffuse large B-cell lymphoma patients

Hossein Rahimi 1 ORCID logo, Zahra Rezaei Borojerdi 1* ORCID logo, Sajad Ataei Azimi 1* ORCID logo, Elnaz Rashidian 2 ORCID logo, Amirhossein Jafarian 3 ORCID logo

1 Devision of Hematology Oncology, Department of Internal Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
2 Division of Surgery, Department of Surgery, Mashhad University of Medical Sciences, Mashhad, Iran
3 Molecular Pathology Research Center, Department of Pathology Faculty, Ghaem Hospital, Mashhad University of Medical Sciences, Mashhad, Iran
*Corresponding Authors: Email: Rezaeibz961@mums.ac.ir; Email: Ataei.s60@gmail.com

Abstract

Introduction: Diffuse large B-cell lymphoma (DLBCL) is the most common lymphatic neoplasm, accounting for about 30–40% of non-Hodgkin’s lymphoma cases. Objectives: DLBCL is a progressive disease with clinical, genetic and molecular heterogeneity. The prognostic value of B-cell lymphoma 2 (BCL2) and Ki-67 in DLBCL patients has been controversial.

Patients and Methods: In this study, we investigated the correlation of BCL2 and Ki-67 expression with clinical features such as age, gender, B symptoms and lactate dehydrogenase (LDH) levels, subtypes of DLBCL, its staging and prognosis in 36 cases of DLBCL. The expression of BCL2 and Ki-67 was measured by immunohistochemistry.

Results: There was no significant correlation between BCL2 expression and staging (P=0.082), however Ki-67 expression had a significant correlation with staging (P=0.002). There was no statistically significant correlation between BCL2 and Ki-67 with prognosis of the disease. We found a significant correlation between the germinal center B-cell (GCB) and non- GCB subtypes with BCL2 expression (P=0.024), since patients with non- GCB subtype had a higher BCL2 expression. Our study also demonstrated a significant relationship between BCL2 and Ki-67 expression, therefore, with the increase of the expression of a marker, another increases (P=0.045).

Conclusion: BCL2 and Ki-67 expressions were not associated with prognosis. Overexpression of Ki-67 was associated with higher clinical stages. BCL2 expression is higher in non-GCB subtype of DLBCL. Therefore, our study shows that the subsequent studies of BCL2 and other biomarkers in the DLBCL should be based on the DLBCL subtypes. 


Citation: Rahimi H, Rezaei Borojerdi Z, Ataei Azimi S, Rashidian E, Jafarian A. Prognostic significance evaluation of B-cell lymphoma 2 (BCL2) and Ki-67 expression in diffuse large B-cell lymphoma patients. Immunopathol Persa. 2020;6(1):e07. DOI:10.15171/ ipp.2020.07.
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