In Burkitts lymphoma , translocation seen is chromosome –

Okay, let's tackle this question about Burkitt's lymphoma and the chromosomal translocation involved. The user provided the correct answer as 8:14, 8:22, or 8:2. First, I need to recall the core concept here. Burkitt's lymphoma is a type of non-Hodgkin lymphoma and is associated with a specific chromosomal translocation. The key here is the c-MYC gene located on chromosome 8. The translocation typically involves chromosome 8 with either 14, 22, or 2.

For the correct answer explanation, I should explain that the translocation t(8;14)(q24;q32) is the classic one, placing the c-MYC gene under the control of the immunoglobulin heavy chain (IgH) promoter on chromosome 14. This leads to overexpression of c-MYC, which is oncogenic. The other translocations, like t(8;22) or t(8;2), involve the Ig light chain promoters, but they are less common.

Now, the incorrect options. Let's say the options were A. 8:14, B. 14:18, C. 9:22, D. 15:17. Option B is the translocation for follicular lymphoma (BCL2 with IgH), C is the Philadelphia chromosome in CML/ALL, and D is for APL (PML-RARA). Each of these are classic translocations for different lymphomas/leukemias.

The clinical pearl should highlight that the c-MYC translocation is a hallmark of Burkitt's, and that the presence of this translocation, along with other markers like EBV in endemic cases, is diagnostic. Also, the high proliferation rate from c-MYC overexpression makes it aggressive but responsive to intensive chemo.

I need to structure this into the required sections, making sure each part is concise and fits within the character limit. Use bold for key terms, and check that each section is properly addressed. Also, ensure that the explanation is detailed enough for a postgraduate student but not too verbose. Let me put this all together now.

**Core Concept**
Burkitt lymphoma is characterized by a chromosomal translocation involving the **c-MYC proto-oncogene** on chromosome 8 and an immunoglobulin locus. This translocation deregulates c-MYC expression, driving uncontrolled B-cell proliferation. The most common translocations are **t(8;14)(q24;q32)**, **t(8;22)(q24;q11)**, or **t(8;2)(q24;q11)**.

**Why the Correct Answer is Right**
The **t(8;14)** translocation is the classic and most frequent chromosomal abnormality in Burkitt lymphoma. It places the **c-MYC gene** on chromosome 8 under the control of the **immunoglobulin heavy chain (IgH) promoter** on chromosome 14. This leads to constitutive overexpression of c-MYC, which accelerates cell cycle progression and inhibits apoptosis, resulting in aggressive lymphoma. Less commonly, translocations with **Igκ (chromosome

✓ Correct Answer: B. 8 -14 translocation