What is the specific chromosomal translocation associated with Burkitt lymphoma?

What is the specific chromosomal translocation associated with Burkitt lymphoma?

• A. t(12;21)
• B. t(8;14)
• C. t(9;22)
• D. t(14;18)

Answer: (B)

The specific chromosomal translocation associated with Burkitt lymphoma is t(8;14). This translocation leads to the juxtaposition of the MYC oncogene, located on chromosome 8, with the immunoglobulin heavy chain locus located on chromosome 14. This genomic alteration causes the MYC gene to be overexpressed, promoting cell proliferation and contributing to the development of the aggressive B-cell malignancy characteristic of Burkitt lymphoma. The importance of this translocation lies in its role in the pathogenesis of the disease, which highlights how genetic abnormalities can lead to oncogenesis. The MYC protein is a transcription factor that, when overexpressed, drives the cell cycle and enhances cellular growth, leading to uncontrolled proliferation of B-lymphocytes. This is particularly relevant in pediatric cases, as Burkitt lymphoma most commonly occurs in children and presents with a rapidly growing mass, often in the jaw or abdominal area. Understanding this genetic basis is crucial for diagnosis and potential treatment strategies, as therapies may target genetic abnormalities such as those resulting from the t(8;14) translocation.

The specific chromosomal translocation associated with Burkitt lymphoma is t(8;14). This translocation leads to the juxtaposition of the MYC oncogene, located on chromosome 8, with the immunoglobulin heavy chain locus located on chromosome 14. This genomic alteration causes the MYC gene to be overexpressed, promoting cell proliferation and contributing to the development of the aggressive B-cell malignancy characteristic of Burkitt lymphoma.

The importance of this translocation lies in its role in the pathogenesis of the disease, which highlights how genetic abnormalities can lead to oncogenesis. The MYC protein is a transcription factor that, when overexpressed, drives the cell cycle and enhances cellular growth, leading to uncontrolled proliferation of B-lymphocytes. This is particularly relevant in pediatric cases, as Burkitt lymphoma most commonly occurs in children and presents with a rapidly growing mass, often in the jaw or abdominal area.

Understanding this genetic basis is crucial for diagnosis and potential treatment strategies, as therapies may target genetic abnormalities such as those resulting from the t(8;14) translocation.