Immunohistochemical Expression of CD10, BCL6 and MUM1 in Differentiating Diffuse Large B Cell Lymphoma Subtypes

Akhter Ali Bajwa1, Muhammad Tahir Khadim1, Hafeez Ud Din2

  • 1Department of Pathology, Combined Military Hospital, Multan.

Insights

Immunohistochemical markers CD10, BCL6, and MUM1 help differentiate diffuse large B cell lymphoma (DLBCL) subtypes. The Pakistani population shows a high frequency of the non-GCB type, indicating a potential high-risk subset.

Area of Science:

  • Hematopathology
  • Oncology
  • Immunohistochemistry

Background:

  • Diffuse large B cell lymphoma (DLBCL) is a heterogeneous group of lymphoid malignancies.
  • Accurate subtyping of DLBCL is crucial for prognostication and treatment selection.
  • Immunohistochemistry (IHC) plays a vital role in classifying DLBCL subtypes.

Purpose of the Study:

  • To investigate the expression patterns of CD10, BCL6, and MUM1 in differentiating DLBCL subtypes.
  • To assess the utility of these markers in classifying Germinal Center B-cell (GCB) and non-GCB (activated) DLBCL.
  • To evaluate the frequency of these subtypes in a Pakistani population.

Main Methods:

  • A descriptive, cross-sectional study was conducted on 96 newly diagnosed DLBCL cases.
  • Immunohistochemical staining for CD10, BCL6, and MUM1 was performed.
  • DLBCL subtypes (GCB and non-GCB) were determined based on marker expression, and data were analyzed using SPSS.

Main Results:

  • Out of 96 patients, 37.5% were classified as GCB type (CD10+/BCL6+) and 62.5% as non-GCB type (MUM1+).
  • A statistically significant association was observed between the expression of CD10, BCL6, and MUM1 and DLBCL subtypes (p<0.001).
  • The study found a higher prevalence of the non-GCB type (62.5%) in the Pakistani population.

Conclusions:

  • The expression profile of CD10, BCL6, and MUM1 effectively differentiates DLBCL subtypes.
  • The high frequency of the non-GCB type in Pakistan suggests a distinct epidemiological characteristic.
  • This high-risk subset warrants further investigation for tailored diagnostic and management strategies.
Abstract